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<H1>GNU Readline Library</H1></P><P>
This document describes the GNU Readline Library, a utility which aids
in the consistency of user interface across discrete programs which
provide a command line interface.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC1">1. Command Line Editing</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">GNU Readline User's Manual.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC23">2. Programming with GNU Readline</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">GNU Readline Programmer's Manual.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC49">A. GNU Free Documentation License</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">License for copying this manual.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC51">Concept Index</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Index of concepts described in this manual.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC52">Function and Variable Index</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Index of externally visible functions
and variables.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<HR SIZE=1>
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<A NAME="Command Line Editing"></A>
<H1> 1. Command Line Editing </H1>
<!--docid::SEC1::-->
<P>
This chapter describes the basic features of the GNU
command line editing interface.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC2">1.1 Introduction to Line Editing</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Notation used in this text.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC3">1.2 Readline Interaction</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">The minimum set of commands for editing a line.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC9">1.3 Readline Init File</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Customizing Readline from a user's view.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC13">1.4 Bindable Readline Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">A description of most of the Readline commands
available for binding</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC22">1.5 Readline vi Mode</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">A short description of how to make Readline
behave like the vi editor.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="Introduction and Notation"></A>
<HR SIZE="6">
<A NAME="SEC2"></A>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H2> 1.1 Introduction to Line Editing </H2>
<!--docid::SEC2::-->
<P>
The following paragraphs describe the notation used to represent
keystrokes.
</P><P>
The text <KBD>C-k</KBD> is read as `Control-K' and describes the character
produced when the <KBD>k</KBD> key is pressed while the Control key
is depressed.
</P><P>
The text <KBD>M-k</KBD> is read as `Meta-K' and describes the character
produced when the Meta key (if you have one) is depressed, and the <KBD>k</KBD>
key is pressed.
The Meta key is labeled <KBD>ALT</KBD> on many keyboards.
On keyboards with two keys labeled <KBD>ALT</KBD> (usually to either side of
the space bar), the <KBD>ALT</KBD> on the left side is generally set to
work as a Meta key.
The <KBD>ALT</KBD> key on the right may also be configured to work as a
Meta key or may be configured as some other modifier, such as a
Compose key for typing accented characters.
</P><P>
If you do not have a Meta or <KBD>ALT</KBD> key, or another key working as
a Meta key, the identical keystroke can be generated by typing <KBD>ESC</KBD>
<EM>first</EM>, and then typing <KBD>k</KBD>.
Either process is known as <EM>metafying</EM> the <KBD>k</KBD> key.
</P><P>
The text <KBD>M-C-k</KBD> is read as `Meta-Control-k' and describes the
character produced by <EM>metafying</EM> <KBD>C-k</KBD>.
</P><P>
In addition, several keys have their own names. Specifically,
<KBD>DEL</KBD>, <KBD>ESC</KBD>, <KBD>LFD</KBD>, <KBD>SPC</KBD>, <KBD>RET</KBD>, and <KBD>TAB</KBD> all
stand for themselves when seen in this text, or in an init file
(see section <A HREF="readline.html#SEC9">1.3 Readline Init File</A>).
If your keyboard lacks a <KBD>LFD</KBD> key, typing <KBD>C-j</KBD> will
produce the desired character.
The <KBD>RET</KBD> key may be labeled <KBD>Return</KBD> or <KBD>Enter</KBD> on
some keyboards.
</P><P>
<A NAME="Readline Interaction"></A>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC51">Index</A>]</TD>
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H2> 1.2 Readline Interaction </H2>
<!--docid::SEC3::-->
<P>
Often during an interactive session you type in a long line of text,
only to notice that the first word on the line is misspelled. The
Readline library gives you a set of commands for manipulating the text
as you type it in, allowing you to just fix your typo, and not forcing
you to retype the majority of the line. Using these editing commands,
you move the cursor to the place that needs correction, and delete or
insert the text of the corrections. Then, when you are satisfied with
the line, you simply press <KBD>RET</KBD>. You do not have to be at the
end of the line to press <KBD>RET</KBD>; the entire line is accepted
regardless of the location of the cursor within the line.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC4">1.2.1 Readline Bare Essentials</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">The least you need to know about Readline.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC5">1.2.2 Readline Movement Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Moving about the input line.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC6">1.2.3 Readline Killing Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">How to delete text, and how to get it back!</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC7">1.2.4 Readline Arguments</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Giving numeric arguments to commands.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC8">1.2.5 Searching for Commands in the History</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Searching through previous lines.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="Readline Bare Essentials"></A>
<HR SIZE="6">
<A NAME="SEC4"></A>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_Contents">Contents</A>]</TD>
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC51">Index</A>]</TD>
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H3> 1.2.1 Readline Bare Essentials </H3>
<!--docid::SEC4::-->
<P>
In order to enter characters into the line, simply type them. The typed
character appears where the cursor was, and then the cursor moves one
space to the right. If you mistype a character, you can use your
erase character to back up and delete the mistyped character.
</P><P>
Sometimes you may mistype a character, and
not notice the error until you have typed several other characters. In
that case, you can type <KBD>C-b</KBD> to move the cursor to the left, and then
correct your mistake. Afterwards, you can move the cursor to the right
with <KBD>C-f</KBD>.
</P><P>
When you add text in the middle of a line, you will notice that characters
to the right of the cursor are `pushed over' to make room for the text
that you have inserted. Likewise, when you delete text behind the cursor,
characters to the right of the cursor are `pulled back' to fill in the
blank space created by the removal of the text. A list of the bare
essentials for editing the text of an input line follows.
</P><P>
<DL COMPACT>
<DT><KBD>C-b</KBD>
<DD>Move back one character.
<DT><KBD>C-f</KBD>
<DD>Move forward one character.
<DT><KBD>DEL</KBD> or <KBD>Backspace</KBD>
<DD>Delete the character to the left of the cursor.
<DT><KBD>C-d</KBD>
<DD>Delete the character underneath the cursor.
<DT>Printing characters
<DD>Insert the character into the line at the cursor.
<DT><KBD>C-_</KBD> or <KBD>C-x C-u</KBD>
<DD>Undo the last editing command. You can undo all the way back to an
empty line.
</DL>
<P>
(Depending on your configuration, the <KBD>Backspace</KBD> key be set to
delete the character to the left of the cursor and the <KBD>DEL</KBD> key set
to delete the character underneath the cursor, like <KBD>C-d</KBD>, rather
than the character to the left of the cursor.)
</P><P>
<A NAME="Readline Movement Commands"></A>
<HR SIZE="6">
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H3> 1.2.2 Readline Movement Commands </H3>
<!--docid::SEC5::-->
<P>
The above table describes the most basic keystrokes that you need
in order to do editing of the input line. For your convenience, many
other commands have been added in addition to <KBD>C-b</KBD>, <KBD>C-f</KBD>,
<KBD>C-d</KBD>, and <KBD>DEL</KBD>. Here are some commands for moving more rapidly
about the line.
</P><P>
<DL COMPACT>
<DT><KBD>C-a</KBD>
<DD>Move to the start of the line.
<DT><KBD>C-e</KBD>
<DD>Move to the end of the line.
<DT><KBD>M-f</KBD>
<DD>Move forward a word, where a word is composed of letters and digits.
<DT><KBD>M-b</KBD>
<DD>Move backward a word.
<DT><KBD>C-l</KBD>
<DD>Clear the screen, reprinting the current line at the top.
</DL>
<P>
Notice how <KBD>C-f</KBD> moves forward a character, while <KBD>M-f</KBD> moves
forward a word. It is a loose convention that control keystrokes
operate on characters while meta keystrokes operate on words.
</P><P>
<A NAME="Readline Killing Commands"></A>
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<H3> 1.2.3 Readline Killing Commands </H3>
<!--docid::SEC6::-->
<P>
<A NAME="IDX1"></A>
<A NAME="IDX2"></A>
</P><P>
<EM>Killing</EM> text means to delete the text from the line, but to save
it away for later use, usually by <EM>yanking</EM> (re-inserting)
it back into the line.
(`Cut' and `paste' are more recent jargon for `kill' and `yank'.)
</P><P>
If the description for a command says that it `kills' text, then you can
be sure that you can get the text back in a different (or the same)
place later.
</P><P>
When you use a kill command, the text is saved in a <EM>kill-ring</EM>.
Any number of consecutive kills save all of the killed text together, so
that when you yank it back, you get it all. The kill
ring is not line specific; the text that you killed on a previously
typed line is available to be yanked back later, when you are typing
another line.
<A NAME="IDX3"></A>
</P><P>
Here is the list of commands for killing text.
</P><P>
<DL COMPACT>
<DT><KBD>C-k</KBD>
<DD>Kill the text from the current cursor position to the end of the line.
<P>
<DT><KBD>M-d</KBD>
<DD>Kill from the cursor to the end of the current word, or, if between
words, to the end of the next word.
Word boundaries are the same as those used by <KBD>M-f</KBD>.
<P>
<DT><KBD>M-<KBD>DEL</KBD></KBD>
<DD>Kill from the cursor the start of the current word, or, if between
words, to the start of the previous word.
Word boundaries are the same as those used by <KBD>M-b</KBD>.
<P>
<DT><KBD>C-w</KBD>
<DD>Kill from the cursor to the previous whitespace. This is different than
<KBD>M-<KBD>DEL</KBD></KBD> because the word boundaries differ.
<P>
</DL>
<P>
Here is how to <EM>yank</EM> the text back into the line. Yanking
means to copy the most-recently-killed text from the kill buffer.
</P><P>
<DL COMPACT>
<DT><KBD>C-y</KBD>
<DD>Yank the most recently killed text back into the buffer at the cursor.
<P>
<DT><KBD>M-y</KBD>
<DD>Rotate the kill-ring, and yank the new top. You can only do this if
the prior command is <KBD>C-y</KBD> or <KBD>M-y</KBD>.
</DL>
<P>
<A NAME="Readline Arguments"></A>
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<H3> 1.2.4 Readline Arguments </H3>
<!--docid::SEC7::-->
<P>
You can pass numeric arguments to Readline commands. Sometimes the
argument acts as a repeat count, other times it is the <I>sign</I> of the
argument that is significant. If you pass a negative argument to a
command which normally acts in a forward direction, that command will
act in a backward direction. For example, to kill text back to the
start of the line, you might type <SAMP>`M-- C-k'</SAMP>.
</P><P>
The general way to pass numeric arguments to a command is to type meta
digits before the command. If the first `digit' typed is a minus
sign (<SAMP>`-'</SAMP>), then the sign of the argument will be negative. Once
you have typed one meta digit to get the argument started, you can type
the remainder of the digits, and then the command. For example, to give
the <KBD>C-d</KBD> command an argument of 10, you could type <SAMP>`M-1 0 C-d'</SAMP>,
which will delete the next ten characters on the input line.
</P><P>
<A NAME="Searching"></A>
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</TR></TABLE>
<H3> 1.2.5 Searching for Commands in the History </H3>
<!--docid::SEC8::-->
<P>
Readline provides commands for searching through the command history
for lines containing a specified string.
There are two search modes: <EM>incremental</EM> and <EM>non-incremental</EM>.
</P><P>
Incremental searches begin before the user has finished typing the
search string.
As each character of the search string is typed, Readline displays
the next entry from the history matching the string typed so far.
An incremental search requires only as many characters as needed to
find the desired history entry.
To search backward in the history for a particular string, type
<KBD>C-r</KBD>. Typing <KBD>C-s</KBD> searches forward through the history.
The characters present in the value of the <CODE>isearch-terminators</CODE> variable
are used to terminate an incremental search.
If that variable has not been assigned a value, the <KBD>ESC</KBD> and
<KBD>C-J</KBD> characters will terminate an incremental search.
<KBD>C-g</KBD> will abort an incremental search and restore the original line.
When the search is terminated, the history entry containing the
search string becomes the current line.
</P><P>
To find other matching entries in the history list, type <KBD>C-r</KBD> or
<KBD>C-s</KBD> as appropriate.
This will search backward or forward in the history for the next
entry matching the search string typed so far.
Any other key sequence bound to a Readline command will terminate
the search and execute that command.
For instance, a <KBD>RET</KBD> will terminate the search and accept
the line, thereby executing the command from the history list.
A movement command will terminate the search, make the last line found
the current line, and begin editing.
</P><P>
Readline remembers the last incremental search string. If two
<KBD>C-r</KBD>s are typed without any intervening characters defining a new
search string, any remembered search string is used.
</P><P>
Non-incremental searches read the entire search string before starting
to search for matching history lines. The search string may be
typed by the user or be part of the contents of the current line.
</P><P>
<A NAME="Readline Init File"></A>
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<H2> 1.3 Readline Init File </H2>
<!--docid::SEC9::-->
<P>
Although the Readline library comes with a set of Emacs-like
keybindings installed by default, it is possible to use a different set
of keybindings.
Any user can customize programs that use Readline by putting
commands in an <EM>inputrc</EM> file, conventionally in his home directory.
The name of this
file is taken from the value of the environment variable <CODE>INPUTRC</CODE>. If
that variable is unset, the default is <TT>`~/.inputrc'</TT>. If that
file does not exist or cannot be read, the ultimate default is
<TT>`/etc/inputrc'</TT>.
</P><P>
When a program which uses the Readline library starts up, the
init file is read, and the key bindings are set.
</P><P>
In addition, the <CODE>C-x C-r</CODE> command re-reads this init file, thus
incorporating any changes that you might have made to it.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Syntax for the commands in the inputrc file.</TD></TR>
</TABLE>
<br>
<TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC11">1.3.2 Conditional Init Constructs</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Conditional key bindings in the inputrc file.</TD></TR>
</TABLE>
<br>
<TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC12">1.3.3 Sample Init File</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">An example inputrc file.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="Readline Init File Syntax"></A>
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<H3> 1.3.1 Readline Init File Syntax </H3>
<!--docid::SEC10::-->
<P>
There are only a few basic constructs allowed in the
Readline init file. Blank lines are ignored.
Lines beginning with a <SAMP>`#'</SAMP> are comments.
Lines beginning with a <SAMP>`$'</SAMP> indicate conditional
constructs (see section <A HREF="readline.html#SEC11">1.3.2 Conditional Init Constructs</A>). Other lines
denote variable settings and key bindings.
</P><P>
<DL COMPACT>
<DT>Variable Settings
<DD>You can modify the run-time behavior of Readline by
altering the values of variables in Readline
using the <CODE>set</CODE> command within the init file.
The syntax is simple:
<P>
<TABLE><tr><td> </td><td class=example><pre>set <VAR>variable</VAR> <VAR>value</VAR>
</pre></td></tr></table></P><P>
Here, for example, is how to
change from the default Emacs-like key binding to use
<CODE>vi</CODE> line editing commands:
</P><P>
<TABLE><tr><td> </td><td class=example><pre>set editing-mode vi
</pre></td></tr></table></P><P>
Variable names and values, where appropriate, are recognized without regard
to case. Unrecognized variable names are ignored.
</P><P>
Boolean variables (those that can be set to on or off) are set to on if
the value is null or empty, <VAR>on</VAR> (case-insensitive), or 1. Any other
value results in the variable being set to off.
</P><P>
A great deal of run-time behavior is changeable with the following
variables.
</P><P>
<A NAME="IDX4"></A>
<DL COMPACT>
<DT><CODE>bell-style</CODE>
<DD><A NAME="IDX5"></A>
Controls what happens when Readline wants to ring the terminal bell.
If set to <SAMP>`none'</SAMP>, Readline never rings the bell. If set to
<SAMP>`visible'</SAMP>, Readline uses a visible bell if one is available.
If set to <SAMP>`audible'</SAMP> (the default), Readline attempts to ring
the terminal's bell.
<P>
<DT><CODE>bind-tty-special-chars</CODE>
<DD><A NAME="IDX6"></A>
If set to <SAMP>`on'</SAMP>, Readline attempts to bind the control characters
treated specially by the kernel's terminal driver to their Readline
equivalents.
<P>
<DT><CODE>comment-begin</CODE>
<DD><A NAME="IDX7"></A>
The string to insert at the beginning of the line when the
<CODE>insert-comment</CODE> command is executed. The default value
is <CODE>"#"</CODE>.
<P>
<DT><CODE>completion-display-width</CODE>
<DD><A NAME="IDX8"></A>
The number of screen columns used to display possible matches
when performing completion.
The value is ignored if it is less than 0 or greater than the terminal
screen width.
A value of 0 will cause matches to be displayed one per line.
The default value is -1.
<P>
<DT><CODE>completion-ignore-case</CODE>
<DD><A NAME="IDX9"></A>
If set to <SAMP>`on'</SAMP>, Readline performs filename matching and completion
in a case-insensitive fashion.
The default value is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>completion-map-case</CODE>
<DD><A NAME="IDX10"></A>
If set to <SAMP>`on'</SAMP>, and <VAR>completion-ignore-case</VAR> is enabled, Readline
treats hyphens (<SAMP>`-'</SAMP>) and underscores (<SAMP>`_'</SAMP>) as equivalent when
performing case-insensitive filename matching and completion.
<P>
<DT><CODE>completion-prefix-display-length</CODE>
<DD><A NAME="IDX11"></A>
The length in characters of the common prefix of a list of possible
completions that is displayed without modification. When set to a
value greater than zero, common prefixes longer than this value are
replaced with an ellipsis when displaying possible completions.
<P>
<DT><CODE>completion-query-items</CODE>
<DD><A NAME="IDX12"></A>
The number of possible completions that determines when the user is
asked whether the list of possibilities should be displayed.
If the number of possible completions is greater than this value,
Readline will ask the user whether or not he wishes to view
them; otherwise, they are simply listed.
This variable must be set to an integer value greater than or equal to 0.
A negative value means Readline should never ask.
The default limit is <CODE>100</CODE>.
<P>
<DT><CODE>convert-meta</CODE>
<DD><A NAME="IDX13"></A>
If set to <SAMP>`on'</SAMP>, Readline will convert characters with the
eighth bit set to an ASCII key sequence by stripping the eighth
bit and prefixing an <KBD>ESC</KBD> character, converting them to a
meta-prefixed key sequence. The default value is <SAMP>`on'</SAMP>.
<P>
<DT><CODE>disable-completion</CODE>
<DD><A NAME="IDX14"></A>
If set to <SAMP>`On'</SAMP>, Readline will inhibit word completion.
Completion characters will be inserted into the line as if they had
been mapped to <CODE>self-insert</CODE>. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>editing-mode</CODE>
<DD><A NAME="IDX15"></A>
The <CODE>editing-mode</CODE> variable controls which default set of
key bindings is used. By default, Readline starts up in Emacs editing
mode, where the keystrokes are most similar to Emacs. This variable can be
set to either <SAMP>`emacs'</SAMP> or <SAMP>`vi'</SAMP>.
<P>
<DT><CODE>echo-control-characters</CODE>
<DD>When set to <SAMP>`on'</SAMP>, on operating systems that indicate they support it,
readline echoes a character corresponding to a signal generated from the
keyboard. The default is <SAMP>`on'</SAMP>.
<P>
<DT><CODE>enable-keypad</CODE>
<DD><A NAME="IDX16"></A>
When set to <SAMP>`on'</SAMP>, Readline will try to enable the application
keypad when it is called. Some systems need this to enable the
arrow keys. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>enable-meta-key</CODE>
<DD>When set to <SAMP>`on'</SAMP>, Readline will try to enable any meta modifier
key the terminal claims to support when it is called. On many terminals,
the meta key is used to send eight-bit characters.
The default is <SAMP>`on'</SAMP>.
<P>
<DT><CODE>expand-tilde</CODE>
<DD><A NAME="IDX17"></A>
If set to <SAMP>`on'</SAMP>, tilde expansion is performed when Readline
attempts word completion. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>history-preserve-point</CODE>
<DD><A NAME="IDX18"></A>
If set to <SAMP>`on'</SAMP>, the history code attempts to place the point (the
current cursor position) at the
same location on each history line retrieved with <CODE>previous-history</CODE>
or <CODE>next-history</CODE>. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>history-size</CODE>
<DD><A NAME="IDX19"></A>
Set the maximum number of history entries saved in the history list. If
set to zero, the number of entries in the history list is not limited.
<P>
<DT><CODE>horizontal-scroll-mode</CODE>
<DD><A NAME="IDX20"></A>
This variable can be set to either <SAMP>`on'</SAMP> or <SAMP>`off'</SAMP>. Setting it
to <SAMP>`on'</SAMP> means that the text of the lines being edited will scroll
horizontally on a single screen line when they are longer than the width
of the screen, instead of wrapping onto a new screen line. By default,
this variable is set to <SAMP>`off'</SAMP>.
<P>
<DT><CODE>input-meta</CODE>
<DD><A NAME="IDX21"></A>
<A NAME="IDX22"></A>
If set to <SAMP>`on'</SAMP>, Readline will enable eight-bit input (it
will not clear the eighth bit in the characters it reads),
regardless of what the terminal claims it can support. The
default value is <SAMP>`off'</SAMP>. The name <CODE>meta-flag</CODE> is a
synonym for this variable.
<P>
<DT><CODE>isearch-terminators</CODE>
<DD><A NAME="IDX23"></A>
The string of characters that should terminate an incremental search without
subsequently executing the character as a command (see section <A HREF="readline.html#SEC8">1.2.5 Searching for Commands in the History</A>).
If this variable has not been given a value, the characters <KBD>ESC</KBD> and
<KBD>C-J</KBD> will terminate an incremental search.
<P>
<DT><CODE>keymap</CODE>
<DD><A NAME="IDX24"></A>
Sets Readline's idea of the current keymap for key binding commands.
Acceptable <CODE>keymap</CODE> names are
<CODE>emacs</CODE>,
<CODE>emacs-standard</CODE>,
<CODE>emacs-meta</CODE>,
<CODE>emacs-ctlx</CODE>,
<CODE>vi</CODE>,
<CODE>vi-move</CODE>,
<CODE>vi-command</CODE>, and
<CODE>vi-insert</CODE>.
<CODE>vi</CODE> is equivalent to <CODE>vi-command</CODE>; <CODE>emacs</CODE> is
equivalent to <CODE>emacs-standard</CODE>. The default value is <CODE>emacs</CODE>.
The value of the <CODE>editing-mode</CODE> variable also affects the
default keymap.
<P>
<DT><CODE>mark-directories</CODE>
<DD>If set to <SAMP>`on'</SAMP>, completed directory names have a slash
appended. The default is <SAMP>`on'</SAMP>.
<P>
<DT><CODE>mark-modified-lines</CODE>
<DD><A NAME="IDX25"></A>
This variable, when set to <SAMP>`on'</SAMP>, causes Readline to display an
asterisk (<SAMP>`*'</SAMP>) at the start of history lines which have been modified.
This variable is <SAMP>`off'</SAMP> by default.
<P>
<DT><CODE>mark-symlinked-directories</CODE>
<DD><A NAME="IDX26"></A>
If set to <SAMP>`on'</SAMP>, completed names which are symbolic links
to directories have a slash appended (subject to the value of
<CODE>mark-directories</CODE>).
The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>match-hidden-files</CODE>
<DD><A NAME="IDX27"></A>
This variable, when set to <SAMP>`on'</SAMP>, causes Readline to match files whose
names begin with a <SAMP>`.'</SAMP> (hidden files) when performing filename
completion.
If set to <SAMP>`off'</SAMP>, the leading <SAMP>`.'</SAMP> must be
supplied by the user in the filename to be completed.
This variable is <SAMP>`on'</SAMP> by default.
<P>
<DT><CODE>menu-complete-display-prefix</CODE>
<DD><A NAME="IDX28"></A>
If set to <SAMP>`on'</SAMP>, menu completion displays the common prefix of the
list of possible completions (which may be empty) before cycling through
the list. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>output-meta</CODE>
<DD><A NAME="IDX29"></A>
If set to <SAMP>`on'</SAMP>, Readline will display characters with the
eighth bit set directly rather than as a meta-prefixed escape
sequence. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>page-completions</CODE>
<DD><A NAME="IDX30"></A>
If set to <SAMP>`on'</SAMP>, Readline uses an internal <CODE>more</CODE>-like pager
to display a screenful of possible completions at a time.
This variable is <SAMP>`on'</SAMP> by default.
<P>
<DT><CODE>print-completions-horizontally</CODE>
<DD>If set to <SAMP>`on'</SAMP>, Readline will display completions with matches
sorted horizontally in alphabetical order, rather than down the screen.
The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>revert-all-at-newline</CODE>
<DD><A NAME="IDX31"></A>
If set to <SAMP>`on'</SAMP>, Readline will undo all changes to history lines
before returning when <CODE>accept-line</CODE> is executed. By default,
history lines may be modified and retain individual undo lists across
calls to <CODE>readline</CODE>. The default is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>show-all-if-ambiguous</CODE>
<DD><A NAME="IDX32"></A>
This alters the default behavior of the completion functions. If
set to <SAMP>`on'</SAMP>,
words which have more than one possible completion cause the
matches to be listed immediately instead of ringing the bell.
The default value is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>show-all-if-unmodified</CODE>
<DD><A NAME="IDX33"></A>
This alters the default behavior of the completion functions in
a fashion similar to <VAR>show-all-if-ambiguous</VAR>.
If set to <SAMP>`on'</SAMP>,
words which have more than one possible completion without any
possible partial completion (the possible completions don't share
a common prefix) cause the matches to be listed immediately instead
of ringing the bell.
The default value is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>skip-completed-text</CODE>
<DD><A NAME="IDX34"></A>
If set to <SAMP>`on'</SAMP>, this alters the default completion behavior when
inserting a single match into the line. It's only active when
performing completion in the middle of a word. If enabled, readline
does not insert characters from the completion that match characters
after point in the word being completed, so portions of the word
following the cursor are not duplicated.
For instance, if this is enabled, attempting completion when the cursor
is after the <SAMP>`e'</SAMP> in <SAMP>`Makefile'</SAMP> will result in <SAMP>`Makefile'</SAMP>
rather than <SAMP>`Makefilefile'</SAMP>, assuming there is a single possible
completion.
The default value is <SAMP>`off'</SAMP>.
<P>
<DT><CODE>visible-stats</CODE>
<DD><A NAME="IDX35"></A>
If set to <SAMP>`on'</SAMP>, a character denoting a file's type
is appended to the filename when listing possible
completions. The default is <SAMP>`off'</SAMP>.
<P>
</DL>
<P>
<DT>Key Bindings
<DD>The syntax for controlling key bindings in the init file is
simple. First you need to find the name of the command that you
want to change. The following sections contain tables of the command
name, the default keybinding, if any, and a short description of what
the command does.
<P>
Once you know the name of the command, simply place on a line
in the init file the name of the key
you wish to bind the command to, a colon, and then the name of the
command.
There can be no space between the key name and the colon -- that will be
interpreted as part of the key name.
The name of the key can be expressed in different ways, depending on
what you find most comfortable.
</P><P>
In addition to command names, readline allows keys to be bound
to a string that is inserted when the key is pressed (a <VAR>macro</VAR>).
</P><P>
<DL COMPACT>
<DT><VAR>keyname</VAR>: <VAR>function-name</VAR> or <VAR>macro</VAR>
<DD><VAR>keyname</VAR> is the name of a key spelled out in English. For example:
<TABLE><tr><td> </td><td class=example><pre>Control-u: universal-argument
Meta-Rubout: backward-kill-word
Control-o: "> output"
</pre></td></tr></table><P>
In the above example, <KBD>C-u</KBD> is bound to the function
<CODE>universal-argument</CODE>,
<KBD>M-DEL</KBD> is bound to the function <CODE>backward-kill-word</CODE>, and
<KBD>C-o</KBD> is bound to run the macro
expressed on the right hand side (that is, to insert the text
<SAMP>`> output'</SAMP> into the line).
</P><P>
A number of symbolic character names are recognized while
processing this key binding syntax:
<VAR>DEL</VAR>,
<VAR>ESC</VAR>,
<VAR>ESCAPE</VAR>,
<VAR>LFD</VAR>,
<VAR>NEWLINE</VAR>,
<VAR>RET</VAR>,
<VAR>RETURN</VAR>,
<VAR>RUBOUT</VAR>,
<VAR>SPACE</VAR>,
<VAR>SPC</VAR>,
and
<VAR>TAB</VAR>.
</P><P>
<DT>"<VAR>keyseq</VAR>": <VAR>function-name</VAR> or <VAR>macro</VAR>
<DD><VAR>keyseq</VAR> differs from <VAR>keyname</VAR> above in that strings
denoting an entire key sequence can be specified, by placing
the key sequence in double quotes. Some GNU Emacs style key
escapes can be used, as in the following example, but the
special character names are not recognized.
<P>
<TABLE><tr><td> </td><td class=example><pre>"\C-u": universal-argument
"\C-x\C-r": re-read-init-file
"\e[11~": "Function Key 1"
</pre></td></tr></table></P><P>
In the above example, <KBD>C-u</KBD> is again bound to the function
<CODE>universal-argument</CODE> (just as it was in the first example),
<SAMP>`<KBD>C-x</KBD> <KBD>C-r</KBD>'</SAMP> is bound to the function <CODE>re-read-init-file</CODE>,
and <SAMP>`<KBD>ESC</KBD> <KBD>[</KBD> <KBD>1</KBD> <KBD>1</KBD> <KBD>~</KBD>'</SAMP> is bound to insert
the text <SAMP>`Function Key 1'</SAMP>.
</P><P>
</DL>
<P>
The following GNU Emacs style escape sequences are available when
specifying key sequences:
</P><P>
<DL COMPACT>
<DT><CODE><KBD>\C-</KBD></CODE>
<DD>control prefix
<DT><CODE><KBD>\M-</KBD></CODE>
<DD>meta prefix
<DT><CODE><KBD>\e</KBD></CODE>
<DD>an escape character
<DT><CODE><KBD>\\</KBD></CODE>
<DD>backslash
<DT><CODE><KBD>\"</KBD></CODE>
<DD><KBD>"</KBD>, a double quotation mark
<DT><CODE><KBD>\'</KBD></CODE>
<DD><KBD>'</KBD>, a single quote or apostrophe
</DL>
<P>
In addition to the GNU Emacs style escape sequences, a second
set of backslash escapes is available:
</P><P>
<DL COMPACT>
<DT><CODE>\a</CODE>
<DD>alert (bell)
<DT><CODE>\b</CODE>
<DD>backspace
<DT><CODE>\d</CODE>
<DD>delete
<DT><CODE>\f</CODE>
<DD>form feed
<DT><CODE>\n</CODE>
<DD>newline
<DT><CODE>\r</CODE>
<DD>carriage return
<DT><CODE>\t</CODE>
<DD>horizontal tab
<DT><CODE>\v</CODE>
<DD>vertical tab
<DT><CODE>\<VAR>nnn</VAR></CODE>
<DD>the eight-bit character whose value is the octal value <VAR>nnn</VAR>
(one to three digits)
<DT><CODE>\x<VAR>HH</VAR></CODE>
<DD>the eight-bit character whose value is the hexadecimal value <VAR>HH</VAR>
(one or two hex digits)
</DL>
<P>
When entering the text of a macro, single or double quotes must
be used to indicate a macro definition.
Unquoted text is assumed to be a function name.
In the macro body, the backslash escapes described above are expanded.
Backslash will quote any other character in the macro text,
including <SAMP>`"'</SAMP> and <SAMP>`''</SAMP>.
For example, the following binding will make <SAMP>`<KBD>C-x</KBD> \'</SAMP>
insert a single <SAMP>`\'</SAMP> into the line:
<TABLE><tr><td> </td><td class=example><pre>"\C-x\\": "\\"
</pre></td></tr></table></P><P>
</DL>
<P>
<A NAME="Conditional Init Constructs"></A>
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<H3> 1.3.2 Conditional Init Constructs </H3>
<!--docid::SEC11::-->
<P>
Readline implements a facility similar in spirit to the conditional
compilation features of the C preprocessor which allows key
bindings and variable settings to be performed as the result
of tests. There are four parser directives used.
</P><P>
<DL COMPACT>
<DT><CODE>$if</CODE>
<DD>The <CODE>$if</CODE> construct allows bindings to be made based on the
editing mode, the terminal being used, or the application using
Readline. The text of the test extends to the end of the line;
no characters are required to isolate it.
<P>
<DL COMPACT>
<DT><CODE>mode</CODE>
<DD>The <CODE>mode=</CODE> form of the <CODE>$if</CODE> directive is used to test
whether Readline is in <CODE>emacs</CODE> or <CODE>vi</CODE> mode.
This may be used in conjunction
with the <SAMP>`set keymap'</SAMP> command, for instance, to set bindings in
the <CODE>emacs-standard</CODE> and <CODE>emacs-ctlx</CODE> keymaps only if
Readline is starting out in <CODE>emacs</CODE> mode.
<P>
<DT><CODE>term</CODE>
<DD>The <CODE>term=</CODE> form may be used to include terminal-specific
key bindings, perhaps to bind the key sequences output by the
terminal's function keys. The word on the right side of the
<SAMP>`='</SAMP> is tested against both the full name of the terminal and
the portion of the terminal name before the first <SAMP>`-'</SAMP>. This
allows <CODE>sun</CODE> to match both <CODE>sun</CODE> and <CODE>sun-cmd</CODE>,
for instance.
<P>
<DT><CODE>application</CODE>
<DD>The <VAR>application</VAR> construct is used to include
application-specific settings. Each program using the Readline
library sets the <VAR>application name</VAR>, and you can test for
a particular value.
This could be used to bind key sequences to functions useful for
a specific program. For instance, the following command adds a
key sequence that quotes the current or previous word in Bash:
<TABLE><tr><td> </td><td class=example><pre>$if Bash
# Quote the current or previous word
"\C-xq": "\eb\"\ef\""
$endif
</pre></td></tr></table></DL>
<P>
<DT><CODE>$endif</CODE>
<DD>This command, as seen in the previous example, terminates an
<CODE>$if</CODE> command.
<P>
<DT><CODE>$else</CODE>
<DD>Commands in this branch of the <CODE>$if</CODE> directive are executed if
the test fails.
<P>
<DT><CODE>$include</CODE>
<DD>This directive takes a single filename as an argument and reads commands
and bindings from that file.
For example, the following directive reads from <TT>`/etc/inputrc'</TT>:
<TABLE><tr><td> </td><td class=example><pre>$include /etc/inputrc
</pre></td></tr></table></DL>
<P>
<A NAME="Sample Init File"></A>
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<H3> 1.3.3 Sample Init File </H3>
<!--docid::SEC12::-->
<P>
Here is an example of an <VAR>inputrc</VAR> file. This illustrates key
binding, variable assignment, and conditional syntax.
</P><P>
<TABLE><tr><td> </td><td class=example><pre># This file controls the behaviour of line input editing for
# programs that use the GNU Readline library. Existing
# programs include FTP, Bash, and GDB.
#
# You can re-read the inputrc file with C-x C-r.
# Lines beginning with '#' are comments.
#
# First, include any systemwide bindings and variable
# assignments from /etc/Inputrc
$include /etc/Inputrc
#
# Set various bindings for emacs mode.
set editing-mode emacs
$if mode=emacs
Meta-Control-h: backward-kill-word Text after the function name is ignored
#
# Arrow keys in keypad mode
#
#"\M-OD": backward-char
#"\M-OC": forward-char
#"\M-OA": previous-history
#"\M-OB": next-history
#
# Arrow keys in ANSI mode
#
"\M-[D": backward-char
"\M-[C": forward-char
"\M-[A": previous-history
"\M-[B": next-history
#
# Arrow keys in 8 bit keypad mode
#
#"\M-\C-OD": backward-char
#"\M-\C-OC": forward-char
#"\M-\C-OA": previous-history
#"\M-\C-OB": next-history
#
# Arrow keys in 8 bit ANSI mode
#
#"\M-\C-[D": backward-char
#"\M-\C-[C": forward-char
#"\M-\C-[A": previous-history
#"\M-\C-[B": next-history
C-q: quoted-insert
$endif
# An old-style binding. This happens to be the default.
TAB: complete
# Macros that are convenient for shell interaction
$if Bash
# edit the path
"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
# prepare to type a quoted word --
# insert open and close double quotes
# and move to just after the open quote
"\C-x\"": "\"\"\C-b"
# insert a backslash (testing backslash escapes
# in sequences and macros)
"\C-x\\": "\\"
# Quote the current or previous word
"\C-xq": "\eb\"\ef\""
# Add a binding to refresh the line, which is unbound
"\C-xr": redraw-current-line
# Edit variable on current line.
"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
$endif
# use a visible bell if one is available
set bell-style visible
# don't strip characters to 7 bits when reading
set input-meta on
# allow iso-latin1 characters to be inserted rather
# than converted to prefix-meta sequences
set convert-meta off
# display characters with the eighth bit set directly
# rather than as meta-prefixed characters
set output-meta on
# if there are more than 150 possible completions for
# a word, ask the user if he wants to see all of them
set completion-query-items 150
# For FTP
$if Ftp
"\C-xg": "get \M-?"
"\C-xt": "put \M-?"
"\M-.": yank-last-arg
$endif
</pre></td></tr></table></P><P>
<A NAME="Bindable Readline Commands"></A>
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<H2> 1.4 Bindable Readline Commands </H2>
<!--docid::SEC13::-->
<P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Moving about the line.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Getting at previous lines.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Commands for changing text.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Commands for killing and yanking.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC18">1.4.5 Specifying Numeric Arguments</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Specifying numeric arguments, repeat counts.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Getting Readline to do the typing for you.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Saving and re-executing typed characters</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Other miscellaneous commands.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
This section describes Readline commands that may be bound to key
sequences.
Command names without an accompanying key sequence are unbound by default.
</P><P>
In the following descriptions, <EM>point</EM> refers to the current cursor
position, and <EM>mark</EM> refers to a cursor position saved by the
<CODE>set-mark</CODE> command.
The text between the point and mark is referred to as the <EM>region</EM>.
</P><P>
<A NAME="Commands For Moving"></A>
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<H3> 1.4.1 Commands For Moving </H3>
<!--docid::SEC14::-->
<DL COMPACT>
<A NAME="IDX36"></A>
<DT><CODE>beginning-of-line (C-a)</CODE>
<DD><A NAME="IDX37"></A>
Move to the start of the current line.
<P>
<A NAME="IDX38"></A>
<DT><CODE>end-of-line (C-e)</CODE>
<DD><A NAME="IDX39"></A>
Move to the end of the line.
<P>
<A NAME="IDX40"></A>
<DT><CODE>forward-char (C-f)</CODE>
<DD><A NAME="IDX41"></A>
Move forward a character.
<P>
<A NAME="IDX42"></A>
<DT><CODE>backward-char (C-b)</CODE>
<DD><A NAME="IDX43"></A>
Move back a character.
<P>
<A NAME="IDX44"></A>
<DT><CODE>forward-word (M-f)</CODE>
<DD><A NAME="IDX45"></A>
Move forward to the end of the next word.
Words are composed of letters and digits.
<P>
<A NAME="IDX46"></A>
<DT><CODE>backward-word (M-b)</CODE>
<DD><A NAME="IDX47"></A>
Move back to the start of the current or previous word.
Words are composed of letters and digits.
<P>
<A NAME="IDX48"></A>
<DT><CODE>clear-screen (C-l)</CODE>
<DD><A NAME="IDX49"></A>
Clear the screen and redraw the current line,
leaving the current line at the top of the screen.
<P>
<A NAME="IDX50"></A>
<DT><CODE>redraw-current-line ()</CODE>
<DD><A NAME="IDX51"></A>
Refresh the current line. By default, this is unbound.
<P>
</DL>
<P>
<A NAME="Commands For History"></A>
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<H3> 1.4.2 Commands For Manipulating The History </H3>
<!--docid::SEC15::-->
<P>
<DL COMPACT>
<A NAME="IDX52"></A>
<DT><CODE>accept-line (Newline or Return)</CODE>
<DD><A NAME="IDX53"></A>
Accept the line regardless of where the cursor is.
If this line is
non-empty, it may be added to the history list for future recall with
<CODE>add_history()</CODE>.
If this line is a modified history line, the history line is restored
to its original state.
<P>
<A NAME="IDX54"></A>
<DT><CODE>previous-history (C-p)</CODE>
<DD><A NAME="IDX55"></A>
Move `back' through the history list, fetching the previous command.
<P>
<A NAME="IDX56"></A>
<DT><CODE>next-history (C-n)</CODE>
<DD><A NAME="IDX57"></A>
Move `forward' through the history list, fetching the next command.
<P>
<A NAME="IDX58"></A>
<DT><CODE>beginning-of-history (M-<)</CODE>
<DD><A NAME="IDX59"></A>
Move to the first line in the history.
<P>
<A NAME="IDX60"></A>
<DT><CODE>end-of-history (M->)</CODE>
<DD><A NAME="IDX61"></A>
Move to the end of the input history, i.e., the line currently
being entered.
<P>
<A NAME="IDX62"></A>
<DT><CODE>reverse-search-history (C-r)</CODE>
<DD><A NAME="IDX63"></A>
Search backward starting at the current line and moving `up' through
the history as necessary. This is an incremental search.
<P>
<A NAME="IDX64"></A>
<DT><CODE>forward-search-history (C-s)</CODE>
<DD><A NAME="IDX65"></A>
Search forward starting at the current line and moving `down' through
the the history as necessary. This is an incremental search.
<P>
<A NAME="IDX66"></A>
<DT><CODE>non-incremental-reverse-search-history (M-p)</CODE>
<DD><A NAME="IDX67"></A>
Search backward starting at the current line and moving `up'
through the history as necessary using a non-incremental search
for a string supplied by the user.
<P>
<A NAME="IDX68"></A>
<DT><CODE>non-incremental-forward-search-history (M-n)</CODE>
<DD><A NAME="IDX69"></A>
Search forward starting at the current line and moving `down'
through the the history as necessary using a non-incremental search
for a string supplied by the user.
<P>
<A NAME="IDX70"></A>
<DT><CODE>history-search-forward ()</CODE>
<DD><A NAME="IDX71"></A>
Search forward through the history for the string of characters
between the start of the current line and the point.
This is a non-incremental search.
By default, this command is unbound.
<P>
<A NAME="IDX72"></A>
<DT><CODE>history-search-backward ()</CODE>
<DD><A NAME="IDX73"></A>
Search backward through the history for the string of characters
between the start of the current line and the point. This
is a non-incremental search. By default, this command is unbound.
<P>
<A NAME="IDX74"></A>
<DT><CODE>yank-nth-arg (M-C-y)</CODE>
<DD><A NAME="IDX75"></A>
Insert the first argument to the previous command (usually
the second word on the previous line) at point.
With an argument <VAR>n</VAR>,
insert the <VAR>n</VAR>th word from the previous command (the words
in the previous command begin with word 0). A negative argument
inserts the <VAR>n</VAR>th word from the end of the previous command.
Once the argument <VAR>n</VAR> is computed, the argument is extracted
as if the <SAMP>`!<VAR>n</VAR>'</SAMP> history expansion had been specified.
<P>
<A NAME="IDX76"></A>
<DT><CODE>yank-last-arg (M-. or M-_)</CODE>
<DD><A NAME="IDX77"></A>
Insert last argument to the previous command (the last word of the
previous history entry).
With a numeric argument, behave exactly like <CODE>yank-nth-arg</CODE>.
Successive calls to <CODE>yank-last-arg</CODE> move back through the history
list, inserting the last word (or the word specified by the argument to
the first call) of each line in turn.
Any numeric argument supplied to these successive calls determines
the direction to move through the history. A negative argument switches
the direction through the history (back or forward).
The history expansion facilities are used to extract the last argument,
as if the <SAMP>`!$'</SAMP> history expansion had been specified.
<P>
</DL>
<P>
<A NAME="Commands For Text"></A>
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<H3> 1.4.3 Commands For Changing Text </H3>
<!--docid::SEC16::-->
<P>
<DL COMPACT>
<A NAME="IDX78"></A>
<DT><CODE>delete-char (C-d)</CODE>
<DD><A NAME="IDX79"></A>
Delete the character at point. If point is at the
beginning of the line, there are no characters in the line, and
the last character typed was not bound to <CODE>delete-char</CODE>, then
return EOF.
<P>
<A NAME="IDX80"></A>
<DT><CODE>backward-delete-char (Rubout)</CODE>
<DD><A NAME="IDX81"></A>
Delete the character behind the cursor. A numeric argument means
to kill the characters instead of deleting them.
<P>
<A NAME="IDX82"></A>
<DT><CODE>forward-backward-delete-char ()</CODE>
<DD><A NAME="IDX83"></A>
Delete the character under the cursor, unless the cursor is at the
end of the line, in which case the character behind the cursor is
deleted. By default, this is not bound to a key.
<P>
<A NAME="IDX84"></A>
<DT><CODE>quoted-insert (C-q or C-v)</CODE>
<DD><A NAME="IDX85"></A>
Add the next character typed to the line verbatim. This is
how to insert key sequences like <KBD>C-q</KBD>, for example.
<P>
<A NAME="IDX86"></A>
<DT><CODE>tab-insert (M-<KBD>TAB</KBD>)</CODE>
<DD><A NAME="IDX87"></A>
Insert a tab character.
<P>
<A NAME="IDX88"></A>
<DT><CODE>self-insert (a, b, A, 1, !, <small>...</small>)</CODE>
<DD><A NAME="IDX89"></A>
Insert yourself.
<P>
<A NAME="IDX90"></A>
<DT><CODE>transpose-chars (C-t)</CODE>
<DD><A NAME="IDX91"></A>
Drag the character before the cursor forward over
the character at the cursor, moving the
cursor forward as well. If the insertion point
is at the end of the line, then this
transposes the last two characters of the line.
Negative arguments have no effect.
<P>
<A NAME="IDX92"></A>
<DT><CODE>transpose-words (M-t)</CODE>
<DD><A NAME="IDX93"></A>
Drag the word before point past the word after point,
moving point past that word as well.
If the insertion point is at the end of the line, this transposes
the last two words on the line.
<P>
<A NAME="IDX94"></A>
<DT><CODE>upcase-word (M-u)</CODE>
<DD><A NAME="IDX95"></A>
Uppercase the current (or following) word. With a negative argument,
uppercase the previous word, but do not move the cursor.
<P>
<A NAME="IDX96"></A>
<DT><CODE>downcase-word (M-l)</CODE>
<DD><A NAME="IDX97"></A>
Lowercase the current (or following) word. With a negative argument,
lowercase the previous word, but do not move the cursor.
<P>
<A NAME="IDX98"></A>
<DT><CODE>capitalize-word (M-c)</CODE>
<DD><A NAME="IDX99"></A>
Capitalize the current (or following) word. With a negative argument,
capitalize the previous word, but do not move the cursor.
<P>
<A NAME="IDX100"></A>
<DT><CODE>overwrite-mode ()</CODE>
<DD><A NAME="IDX101"></A>
Toggle overwrite mode. With an explicit positive numeric argument,
switches to overwrite mode. With an explicit non-positive numeric
argument, switches to insert mode. This command affects only
<CODE>emacs</CODE> mode; <CODE>vi</CODE> mode does overwrite differently.
Each call to <CODE>readline()</CODE> starts in insert mode.
<P>
In overwrite mode, characters bound to <CODE>self-insert</CODE> replace
the text at point rather than pushing the text to the right.
Characters bound to <CODE>backward-delete-char</CODE> replace the character
before point with a space.
</P><P>
By default, this command is unbound.
</P><P>
</DL>
<P>
<A NAME="Commands For Killing"></A>
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<H3> 1.4.4 Killing And Yanking </H3>
<!--docid::SEC17::-->
<P>
<DL COMPACT>
<A NAME="IDX102"></A>
<DT><CODE>kill-line (C-k)</CODE>
<DD><A NAME="IDX103"></A>
Kill the text from point to the end of the line.
<P>
<A NAME="IDX104"></A>
<DT><CODE>backward-kill-line (C-x Rubout)</CODE>
<DD><A NAME="IDX105"></A>
Kill backward to the beginning of the line.
<P>
<A NAME="IDX106"></A>
<DT><CODE>unix-line-discard (C-u)</CODE>
<DD><A NAME="IDX107"></A>
Kill backward from the cursor to the beginning of the current line.
<P>
<A NAME="IDX108"></A>
<DT><CODE>kill-whole-line ()</CODE>
<DD><A NAME="IDX109"></A>
Kill all characters on the current line, no matter where point is.
By default, this is unbound.
<P>
<A NAME="IDX110"></A>
<DT><CODE>kill-word (M-d)</CODE>
<DD><A NAME="IDX111"></A>
Kill from point to the end of the current word, or if between
words, to the end of the next word.
Word boundaries are the same as <CODE>forward-word</CODE>.
<P>
<A NAME="IDX112"></A>
<DT><CODE>backward-kill-word (M-<KBD>DEL</KBD>)</CODE>
<DD><A NAME="IDX113"></A>
Kill the word behind point.
Word boundaries are the same as <CODE>backward-word</CODE>.
<P>
<A NAME="IDX114"></A>
<DT><CODE>unix-word-rubout (C-w)</CODE>
<DD><A NAME="IDX115"></A>
Kill the word behind point, using white space as a word boundary.
The killed text is saved on the kill-ring.
<P>
<A NAME="IDX116"></A>
<DT><CODE>unix-filename-rubout ()</CODE>
<DD><A NAME="IDX117"></A>
Kill the word behind point, using white space and the slash character
as the word boundaries.
The killed text is saved on the kill-ring.
<P>
<A NAME="IDX118"></A>
<DT><CODE>delete-horizontal-space ()</CODE>
<DD><A NAME="IDX119"></A>
Delete all spaces and tabs around point. By default, this is unbound.
<P>
<A NAME="IDX120"></A>
<DT><CODE>kill-region ()</CODE>
<DD><A NAME="IDX121"></A>
Kill the text in the current region.
By default, this command is unbound.
<P>
<A NAME="IDX122"></A>
<DT><CODE>copy-region-as-kill ()</CODE>
<DD><A NAME="IDX123"></A>
Copy the text in the region to the kill buffer, so it can be yanked
right away. By default, this command is unbound.
<P>
<A NAME="IDX124"></A>
<DT><CODE>copy-backward-word ()</CODE>
<DD><A NAME="IDX125"></A>
Copy the word before point to the kill buffer.
The word boundaries are the same as <CODE>backward-word</CODE>.
By default, this command is unbound.
<P>
<A NAME="IDX126"></A>
<DT><CODE>copy-forward-word ()</CODE>
<DD><A NAME="IDX127"></A>
Copy the word following point to the kill buffer.
The word boundaries are the same as <CODE>forward-word</CODE>.
By default, this command is unbound.
<P>
<A NAME="IDX128"></A>
<DT><CODE>yank (C-y)</CODE>
<DD><A NAME="IDX129"></A>
Yank the top of the kill ring into the buffer at point.
<P>
<A NAME="IDX130"></A>
<DT><CODE>yank-pop (M-y)</CODE>
<DD><A NAME="IDX131"></A>
Rotate the kill-ring, and yank the new top. You can only do this if
the prior command is <CODE>yank</CODE> or <CODE>yank-pop</CODE>.
</DL>
<P>
<A NAME="Numeric Arguments"></A>
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<H3> 1.4.5 Specifying Numeric Arguments </H3>
<!--docid::SEC18::-->
<DL COMPACT>
<A NAME="IDX132"></A>
<DT><CODE>digit-argument (<KBD>M-0</KBD>, <KBD>M-1</KBD>, <small>...</small> <KBD>M--</KBD>)</CODE>
<DD><A NAME="IDX133"></A>
Add this digit to the argument already accumulating, or start a new
argument. <KBD>M--</KBD> starts a negative argument.
<P>
<A NAME="IDX134"></A>
<DT><CODE>universal-argument ()</CODE>
<DD><A NAME="IDX135"></A>
This is another way to specify an argument.
If this command is followed by one or more digits, optionally with a
leading minus sign, those digits define the argument.
If the command is followed by digits, executing <CODE>universal-argument</CODE>
again ends the numeric argument, but is otherwise ignored.
As a special case, if this command is immediately followed by a
character that is neither a digit or minus sign, the argument count
for the next command is multiplied by four.
The argument count is initially one, so executing this function the
first time makes the argument count four, a second time makes the
argument count sixteen, and so on.
By default, this is not bound to a key.
</DL>
<P>
<A NAME="Commands For Completion"></A>
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<H3> 1.4.6 Letting Readline Type For You </H3>
<!--docid::SEC19::-->
<P>
<DL COMPACT>
<A NAME="IDX136"></A>
<DT><CODE>complete (<KBD>TAB</KBD>)</CODE>
<DD><A NAME="IDX137"></A>
Attempt to perform completion on the text before point.
The actual completion performed is application-specific.
The default is filename completion.
<P>
<A NAME="IDX138"></A>
<DT><CODE>possible-completions (M-?)</CODE>
<DD><A NAME="IDX139"></A>
List the possible completions of the text before point.
When displaying completions, Readline sets the number of columns used
for display to the value of <CODE>completion-display-width</CODE>, the value of
the environment variable <CODE>COLUMNS</CODE>, or the screen width, in that order.
<P>
<A NAME="IDX140"></A>
<DT><CODE>insert-completions (M-*)</CODE>
<DD><A NAME="IDX141"></A>
Insert all completions of the text before point that would have
been generated by <CODE>possible-completions</CODE>.
<P>
<A NAME="IDX142"></A>
<DT><CODE>menu-complete ()</CODE>
<DD><A NAME="IDX143"></A>
Similar to <CODE>complete</CODE>, but replaces the word to be completed
with a single match from the list of possible completions.
Repeated execution of <CODE>menu-complete</CODE> steps through the list
of possible completions, inserting each match in turn.
At the end of the list of completions, the bell is rung
(subject to the setting of <CODE>bell-style</CODE>)
and the original text is restored.
An argument of <VAR>n</VAR> moves <VAR>n</VAR> positions forward in the list
of matches; a negative argument may be used to move backward
through the list.
This command is intended to be bound to <KBD>TAB</KBD>, but is unbound
by default.
<P>
<A NAME="IDX144"></A>
<DT><CODE>menu-complete-backward ()</CODE>
<DD><A NAME="IDX145"></A>
Identical to <CODE>menu-complete</CODE>, but moves backward through the list
of possible completions, as if <CODE>menu-complete</CODE> had been given a
negative argument.
<P>
<A NAME="IDX146"></A>
<DT><CODE>delete-char-or-list ()</CODE>
<DD><A NAME="IDX147"></A>
Deletes the character under the cursor if not at the beginning or
end of the line (like <CODE>delete-char</CODE>).
If at the end of the line, behaves identically to
<CODE>possible-completions</CODE>.
This command is unbound by default.
<P>
</DL>
<P>
<A NAME="Keyboard Macros"></A>
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<H3> 1.4.7 Keyboard Macros </H3>
<!--docid::SEC20::-->
<DL COMPACT>
<A NAME="IDX148"></A>
<DT><CODE>start-kbd-macro (C-x ()</CODE>
<DD><A NAME="IDX149"></A>
Begin saving the characters typed into the current keyboard macro.
<P>
<A NAME="IDX150"></A>
<DT><CODE>end-kbd-macro (C-x ))</CODE>
<DD><A NAME="IDX151"></A>
Stop saving the characters typed into the current keyboard macro
and save the definition.
<P>
<A NAME="IDX152"></A>
<DT><CODE>call-last-kbd-macro (C-x e)</CODE>
<DD><A NAME="IDX153"></A>
Re-execute the last keyboard macro defined, by making the characters
in the macro appear as if typed at the keyboard.
<P>
</DL>
<P>
<A NAME="Miscellaneous Commands"></A>
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<H3> 1.4.8 Some Miscellaneous Commands </H3>
<!--docid::SEC21::-->
<DL COMPACT>
<A NAME="IDX154"></A>
<DT><CODE>re-read-init-file (C-x C-r)</CODE>
<DD><A NAME="IDX155"></A>
Read in the contents of the <VAR>inputrc</VAR> file, and incorporate
any bindings or variable assignments found there.
<P>
<A NAME="IDX156"></A>
<DT><CODE>abort (C-g)</CODE>
<DD><A NAME="IDX157"></A>
Abort the current editing command and
ring the terminal's bell (subject to the setting of
<CODE>bell-style</CODE>).
<P>
<A NAME="IDX158"></A>
<DT><CODE>do-uppercase-version (M-a, M-b, M-<VAR>x</VAR>, <small>...</small>)</CODE>
<DD><A NAME="IDX159"></A>
If the metafied character <VAR>x</VAR> is lowercase, run the command
that is bound to the corresponding uppercase character.
<P>
<A NAME="IDX160"></A>
<DT><CODE>prefix-meta (<KBD>ESC</KBD>)</CODE>
<DD><A NAME="IDX161"></A>
Metafy the next character typed. This is for keyboards
without a meta key. Typing <SAMP>`<KBD>ESC</KBD> f'</SAMP> is equivalent to typing
<KBD>M-f</KBD>.
<P>
<A NAME="IDX162"></A>
<DT><CODE>undo (C-_ or C-x C-u)</CODE>
<DD><A NAME="IDX163"></A>
Incremental undo, separately remembered for each line.
<P>
<A NAME="IDX164"></A>
<DT><CODE>revert-line (M-r)</CODE>
<DD><A NAME="IDX165"></A>
Undo all changes made to this line. This is like executing the <CODE>undo</CODE>
command enough times to get back to the beginning.
<P>
<A NAME="IDX166"></A>
<DT><CODE>tilde-expand (M-~)</CODE>
<DD><A NAME="IDX167"></A>
Perform tilde expansion on the current word.
<P>
<A NAME="IDX168"></A>
<DT><CODE>set-mark (C-@)</CODE>
<DD><A NAME="IDX169"></A>
Set the mark to the point. If a
numeric argument is supplied, the mark is set to that position.
<P>
<A NAME="IDX170"></A>
<DT><CODE>exchange-point-and-mark (C-x C-x)</CODE>
<DD><A NAME="IDX171"></A>
Swap the point with the mark. The current cursor position is set to
the saved position, and the old cursor position is saved as the mark.
<P>
<A NAME="IDX172"></A>
<DT><CODE>character-search (C-])</CODE>
<DD><A NAME="IDX173"></A>
A character is read and point is moved to the next occurrence of that
character. A negative count searches for previous occurrences.
<P>
<A NAME="IDX174"></A>
<DT><CODE>character-search-backward (M-C-])</CODE>
<DD><A NAME="IDX175"></A>
A character is read and point is moved to the previous occurrence
of that character. A negative count searches for subsequent
occurrences.
<P>
<A NAME="IDX176"></A>
<DT><CODE>skip-csi-sequence ()</CODE>
<DD><A NAME="IDX177"></A>
Read enough characters to consume a multi-key sequence such as those
defined for keys like Home and End. Such sequences begin with a
Control Sequence Indicator (CSI), usually ESC-[. If this sequence is
bound to "\e[", keys producing such sequences will have no effect
unless explicitly bound to a readline command, instead of inserting
stray characters into the editing buffer. This is unbound by default,
but usually bound to ESC-[.
<P>
<A NAME="IDX178"></A>
<DT><CODE>insert-comment (M-#)</CODE>
<DD><A NAME="IDX179"></A>
Without a numeric argument, the value of the <CODE>comment-begin</CODE>
variable is inserted at the beginning of the current line.
If a numeric argument is supplied, this command acts as a toggle: if
the characters at the beginning of the line do not match the value
of <CODE>comment-begin</CODE>, the value is inserted, otherwise
the characters in <CODE>comment-begin</CODE> are deleted from the beginning of
the line.
In either case, the line is accepted as if a newline had been typed.
<P>
<A NAME="IDX180"></A>
<DT><CODE>dump-functions ()</CODE>
<DD><A NAME="IDX181"></A>
Print all of the functions and their key bindings to the
Readline output stream. If a numeric argument is supplied,
the output is formatted in such a way that it can be made part
of an <VAR>inputrc</VAR> file. This command is unbound by default.
<P>
<A NAME="IDX182"></A>
<DT><CODE>dump-variables ()</CODE>
<DD><A NAME="IDX183"></A>
Print all of the settable variables and their values to the
Readline output stream. If a numeric argument is supplied,
the output is formatted in such a way that it can be made part
of an <VAR>inputrc</VAR> file. This command is unbound by default.
<P>
<A NAME="IDX184"></A>
<DT><CODE>dump-macros ()</CODE>
<DD><A NAME="IDX185"></A>
Print all of the Readline key sequences bound to macros and the
strings they output. If a numeric argument is supplied,
the output is formatted in such a way that it can be made part
of an <VAR>inputrc</VAR> file. This command is unbound by default.
<P>
<A NAME="IDX186"></A>
<DT><CODE>emacs-editing-mode (C-e)</CODE>
<DD><A NAME="IDX187"></A>
When in <CODE>vi</CODE> command mode, this causes a switch to <CODE>emacs</CODE>
editing mode.
<P>
<A NAME="IDX188"></A>
<DT><CODE>vi-editing-mode (M-C-j)</CODE>
<DD><A NAME="IDX189"></A>
When in <CODE>emacs</CODE> editing mode, this causes a switch to <CODE>vi</CODE>
editing mode.
<P>
</DL>
<P>
<A NAME="Readline vi Mode"></A>
<HR SIZE="6">
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<H2> 1.5 Readline vi Mode </H2>
<!--docid::SEC22::-->
<P>
While the Readline library does not have a full set of <CODE>vi</CODE>
editing functions, it does contain enough to allow simple editing
of the line. The Readline <CODE>vi</CODE> mode behaves as specified in
the POSIX standard.
</P><P>
In order to switch interactively between <CODE>emacs</CODE> and <CODE>vi</CODE>
editing modes, use the command <KBD>M-C-j</KBD> (bound to emacs-editing-mode
when in <CODE>vi</CODE> mode and to vi-editing-mode in <CODE>emacs</CODE> mode).
The Readline default is <CODE>emacs</CODE> mode.
</P><P>
When you enter a line in <CODE>vi</CODE> mode, you are already placed in
`insertion' mode, as if you had typed an <SAMP>`i'</SAMP>. Pressing <KBD>ESC</KBD>
switches you into `command' mode, where you can edit the text of the
line with the standard <CODE>vi</CODE> movement keys, move to previous
history lines with <SAMP>`k'</SAMP> and subsequent lines with <SAMP>`j'</SAMP>, and
so forth.
</P><P>
This document describes the GNU Readline Library, a utility for aiding
in the consistency of user interface across discrete programs that need
to provide a command line interface.
</P><P>
Copyright (C) 1988--2011 Free Software Foundation, Inc.
</P><P>
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice
pare preserved on all copies.
</P><P>
Permission is granted to copy and distribute modified versions of this
manual under the conditions for verbatim copying, provided that the entire
resulting derived work is distributed under the terms of a permission
notice identical to this one.
</P><P>
Permission is granted to copy and distribute translations of this manual
into another language, under the above conditions for modified versions,
except that this permission notice may be stated in a translation approved
by the Foundation.
</P><P>
<A NAME="Programming with GNU Readline"></A>
<HR SIZE="6">
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<H1> 2. Programming with GNU Readline </H1>
<!--docid::SEC23::-->
<P>
This chapter describes the interface between the GNU Readline Library and
other programs. If you are a programmer, and you wish to include the
features found in GNU Readline
such as completion, line editing, and interactive history manipulation
in your own programs, this section is for you.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC24">2.1 Basic Behavior</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Using the default behavior of Readline.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC25">2.2 Custom Functions</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Adding your own functions to Readline.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Variables accessible to custom
functions.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC29">2.4 Readline Convenience Functions</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions which Readline supplies to
aid in writing your own custom
functions.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">How Readline behaves when it receives signals.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC44">2.6 Custom Completers</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Supplanting or supplementing Readline's
completion functions.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="Basic Behavior"></A>
<HR SIZE="6">
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H2> 2.1 Basic Behavior </H2>
<!--docid::SEC24::-->
<P>
Many programs provide a command line interface, such as <CODE>mail</CODE>,
<CODE>ftp</CODE>, and <CODE>sh</CODE>. For such programs, the default behaviour of
Readline is sufficient. This section describes how to use Readline in
the simplest way possible, perhaps to replace calls in your code to
<CODE>gets()</CODE> or <CODE>fgets()</CODE>.
</P><P>
<A NAME="IDX190"></A>
<A NAME="IDX191"></A>
</P><P>
The function <CODE>readline()</CODE> prints a prompt <VAR>prompt</VAR>
and then reads and returns a single line of text from the user.
If <VAR>prompt</VAR> is <CODE>NULL</CODE> or the empty string, no prompt is displayed.
The line <CODE>readline</CODE> returns is allocated with <CODE>malloc()</CODE>;
the caller should <CODE>free()</CODE> the line when it has finished with it.
The declaration for <CODE>readline</CODE> in ANSI C is
</P><P>
<TABLE><tr><td> </td><td class=example><pre><CODE>char *readline (const char *<VAR>prompt</VAR>);</CODE>
</pre></td></tr></table></P><P>
So, one might say
<TABLE><tr><td> </td><td class=example><pre><CODE>char *line = readline ("Enter a line: ");</CODE>
</pre></td></tr></table>in order to read a line of text from the user.
The line returned has the final newline removed, so only the
text remains.
</P><P>
If <CODE>readline</CODE> encounters an <CODE>EOF</CODE> while reading the line, and the
line is empty at that point, then <CODE>(char *)NULL</CODE> is returned.
Otherwise, the line is ended just as if a newline had been typed.
</P><P>
If you want the user to be able to get at the line later, (with
<KBD>C-p</KBD> for example), you must call <CODE>add_history()</CODE> to save the
line away in a <EM>history</EM> list of such lines.
</P><P>
<TABLE><tr><td> </td><td class=example><pre><CODE>add_history (line)</CODE>;
</pre></td></tr></table></P><P>
For full details on the GNU History Library, see the associated manual.
</P><P>
It is preferable to avoid saving empty lines on the history list, since
users rarely have a burning need to reuse a blank line. Here is
a function which usefully replaces the standard <CODE>gets()</CODE> library
function, and has the advantage of no static buffer to overflow:
</P><P>
<TABLE><tr><td> </td><td class=example><pre>/* A static variable for holding the line. */
static char *line_read = (char *)NULL;
/* Read a string, and return a pointer to it.
Returns NULL on EOF. */
char *
rl_gets ()
{
/* If the buffer has already been allocated,
return the memory to the free pool. */
if (line_read)
{
free (line_read);
line_read = (char *)NULL;
}
/* Get a line from the user. */
line_read = readline ("");
/* If the line has any text in it,
save it on the history. */
if (line_read && *line_read)
add_history (line_read);
return (line_read);
}
</pre></td></tr></table></P><P>
This function gives the user the default behaviour of <KBD>TAB</KBD>
completion: completion on file names. If you do not want Readline to
complete on filenames, you can change the binding of the <KBD>TAB</KBD> key
with <CODE>rl_bind_key()</CODE>.
</P><P>
<TABLE><tr><td> </td><td class=example><pre><CODE>int rl_bind_key (int <VAR>key</VAR>, rl_command_func_t *<VAR>function</VAR>);</CODE>
</pre></td></tr></table></P><P>
<CODE>rl_bind_key()</CODE> takes two arguments: <VAR>key</VAR> is the character that
you want to bind, and <VAR>function</VAR> is the address of the function to
call when <VAR>key</VAR> is pressed. Binding <KBD>TAB</KBD> to <CODE>rl_insert()</CODE>
makes <KBD>TAB</KBD> insert itself.
<CODE>rl_bind_key()</CODE> returns non-zero if <VAR>key</VAR> is not a valid
ASCII character code (between 0 and 255).
</P><P>
Thus, to disable the default <KBD>TAB</KBD> behavior, the following suffices:
<TABLE><tr><td> </td><td class=example><pre><CODE>rl_bind_key ('\t', rl_insert);</CODE>
</pre></td></tr></table></P><P>
This code should be executed once at the start of your program; you
might write a function called <CODE>initialize_readline()</CODE> which
performs this and other desired initializations, such as installing
custom completers (see section <A HREF="readline.html#SEC44">2.6 Custom Completers</A>).
</P><P>
<A NAME="Custom Functions"></A>
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<H2> 2.2 Custom Functions </H2>
<!--docid::SEC25::-->
<P>
Readline provides many functions for manipulating the text of
the line, but it isn't possible to anticipate the needs of all
programs. This section describes the various functions and variables
defined within the Readline library which allow a user program to add
customized functionality to Readline.
</P><P>
Before declaring any functions that customize Readline's behavior, or
using any functionality Readline provides in other code, an
application writer should include the file <CODE><readline/readline.h></CODE>
in any file that uses Readline's features. Since some of the definitions
in <CODE>readline.h</CODE> use the <CODE>stdio</CODE> library, the file
<CODE><stdio.h></CODE> should be included before <CODE>readline.h</CODE>.
</P><P>
<CODE>readline.h</CODE> defines a C preprocessor variable that should
be treated as an integer, <CODE>RL_READLINE_VERSION</CODE>, which may
be used to conditionally compile application code depending on
the installed Readline version. The value is a hexadecimal
encoding of the major and minor version numbers of the library,
of the form 0x<VAR>MMmm</VAR>. <VAR>MM</VAR> is the two-digit major
version number; <VAR>mm</VAR> is the two-digit minor version number.
For Readline 4.2, for example, the value of
<CODE>RL_READLINE_VERSION</CODE> would be <CODE>0x0402</CODE>.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC26">2.2.1 Readline Typedefs</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">C declarations to make code readable.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC27">2.2.2 Writing a New Function</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Variables and calling conventions.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="Readline Typedefs"></A>
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<H3> 2.2.1 Readline Typedefs </H3>
<!--docid::SEC26::-->
<P>
For readabilty, we declare a number of new object types, all pointers
to functions.
</P><P>
The reason for declaring these new types is to make it easier to write
code describing pointers to C functions with appropriately prototyped
arguments and return values.
</P><P>
For instance, say we want to declare a variable <VAR>func</VAR> as a pointer
to a function which takes two <CODE>int</CODE> arguments and returns an
<CODE>int</CODE> (this is the type of all of the Readline bindable functions).
Instead of the classic C declaration
</P><P>
<CODE>int (*func)();</CODE>
</P><P>
or the ANSI-C style declaration
</P><P>
<CODE>int (*func)(int, int);</CODE>
</P><P>
we may write
</P><P>
<CODE>rl_command_func_t *func;</CODE>
</P><P>
The full list of function pointer types available is
</P><P>
<DL COMPACT>
<DT><CODE>typedef int rl_command_func_t (int, int);</CODE>
<DD><P>
<DT><CODE>typedef char *rl_compentry_func_t (const char *, int);</CODE>
<DD><P>
<DT><CODE>typedef char **rl_completion_func_t (const char *, int, int);</CODE>
<DD><P>
<DT><CODE>typedef char *rl_quote_func_t (char *, int, char *);</CODE>
<DD><P>
<DT><CODE>typedef char *rl_dequote_func_t (char *, int);</CODE>
<DD><P>
<DT><CODE>typedef int rl_compignore_func_t (char **);</CODE>
<DD><P>
<DT><CODE>typedef void rl_compdisp_func_t (char **, int, int);</CODE>
<DD><P>
<DT><CODE>typedef int rl_hook_func_t (void);</CODE>
<DD><P>
<DT><CODE>typedef int rl_getc_func_t (FILE *);</CODE>
<DD><P>
<DT><CODE>typedef int rl_linebuf_func_t (char *, int);</CODE>
<DD><P>
<DT><CODE>typedef int rl_intfunc_t (int);</CODE>
<DD><DT><CODE>#define rl_ivoidfunc_t rl_hook_func_t</CODE>
<DD><DT><CODE>typedef int rl_icpfunc_t (char *);</CODE>
<DD><DT><CODE>typedef int rl_icppfunc_t (char **);</CODE>
<DD><P>
<DT><CODE>typedef void rl_voidfunc_t (void);</CODE>
<DD><DT><CODE>typedef void rl_vintfunc_t (int);</CODE>
<DD><DT><CODE>typedef void rl_vcpfunc_t (char *);</CODE>
<DD><DT><CODE>typedef void rl_vcppfunc_t (char **);</CODE>
<DD><P>
</DL>
<P>
<A NAME="Function Writing"></A>
<HR SIZE="6">
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</TR></TABLE>
<H3> 2.2.2 Writing a New Function </H3>
<!--docid::SEC27::-->
<P>
In order to write new functions for Readline, you need to know the
calling conventions for keyboard-invoked functions, and the names of the
variables that describe the current state of the line read so far.
</P><P>
The calling sequence for a command <CODE>foo</CODE> looks like
</P><P>
<TABLE><tr><td> </td><td class=example><pre><CODE>int foo (int count, int key)</CODE>
</pre></td></tr></table></P><P>
where <VAR>count</VAR> is the numeric argument (or 1 if defaulted) and
<VAR>key</VAR> is the key that invoked this function.
</P><P>
It is completely up to the function as to what should be done with the
numeric argument. Some functions use it as a repeat count, some
as a flag, and others to choose alternate behavior (refreshing the current
line as opposed to refreshing the screen, for example). Some choose to
ignore it. In general, if a
function uses the numeric argument as a repeat count, it should be able
to do something useful with both negative and positive arguments.
At the very least, it should be aware that it can be passed a
negative argument.
</P><P>
A command function should return 0 if its action completes successfully,
and a non-zero value if some error occurs.
This is the convention obeyed by all of the builtin Readline bindable
command functions.
</P><P>
<A NAME="Readline Variables"></A>
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</TR></TABLE>
<H2> 2.3 Readline Variables </H2>
<!--docid::SEC28::-->
<P>
These variables are available to function writers.
</P><P>
<A NAME="IDX192"></A>
<DL>
<DT><U>Variable:</U> char * <B>rl_line_buffer</B>
<DD>This is the line gathered so far. You are welcome to modify the
contents of the line, but see <A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A>. The
function <CODE>rl_extend_line_buffer</CODE> is available to increase
the memory allocated to <CODE>rl_line_buffer</CODE>.
</DL>
</P><P>
<A NAME="IDX193"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_point</B>
<DD>The offset of the current cursor position in <CODE>rl_line_buffer</CODE>
(the <EM>point</EM>).
</DL>
</P><P>
<A NAME="IDX194"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_end</B>
<DD>The number of characters present in <CODE>rl_line_buffer</CODE>. When
<CODE>rl_point</CODE> is at the end of the line, <CODE>rl_point</CODE> and
<CODE>rl_end</CODE> are equal.
</DL>
</P><P>
<A NAME="IDX195"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_mark</B>
<DD>The <VAR>mark</VAR> (saved position) in the current line. If set, the mark
and point define a <EM>region</EM>.
</DL>
</P><P>
<A NAME="IDX196"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_done</B>
<DD>Setting this to a non-zero value causes Readline to return the current
line immediately.
</DL>
</P><P>
<A NAME="IDX197"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_num_chars_to_read</B>
<DD>Setting this to a positive value before calling <CODE>readline()</CODE> causes
Readline to return after accepting that many characters, rather
than reading up to a character bound to <CODE>accept-line</CODE>.
</DL>
</P><P>
<A NAME="IDX198"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_pending_input</B>
<DD>Setting this to a value makes it the next keystroke read. This is a
way to stuff a single character into the input stream.
</DL>
</P><P>
<A NAME="IDX199"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_dispatching</B>
<DD>Set to a non-zero value if a function is being called from a key binding;
zero otherwise. Application functions can test this to discover whether
they were called directly or by Readline's dispatching mechanism.
</DL>
</P><P>
<A NAME="IDX200"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_erase_empty_line</B>
<DD>Setting this to a non-zero value causes Readline to completely erase
the current line, including any prompt, any time a newline is typed as
the only character on an otherwise-empty line. The cursor is moved to
the beginning of the newly-blank line.
</DL>
</P><P>
<A NAME="IDX201"></A>
<DL>
<DT><U>Variable:</U> char * <B>rl_prompt</B>
<DD>The prompt Readline uses. This is set from the argument to
<CODE>readline()</CODE>, and should not be assigned to directly.
The <CODE>rl_set_prompt()</CODE> function (see section <A HREF="readline.html#SEC35">2.4.6 Redisplay</A>) may
be used to modify the prompt string after calling <CODE>readline()</CODE>.
</DL>
</P><P>
<A NAME="IDX202"></A>
<DL>
<DT><U>Variable:</U> char * <B>rl_display_prompt</B>
<DD>The string displayed as the prompt. This is usually identical to
<VAR>rl_prompt</VAR>, but may be changed temporarily by functions that
use the prompt string as a message area, such as incremental search.
</DL>
</P><P>
<A NAME="IDX203"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_already_prompted</B>
<DD>If an application wishes to display the prompt itself, rather than have
Readline do it the first time <CODE>readline()</CODE> is called, it should set
this variable to a non-zero value after displaying the prompt.
The prompt must also be passed as the argument to <CODE>readline()</CODE> so
the redisplay functions can update the display properly.
The calling application is responsible for managing the value; Readline
never sets it.
</DL>
</P><P>
<A NAME="IDX204"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_library_version</B>
<DD>The version number of this revision of the library.
</DL>
</P><P>
<A NAME="IDX205"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_readline_version</B>
<DD>An integer encoding the current version of the library. The encoding is
of the form 0x<VAR>MMmm</VAR>, where <VAR>MM</VAR> is the two-digit major version
number, and <VAR>mm</VAR> is the two-digit minor version number.
For example, for Readline-4.2, <CODE>rl_readline_version</CODE> would have the
value 0x0402.
</DL>
</P><P>
<A NAME="IDX206"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_gnu_readline_p</B>
<DD>Always set to 1, denoting that this is GNU readline rather than some
emulation.
</DL>
</P><P>
<A NAME="IDX207"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_terminal_name</B>
<DD>The terminal type, used for initialization. If not set by the application,
Readline sets this to the value of the <CODE>TERM</CODE> environment variable
the first time it is called.
</DL>
</P><P>
<A NAME="IDX208"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_readline_name</B>
<DD>This variable is set to a unique name by each application using Readline.
The value allows conditional parsing of the inputrc file
(see section <A HREF="readline.html#SEC11">1.3.2 Conditional Init Constructs</A>).
</DL>
</P><P>
<A NAME="IDX209"></A>
<DL>
<DT><U>Variable:</U> FILE * <B>rl_instream</B>
<DD>The stdio stream from which Readline reads input.
If <CODE>NULL</CODE>, Readline defaults to <VAR>stdin</VAR>.
</DL>
</P><P>
<A NAME="IDX210"></A>
<DL>
<DT><U>Variable:</U> FILE * <B>rl_outstream</B>
<DD>The stdio stream to which Readline performs output.
If <CODE>NULL</CODE>, Readline defaults to <VAR>stdout</VAR>.
</DL>
</P><P>
<A NAME="IDX211"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_prefer_env_winsize</B>
<DD>If non-zero, Readline gives values found in the <CODE>LINES</CODE> and
<CODE>COLUMNS</CODE> environment variables greater precedence than values fetched
from the kernel when computing the screen dimensions.
</DL>
</P><P>
<A NAME="IDX212"></A>
<DL>
<DT><U>Variable:</U> rl_command_func_t * <B>rl_last_func</B>
<DD>The address of the last command function Readline executed. May be used to
test whether or not a function is being executed twice in succession, for
example.
</DL>
</P><P>
<A NAME="IDX213"></A>
<DL>
<DT><U>Variable:</U> rl_hook_func_t * <B>rl_startup_hook</B>
<DD>If non-zero, this is the address of a function to call just
before <CODE>readline</CODE> prints the first prompt.
</DL>
</P><P>
<A NAME="IDX214"></A>
<DL>
<DT><U>Variable:</U> rl_hook_func_t * <B>rl_pre_input_hook</B>
<DD>If non-zero, this is the address of a function to call after
the first prompt has been printed and just before <CODE>readline</CODE>
starts reading input characters.
</DL>
</P><P>
<A NAME="IDX215"></A>
<DL>
<DT><U>Variable:</U> rl_hook_func_t * <B>rl_event_hook</B>
<DD>If non-zero, this is the address of a function to call periodically
when Readline is waiting for terminal input.
By default, this will be called at most ten times a second if there
is no keyboard input.
</DL>
</P><P>
<A NAME="IDX216"></A>
<DL>
<DT><U>Variable:</U> rl_getc_func_t * <B>rl_getc_function</B>
<DD>If non-zero, Readline will call indirectly through this pointer
to get a character from the input stream. By default, it is set to
<CODE>rl_getc</CODE>, the default Readline character input function
(see section <A HREF="readline.html#SEC37">2.4.8 Character Input</A>).
</DL>
</P><P>
<A NAME="IDX217"></A>
<DL>
<DT><U>Variable:</U> rl_voidfunc_t * <B>rl_redisplay_function</B>
<DD>If non-zero, Readline will call indirectly through this pointer
to update the display with the current contents of the editing buffer.
By default, it is set to <CODE>rl_redisplay</CODE>, the default Readline
redisplay function (see section <A HREF="readline.html#SEC35">2.4.6 Redisplay</A>).
</DL>
</P><P>
<A NAME="IDX218"></A>
<DL>
<DT><U>Variable:</U> rl_vintfunc_t * <B>rl_prep_term_function</B>
<DD>If non-zero, Readline will call indirectly through this pointer
to initialize the terminal. The function takes a single argument, an
<CODE>int</CODE> flag that says whether or not to use eight-bit characters.
By default, this is set to <CODE>rl_prep_terminal</CODE>
(see section <A HREF="readline.html#SEC38">2.4.9 Terminal Management</A>).
</DL>
</P><P>
<A NAME="IDX219"></A>
<DL>
<DT><U>Variable:</U> rl_voidfunc_t * <B>rl_deprep_term_function</B>
<DD>If non-zero, Readline will call indirectly through this pointer
to reset the terminal. This function should undo the effects of
<CODE>rl_prep_term_function</CODE>.
By default, this is set to <CODE>rl_deprep_terminal</CODE>
(see section <A HREF="readline.html#SEC38">2.4.9 Terminal Management</A>).
</DL>
</P><P>
<A NAME="IDX220"></A>
<DL>
<DT><U>Variable:</U> Keymap <B>rl_executing_keymap</B>
<DD>This variable is set to the keymap (see section <A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A>) in which the
currently executing readline function was found.
</DL>
</P><P>
<A NAME="IDX221"></A>
<DL>
<DT><U>Variable:</U> Keymap <B>rl_binding_keymap</B>
<DD>This variable is set to the keymap (see section <A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A>) in which the
last key binding occurred.
</DL>
</P><P>
<A NAME="IDX222"></A>
<DL>
<DT><U>Variable:</U> char * <B>rl_executing_macro</B>
<DD>This variable is set to the text of any currently-executing macro.
</DL>
</P><P>
<A NAME="IDX223"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_readline_state</B>
<DD>A variable with bit values that encapsulate the current Readline state.
A bit is set with the <CODE>RL_SETSTATE</CODE> macro, and unset with the
<CODE>RL_UNSETSTATE</CODE> macro. Use the <CODE>RL_ISSTATE</CODE> macro to test
whether a particular state bit is set. Current state bits include:
</P><P>
<DL COMPACT>
<DT><CODE>RL_STATE_NONE</CODE>
<DD>Readline has not yet been called, nor has it begun to intialize.
<DT><CODE>RL_STATE_INITIALIZING</CODE>
<DD>Readline is initializing its internal data structures.
<DT><CODE>RL_STATE_INITIALIZED</CODE>
<DD>Readline has completed its initialization.
<DT><CODE>RL_STATE_TERMPREPPED</CODE>
<DD>Readline has modified the terminal modes to do its own input and redisplay.
<DT><CODE>RL_STATE_READCMD</CODE>
<DD>Readline is reading a command from the keyboard.
<DT><CODE>RL_STATE_METANEXT</CODE>
<DD>Readline is reading more input after reading the meta-prefix character.
<DT><CODE>RL_STATE_DISPATCHING</CODE>
<DD>Readline is dispatching to a command.
<DT><CODE>RL_STATE_MOREINPUT</CODE>
<DD>Readline is reading more input while executing an editing command.
<DT><CODE>RL_STATE_ISEARCH</CODE>
<DD>Readline is performing an incremental history search.
<DT><CODE>RL_STATE_NSEARCH</CODE>
<DD>Readline is performing a non-incremental history search.
<DT><CODE>RL_STATE_SEARCH</CODE>
<DD>Readline is searching backward or forward through the history for a string.
<DT><CODE>RL_STATE_NUMERICARG</CODE>
<DD>Readline is reading a numeric argument.
<DT><CODE>RL_STATE_MACROINPUT</CODE>
<DD>Readline is currently getting its input from a previously-defined keyboard
macro.
<DT><CODE>RL_STATE_MACRODEF</CODE>
<DD>Readline is currently reading characters defining a keyboard macro.
<DT><CODE>RL_STATE_OVERWRITE</CODE>
<DD>Readline is in overwrite mode.
<DT><CODE>RL_STATE_COMPLETING</CODE>
<DD>Readline is performing word completion.
<DT><CODE>RL_STATE_SIGHANDLER</CODE>
<DD>Readline is currently executing the readline signal handler.
<DT><CODE>RL_STATE_UNDOING</CODE>
<DD>Readline is performing an undo.
<DT><CODE>RL_STATE_INPUTPENDING</CODE>
<DD>Readline has input pending due to a call to <CODE>rl_execute_next()</CODE>.
<DT><CODE>RL_STATE_TTYCSAVED</CODE>
<DD>Readline has saved the values of the terminal's special characters.
<DT><CODE>RL_STATE_CALLBACK</CODE>
<DD>Readline is currently using the alternate (callback) interface
(see section <A HREF="readline.html#SEC41">2.4.12 Alternate Interface</A>).
<DT><CODE>RL_STATE_VIMOTION</CODE>
<DD>Readline is reading the argument to a vi-mode "motion" command.
<DT><CODE>RL_STATE_MULTIKEY</CODE>
<DD>Readline is reading a multiple-keystroke command.
<DT><CODE>RL_STATE_VICMDONCE</CODE>
<DD>Readline has entered vi command (movement) mode at least one time during
the current call to <CODE>readline()</CODE>.
<DT><CODE>RL_STATE_DONE</CODE>
<DD>Readline has read a key sequence bound to <CODE>accept-line</CODE>
and is about to return the line to the caller.
</DL>
<P>
</DL>
</P><P>
<A NAME="IDX224"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_explicit_arg</B>
<DD>Set to a non-zero value if an explicit numeric argument was specified by
the user. Only valid in a bindable command function.
</DL>
</P><P>
<A NAME="IDX225"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_numeric_arg</B>
<DD>Set to the value of any numeric argument explicitly specified by the user
before executing the current Readline function. Only valid in a bindable
command function.
</DL>
</P><P>
<A NAME="IDX226"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_editing_mode</B>
<DD>Set to a value denoting Readline's current editing mode. A value of
<VAR>1</VAR> means Readline is currently in emacs mode; <VAR>0</VAR>
means that vi mode is active.
</DL>
</P><P>
<A NAME="Readline Convenience Functions"></A>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H2> 2.4 Readline Convenience Functions </H2>
<!--docid::SEC29::-->
<P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC30">2.4.1 Naming a Function</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">How to give a function you write a name.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Making keymaps.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Changing Keymaps.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Translate function names to
key sequences.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">How to make your functions undoable.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions to control line display.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC36">2.4.7 Modifying Text</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions to modify <CODE>rl_line_buffer</CODE>.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions to read keyboard input.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC38">2.4.9 Terminal Management</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions to manage terminal settings.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Generally useful functions and hooks.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions that don't fall into any category.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC41">2.4.12 Alternate Interface</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Using Readline in a `callback' fashion.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC42">2.4.13 A Readline Example</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">An example Readline function.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="Function Naming"></A>
<HR SIZE="6">
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<H3> 2.4.1 Naming a Function </H3>
<!--docid::SEC30::-->
<P>
The user can dynamically change the bindings of keys while using
Readline. This is done by representing the function with a descriptive
name. The user is able to type the descriptive name when referring to
the function. Thus, in an init file, one might find
</P><P>
<TABLE><tr><td> </td><td class=example><pre>Meta-Rubout: backward-kill-word
</pre></td></tr></table></P><P>
This binds the keystroke <KBD>Meta-Rubout</KBD> to the function
<EM>descriptively</EM> named <CODE>backward-kill-word</CODE>. You, as the
programmer, should bind the functions you write to descriptive names as
well. Readline provides a function for doing that:
</P><P>
<A NAME="IDX227"></A>
<DL>
<DT><U>Function:</U> int <B>rl_add_defun</B> <I>(const char *name, rl_command_func_t *function, int key)</I>
<DD>Add <VAR>name</VAR> to the list of named functions. Make <VAR>function</VAR> be
the function that gets called. If <VAR>key</VAR> is not -1, then bind it to
<VAR>function</VAR> using <CODE>rl_bind_key()</CODE>.
</DL>
</P><P>
Using this function alone is sufficient for most applications.
It is the recommended way to add a few functions to the default
functions that Readline has built in.
If you need to do something other than adding a function to Readline,
you may need to use the underlying functions described below.
</P><P>
<A NAME="Keymaps"></A>
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<H3> 2.4.2 Selecting a Keymap </H3>
<!--docid::SEC31::-->
<P>
Key bindings take place on a <EM>keymap</EM>. The keymap is the
association between the keys that the user types and the functions that
get run. You can make your own keymaps, copy existing keymaps, and tell
Readline which keymap to use.
</P><P>
<A NAME="IDX228"></A>
<DL>
<DT><U>Function:</U> Keymap <B>rl_make_bare_keymap</B> <I>(void)</I>
<DD>Returns a new, empty keymap. The space for the keymap is allocated with
<CODE>malloc()</CODE>; the caller should free it by calling
<CODE>rl_free_keymap()</CODE> when done.
</DL>
</P><P>
<A NAME="IDX229"></A>
<DL>
<DT><U>Function:</U> Keymap <B>rl_copy_keymap</B> <I>(Keymap map)</I>
<DD>Return a new keymap which is a copy of <VAR>map</VAR>.
</DL>
</P><P>
<A NAME="IDX230"></A>
<DL>
<DT><U>Function:</U> Keymap <B>rl_make_keymap</B> <I>(void)</I>
<DD>Return a new keymap with the printing characters bound to rl_insert,
the lowercase Meta characters bound to run their equivalents, and
the Meta digits bound to produce numeric arguments.
</DL>
</P><P>
<A NAME="IDX231"></A>
<DL>
<DT><U>Function:</U> void <B>rl_discard_keymap</B> <I>(Keymap keymap)</I>
<DD>Free the storage associated with the data in <VAR>keymap</VAR>.
The caller should free <VAR>keymap</VAR>.
</DL>
</P><P>
<A NAME="IDX232"></A>
<DL>
<DT><U>Function:</U> void <B>rl_free_keymap</B> <I>(Keymap keymap)</I>
<DD>Free all storage associated with <VAR>keymap</VAR>. This calls
<CODE>rl_discard_keymap</CODE> to free subordindate keymaps and macros.
</DL>
</P><P>
Readline has several internal keymaps. These functions allow you to
change which keymap is active.
</P><P>
<A NAME="IDX233"></A>
<DL>
<DT><U>Function:</U> Keymap <B>rl_get_keymap</B> <I>(void)</I>
<DD>Returns the currently active keymap.
</DL>
</P><P>
<A NAME="IDX234"></A>
<DL>
<DT><U>Function:</U> void <B>rl_set_keymap</B> <I>(Keymap keymap)</I>
<DD>Makes <VAR>keymap</VAR> the currently active keymap.
</DL>
</P><P>
<A NAME="IDX235"></A>
<DL>
<DT><U>Function:</U> Keymap <B>rl_get_keymap_by_name</B> <I>(const char *name)</I>
<DD>Return the keymap matching <VAR>name</VAR>. <VAR>name</VAR> is one which would
be supplied in a <CODE>set keymap</CODE> inputrc line (see section <A HREF="readline.html#SEC9">1.3 Readline Init File</A>).
</DL>
</P><P>
<A NAME="IDX236"></A>
<DL>
<DT><U>Function:</U> char * <B>rl_get_keymap_name</B> <I>(Keymap keymap)</I>
<DD>Return the name matching <VAR>keymap</VAR>. <VAR>name</VAR> is one which would
be supplied in a <CODE>set keymap</CODE> inputrc line (see section <A HREF="readline.html#SEC9">1.3 Readline Init File</A>).
</DL>
</P><P>
<A NAME="Binding Keys"></A>
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<H3> 2.4.3 Binding Keys </H3>
<!--docid::SEC32::-->
<P>
Key sequences are associate with functions through the keymap.
Readline has several internal keymaps: <CODE>emacs_standard_keymap</CODE>,
<CODE>emacs_meta_keymap</CODE>, <CODE>emacs_ctlx_keymap</CODE>,
<CODE>vi_movement_keymap</CODE>, and <CODE>vi_insertion_keymap</CODE>.
<CODE>emacs_standard_keymap</CODE> is the default, and the examples in
this manual assume that.
</P><P>
Since <CODE>readline()</CODE> installs a set of default key bindings the first
time it is called, there is always the danger that a custom binding
installed before the first call to <CODE>readline()</CODE> will be overridden.
An alternate mechanism is to install custom key bindings in an
initialization function assigned to the <CODE>rl_startup_hook</CODE> variable
(see section <A HREF="readline.html#SEC28">2.3 Readline Variables</A>).
</P><P>
These functions manage key bindings.
</P><P>
<A NAME="IDX237"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_key</B> <I>(int key, rl_command_func_t *function)</I>
<DD>Binds <VAR>key</VAR> to <VAR>function</VAR> in the currently active keymap.
Returns non-zero in the case of an invalid <VAR>key</VAR>.
</DL>
</P><P>
<A NAME="IDX238"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_key_in_map</B> <I>(int key, rl_command_func_t *function, Keymap map)</I>
<DD>Bind <VAR>key</VAR> to <VAR>function</VAR> in <VAR>map</VAR>.
Returns non-zero in the case of an invalid <VAR>key</VAR>.
</DL>
</P><P>
<A NAME="IDX239"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_key_if_unbound</B> <I>(int key, rl_command_func_t *function)</I>
<DD>Binds <VAR>key</VAR> to <VAR>function</VAR> if it is not already bound in the
currently active keymap.
Returns non-zero in the case of an invalid <VAR>key</VAR> or if <VAR>key</VAR> is
already bound.
</DL>
</P><P>
<A NAME="IDX240"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_key_if_unbound_in_map</B> <I>(int key, rl_command_func_t *function, Keymap map)</I>
<DD>Binds <VAR>key</VAR> to <VAR>function</VAR> if it is not already bound in <VAR>map</VAR>.
Returns non-zero in the case of an invalid <VAR>key</VAR> or if <VAR>key</VAR> is
already bound.
</DL>
</P><P>
<A NAME="IDX241"></A>
<DL>
<DT><U>Function:</U> int <B>rl_unbind_key</B> <I>(int key)</I>
<DD>Bind <VAR>key</VAR> to the null function in the currently active keymap.
Returns non-zero in case of error.
</DL>
</P><P>
<A NAME="IDX242"></A>
<DL>
<DT><U>Function:</U> int <B>rl_unbind_key_in_map</B> <I>(int key, Keymap map)</I>
<DD>Bind <VAR>key</VAR> to the null function in <VAR>map</VAR>.
Returns non-zero in case of error.
</DL>
</P><P>
<A NAME="IDX243"></A>
<DL>
<DT><U>Function:</U> int <B>rl_unbind_function_in_map</B> <I>(rl_command_func_t *function, Keymap map)</I>
<DD>Unbind all keys that execute <VAR>function</VAR> in <VAR>map</VAR>.
</DL>
</P><P>
<A NAME="IDX244"></A>
<DL>
<DT><U>Function:</U> int <B>rl_unbind_command_in_map</B> <I>(const char *command, Keymap map)</I>
<DD>Unbind all keys that are bound to <VAR>command</VAR> in <VAR>map</VAR>.
</DL>
</P><P>
<A NAME="IDX245"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_keyseq</B> <I>(const char *keyseq, rl_command_func_t *function)</I>
<DD>Bind the key sequence represented by the string <VAR>keyseq</VAR> to the function
<VAR>function</VAR>, beginning in the current keymap.
This makes new keymaps as necessary.
The return value is non-zero if <VAR>keyseq</VAR> is invalid.
</DL>
</P><P>
<A NAME="IDX246"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_keyseq_in_map</B> <I>(const char *keyseq, rl_command_func_t *function, Keymap map)</I>
<DD>Bind the key sequence represented by the string <VAR>keyseq</VAR> to the function
<VAR>function</VAR>. This makes new keymaps as necessary.
Initial bindings are performed in <VAR>map</VAR>.
The return value is non-zero if <VAR>keyseq</VAR> is invalid.
</DL>
</P><P>
<A NAME="IDX247"></A>
<DL>
<DT><U>Function:</U> int <B>rl_set_key</B> <I>(const char *keyseq, rl_command_func_t *function, Keymap map)</I>
<DD>Equivalent to <CODE>rl_bind_keyseq_in_map</CODE>.
</DL>
</P><P>
<A NAME="IDX248"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_keyseq_if_unbound</B> <I>(const char *keyseq, rl_command_func_t *function)</I>
<DD>Binds <VAR>keyseq</VAR> to <VAR>function</VAR> if it is not already bound in the
currently active keymap.
Returns non-zero in the case of an invalid <VAR>keyseq</VAR> or if <VAR>keyseq</VAR> is
already bound.
</DL>
</P><P>
<A NAME="IDX249"></A>
<DL>
<DT><U>Function:</U> int <B>rl_bind_keyseq_if_unbound_in_map</B> <I>(const char *keyseq, rl_command_func_t *function, Keymap map)</I>
<DD>Binds <VAR>keyseq</VAR> to <VAR>function</VAR> if it is not already bound in <VAR>map</VAR>.
Returns non-zero in the case of an invalid <VAR>keyseq</VAR> or if <VAR>keyseq</VAR> is
already bound.
</DL>
</P><P>
<A NAME="IDX250"></A>
<DL>
<DT><U>Function:</U> int <B>rl_generic_bind</B> <I>(int type, const char *keyseq, char *data, Keymap map)</I>
<DD>Bind the key sequence represented by the string <VAR>keyseq</VAR> to the arbitrary
pointer <VAR>data</VAR>. <VAR>type</VAR> says what kind of data is pointed to by
<VAR>data</VAR>; this can be a function (<CODE>ISFUNC</CODE>), a macro
(<CODE>ISMACR</CODE>), or a keymap (<CODE>ISKMAP</CODE>). This makes new keymaps as
necessary. The initial keymap in which to do bindings is <VAR>map</VAR>.
</DL>
</P><P>
<A NAME="IDX251"></A>
<DL>
<DT><U>Function:</U> int <B>rl_parse_and_bind</B> <I>(char *line)</I>
<DD>Parse <VAR>line</VAR> as if it had been read from the <CODE>inputrc</CODE> file and
perform any key bindings and variable assignments found
(see section <A HREF="readline.html#SEC9">1.3 Readline Init File</A>).
</DL>
</P><P>
<A NAME="IDX252"></A>
<DL>
<DT><U>Function:</U> int <B>rl_read_init_file</B> <I>(const char *filename)</I>
<DD>Read keybindings and variable assignments from <VAR>filename</VAR>
(see section <A HREF="readline.html#SEC9">1.3 Readline Init File</A>).
</DL>
</P><P>
<A NAME="Associating Function Names and Bindings"></A>
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<H3> 2.4.4 Associating Function Names and Bindings </H3>
<!--docid::SEC33::-->
<P>
These functions allow you to find out what keys invoke named functions
and the functions invoked by a particular key sequence. You may also
associate a new function name with an arbitrary function.
</P><P>
<A NAME="IDX253"></A>
<DL>
<DT><U>Function:</U> rl_command_func_t * <B>rl_named_function</B> <I>(const char *name)</I>
<DD>Return the function with name <VAR>name</VAR>.
</DL>
</P><P>
<A NAME="IDX254"></A>
<DL>
<DT><U>Function:</U> rl_command_func_t * <B>rl_function_of_keyseq</B> <I>(const char *keyseq, Keymap map, int *type)</I>
<DD>Return the function invoked by <VAR>keyseq</VAR> in keymap <VAR>map</VAR>.
If <VAR>map</VAR> is <CODE>NULL</CODE>, the current keymap is used. If <VAR>type</VAR> is
not <CODE>NULL</CODE>, the type of the object is returned in the <CODE>int</CODE> variable
it points to (one of <CODE>ISFUNC</CODE>, <CODE>ISKMAP</CODE>, or <CODE>ISMACR</CODE>).
</DL>
</P><P>
<A NAME="IDX255"></A>
<DL>
<DT><U>Function:</U> char ** <B>rl_invoking_keyseqs</B> <I>(rl_command_func_t *function)</I>
<DD>Return an array of strings representing the key sequences used to
invoke <VAR>function</VAR> in the current keymap.
</DL>
</P><P>
<A NAME="IDX256"></A>
<DL>
<DT><U>Function:</U> char ** <B>rl_invoking_keyseqs_in_map</B> <I>(rl_command_func_t *function, Keymap map)</I>
<DD>Return an array of strings representing the key sequences used to
invoke <VAR>function</VAR> in the keymap <VAR>map</VAR>.
</DL>
</P><P>
<A NAME="IDX257"></A>
<DL>
<DT><U>Function:</U> void <B>rl_function_dumper</B> <I>(int readable)</I>
<DD>Print the readline function names and the key sequences currently
bound to them to <CODE>rl_outstream</CODE>. If <VAR>readable</VAR> is non-zero,
the list is formatted in such a way that it can be made part of an
<CODE>inputrc</CODE> file and re-read.
</DL>
</P><P>
<A NAME="IDX258"></A>
<DL>
<DT><U>Function:</U> void <B>rl_list_funmap_names</B> <I>(void)</I>
<DD>Print the names of all bindable Readline functions to <CODE>rl_outstream</CODE>.
</DL>
</P><P>
<A NAME="IDX259"></A>
<DL>
<DT><U>Function:</U> const char ** <B>rl_funmap_names</B> <I>(void)</I>
<DD>Return a NULL terminated array of known function names. The array is
sorted. The array itself is allocated, but not the strings inside. You
should free the array, but not the pointers, using <CODE>free</CODE> or
<CODE>rl_free</CODE> when you are done.
</DL>
</P><P>
<A NAME="IDX260"></A>
<DL>
<DT><U>Function:</U> int <B>rl_add_funmap_entry</B> <I>(const char *name, rl_command_func_t *function)</I>
<DD>Add <VAR>name</VAR> to the list of bindable Readline command names, and make
<VAR>function</VAR> the function to be called when <VAR>name</VAR> is invoked.
</DL>
</P><P>
<A NAME="Allowing Undoing"></A>
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<H3> 2.4.5 Allowing Undoing </H3>
<!--docid::SEC34::-->
<P>
Supporting the undo command is a painless thing, and makes your
functions much more useful. It is certainly easy to try
something if you know you can undo it.
</P><P>
If your function simply inserts text once, or deletes text once, and
uses <CODE>rl_insert_text()</CODE> or <CODE>rl_delete_text()</CODE> to do it, then
undoing is already done for you automatically.
</P><P>
If you do multiple insertions or multiple deletions, or any combination
of these operations, you should group them together into one operation.
This is done with <CODE>rl_begin_undo_group()</CODE> and
<CODE>rl_end_undo_group()</CODE>.
</P><P>
The types of events that can be undone are:
</P><P>
<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
</FONT></pre></td></tr></table></P><P>
Notice that <CODE>UNDO_DELETE</CODE> means to insert some text, and
<CODE>UNDO_INSERT</CODE> means to delete some text. That is, the undo code
tells what to undo, not how to undo it. <CODE>UNDO_BEGIN</CODE> and
<CODE>UNDO_END</CODE> are tags added by <CODE>rl_begin_undo_group()</CODE> and
<CODE>rl_end_undo_group()</CODE>.
</P><P>
<A NAME="IDX261"></A>
<DL>
<DT><U>Function:</U> int <B>rl_begin_undo_group</B> <I>(void)</I>
<DD>Begins saving undo information in a group construct. The undo
information usually comes from calls to <CODE>rl_insert_text()</CODE> and
<CODE>rl_delete_text()</CODE>, but could be the result of calls to
<CODE>rl_add_undo()</CODE>.
</DL>
</P><P>
<A NAME="IDX262"></A>
<DL>
<DT><U>Function:</U> int <B>rl_end_undo_group</B> <I>(void)</I>
<DD>Closes the current undo group started with <CODE>rl_begin_undo_group
()</CODE>. There should be one call to <CODE>rl_end_undo_group()</CODE>
for each call to <CODE>rl_begin_undo_group()</CODE>.
</DL>
</P><P>
<A NAME="IDX263"></A>
<DL>
<DT><U>Function:</U> void <B>rl_add_undo</B> <I>(enum undo_code what, int start, int end, char *text)</I>
<DD>Remember how to undo an event (according to <VAR>what</VAR>). The affected
text runs from <VAR>start</VAR> to <VAR>end</VAR>, and encompasses <VAR>text</VAR>.
</DL>
</P><P>
<A NAME="IDX264"></A>
<DL>
<DT><U>Function:</U> void <B>rl_free_undo_list</B> <I>(void)</I>
<DD>Free the existing undo list.
</DL>
</P><P>
<A NAME="IDX265"></A>
<DL>
<DT><U>Function:</U> int <B>rl_do_undo</B> <I>(void)</I>
<DD>Undo the first thing on the undo list. Returns <CODE>0</CODE> if there was
nothing to undo, non-zero if something was undone.
</DL>
</P><P>
Finally, if you neither insert nor delete text, but directly modify the
existing text (e.g., change its case), call <CODE>rl_modifying()</CODE>
once, just before you modify the text. You must supply the indices of
the text range that you are going to modify.
</P><P>
<A NAME="IDX266"></A>
<DL>
<DT><U>Function:</U> int <B>rl_modifying</B> <I>(int start, int end)</I>
<DD>Tell Readline to save the text between <VAR>start</VAR> and <VAR>end</VAR> as a
single undo unit. It is assumed that you will subsequently modify
that text.
</DL>
</P><P>
<A NAME="Redisplay"></A>
<HR SIZE="6">
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</TR></TABLE>
<H3> 2.4.6 Redisplay </H3>
<!--docid::SEC35::-->
<P>
<A NAME="IDX267"></A>
<DL>
<DT><U>Function:</U> void <B>rl_redisplay</B> <I>(void)</I>
<DD>Change what's displayed on the screen to reflect the current contents
of <CODE>rl_line_buffer</CODE>.
</DL>
</P><P>
<A NAME="IDX268"></A>
<DL>
<DT><U>Function:</U> int <B>rl_forced_update_display</B> <I>(void)</I>
<DD>Force the line to be updated and redisplayed, whether or not
Readline thinks the screen display is correct.
</DL>
</P><P>
<A NAME="IDX269"></A>
<DL>
<DT><U>Function:</U> int <B>rl_on_new_line</B> <I>(void)</I>
<DD>Tell the update functions that we have moved onto a new (empty) line,
usually after ouputting a newline.
</DL>
</P><P>
<A NAME="IDX270"></A>
<DL>
<DT><U>Function:</U> int <B>rl_on_new_line_with_prompt</B> <I>(void)</I>
<DD>Tell the update functions that we have moved onto a new line, with
<VAR>rl_prompt</VAR> already displayed.
This could be used by applications that want to output the prompt string
themselves, but still need Readline to know the prompt string length for
redisplay.
It should be used after setting <VAR>rl_already_prompted</VAR>.
</DL>
</P><P>
<A NAME="IDX271"></A>
<DL>
<DT><U>Function:</U> int <B>rl_reset_line_state</B> <I>(void)</I>
<DD>Reset the display state to a clean state and redisplay the current line
starting on a new line.
</DL>
</P><P>
<A NAME="IDX272"></A>
<DL>
<DT><U>Function:</U> int <B>rl_crlf</B> <I>(void)</I>
<DD>Move the cursor to the start of the next screen line.
</DL>
</P><P>
<A NAME="IDX273"></A>
<DL>
<DT><U>Function:</U> int <B>rl_show_char</B> <I>(int c)</I>
<DD>Display character <VAR>c</VAR> on <CODE>rl_outstream</CODE>.
If Readline has not been set to display meta characters directly, this
will convert meta characters to a meta-prefixed key sequence.
This is intended for use by applications which wish to do their own
redisplay.
</DL>
</P><P>
<A NAME="IDX274"></A>
<DL>
<DT><U>Function:</U> int <B>rl_message</B> <I>(const char *, <small>...</small>)</I>
<DD>The arguments are a format string as would be supplied to <CODE>printf</CODE>,
possibly containing conversion specifications such as <SAMP>`%d'</SAMP>, and
any additional arguments necessary to satisfy the conversion specifications.
The resulting string is displayed in the <EM>echo area</EM>. The echo area
is also used to display numeric arguments and search strings.
You should call <CODE>rl_save_prompt</CODE> to save the prompt information
before calling this function.
</DL>
</P><P>
<A NAME="IDX275"></A>
<DL>
<DT><U>Function:</U> int <B>rl_clear_message</B> <I>(void)</I>
<DD>Clear the message in the echo area. If the prompt was saved with a call to
<CODE>rl_save_prompt</CODE> before the last call to <CODE>rl_message</CODE>,
call <CODE>rl_restore_prompt</CODE> before calling this function.
</DL>
</P><P>
<A NAME="IDX276"></A>
<DL>
<DT><U>Function:</U> void <B>rl_save_prompt</B> <I>(void)</I>
<DD>Save the local Readline prompt display state in preparation for
displaying a new message in the message area with <CODE>rl_message()</CODE>.
</DL>
</P><P>
<A NAME="IDX277"></A>
<DL>
<DT><U>Function:</U> void <B>rl_restore_prompt</B> <I>(void)</I>
<DD>Restore the local Readline prompt display state saved by the most
recent call to <CODE>rl_save_prompt</CODE>.
if <CODE>rl_save_prompt</CODE> was called to save the prompt before a call
to <CODE>rl_message</CODE>, this function should be called before the
corresponding call to <CODE>rl_clear_message</CODE>.
</DL>
</P><P>
<A NAME="IDX278"></A>
<DL>
<DT><U>Function:</U> int <B>rl_expand_prompt</B> <I>(char *prompt)</I>
<DD>Expand any special character sequences in <VAR>prompt</VAR> and set up the
local Readline prompt redisplay variables.
This function is called by <CODE>readline()</CODE>. It may also be called to
expand the primary prompt if the <CODE>rl_on_new_line_with_prompt()</CODE>
function or <CODE>rl_already_prompted</CODE> variable is used.
It returns the number of visible characters on the last line of the
(possibly multi-line) prompt.
Applications may indicate that the prompt contains characters that take
up no physical screen space when displayed by bracketing a sequence of
such characters with the special markers <CODE>RL_PROMPT_START_IGNORE</CODE>
and <CODE>RL_PROMPT_END_IGNORE</CODE> (declared in <TT>`readline.h'</TT>. This may
be used to embed terminal-specific escape sequences in prompts.
</DL>
</P><P>
<A NAME="IDX279"></A>
<DL>
<DT><U>Function:</U> int <B>rl_set_prompt</B> <I>(const char *prompt)</I>
<DD>Make Readline use <VAR>prompt</VAR> for subsequent redisplay. This calls
<CODE>rl_expand_prompt()</CODE> to expand the prompt and sets <CODE>rl_prompt</CODE>
to the result.
</DL>
</P><P>
<A NAME="Modifying Text"></A>
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</TR></TABLE>
<H3> 2.4.7 Modifying Text </H3>
<!--docid::SEC36::-->
<P>
<A NAME="IDX280"></A>
<DL>
<DT><U>Function:</U> int <B>rl_insert_text</B> <I>(const char *text)</I>
<DD>Insert <VAR>text</VAR> into the line at the current cursor position.
Returns the number of characters inserted.
</DL>
</P><P>
<A NAME="IDX281"></A>
<DL>
<DT><U>Function:</U> int <B>rl_delete_text</B> <I>(int start, int end)</I>
<DD>Delete the text between <VAR>start</VAR> and <VAR>end</VAR> in the current line.
Returns the number of characters deleted.
</DL>
</P><P>
<A NAME="IDX282"></A>
<DL>
<DT><U>Function:</U> char * <B>rl_copy_text</B> <I>(int start, int end)</I>
<DD>Return a copy of the text between <VAR>start</VAR> and <VAR>end</VAR> in
the current line.
</DL>
</P><P>
<A NAME="IDX283"></A>
<DL>
<DT><U>Function:</U> int <B>rl_kill_text</B> <I>(int start, int end)</I>
<DD>Copy the text between <VAR>start</VAR> and <VAR>end</VAR> in the current line
to the kill ring, appending or prepending to the last kill if the
last command was a kill command. The text is deleted.
If <VAR>start</VAR> is less than <VAR>end</VAR>,
the text is appended, otherwise prepended. If the last command was
not a kill, a new kill ring slot is used.
</DL>
</P><P>
<A NAME="IDX284"></A>
<DL>
<DT><U>Function:</U> int <B>rl_push_macro_input</B> <I>(char *macro)</I>
<DD>Cause <VAR>macro</VAR> to be inserted into the line, as if it had been invoked
by a key bound to a macro. Not especially useful; use
<CODE>rl_insert_text()</CODE> instead.
</DL>
</P><P>
<A NAME="Character Input"></A>
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</TR></TABLE>
<H3> 2.4.8 Character Input </H3>
<!--docid::SEC37::-->
<P>
<A NAME="IDX285"></A>
<DL>
<DT><U>Function:</U> int <B>rl_read_key</B> <I>(void)</I>
<DD>Return the next character available from Readline's current input stream.
This handles input inserted into
the input stream via <VAR>rl_pending_input</VAR> (see section <A HREF="readline.html#SEC28">2.3 Readline Variables</A>)
and <CODE>rl_stuff_char()</CODE>, macros, and characters read from the keyboard.
While waiting for input, this function will call any function assigned to
the <CODE>rl_event_hook</CODE> variable.
</DL>
</P><P>
<A NAME="IDX286"></A>
<DL>
<DT><U>Function:</U> int <B>rl_getc</B> <I>(FILE *stream)</I>
<DD>Return the next character available from <VAR>stream</VAR>, which is assumed to
be the keyboard.
</DL>
</P><P>
<A NAME="IDX287"></A>
<DL>
<DT><U>Function:</U> int <B>rl_stuff_char</B> <I>(int c)</I>
<DD>Insert <VAR>c</VAR> into the Readline input stream. It will be "read"
before Readline attempts to read characters from the terminal with
<CODE>rl_read_key()</CODE>. Up to 512 characters may be pushed back.
<CODE>rl_stuff_char</CODE> returns 1 if the character was successfully inserted;
0 otherwise.
</DL>
</P><P>
<A NAME="IDX288"></A>
<DL>
<DT><U>Function:</U> int <B>rl_execute_next</B> <I>(int c)</I>
<DD>Make <VAR>c</VAR> be the next command to be executed when <CODE>rl_read_key()</CODE>
is called. This sets <VAR>rl_pending_input</VAR>.
</DL>
</P><P>
<A NAME="IDX289"></A>
<DL>
<DT><U>Function:</U> int <B>rl_clear_pending_input</B> <I>(void)</I>
<DD>Unset <VAR>rl_pending_input</VAR>, effectively negating the effect of any
previous call to <CODE>rl_execute_next()</CODE>. This works only if the
pending input has not already been read with <CODE>rl_read_key()</CODE>.
</DL>
</P><P>
<A NAME="IDX290"></A>
<DL>
<DT><U>Function:</U> int <B>rl_set_keyboard_input_timeout</B> <I>(int u)</I>
<DD>While waiting for keyboard input in <CODE>rl_read_key()</CODE>, Readline will
wait for <VAR>u</VAR> microseconds for input before calling any function
assigned to <CODE>rl_event_hook</CODE>. <VAR>u</VAR> must be greater than or equal
to zero (a zero-length timeout is equivalent to a poll).
The default waiting period is one-tenth of a second.
Returns the old timeout value.
</DL>
</P><P>
<A NAME="Terminal Management"></A>
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</TR></TABLE>
<H3> 2.4.9 Terminal Management </H3>
<!--docid::SEC38::-->
<P>
<A NAME="IDX291"></A>
<DL>
<DT><U>Function:</U> void <B>rl_prep_terminal</B> <I>(int meta_flag)</I>
<DD>Modify the terminal settings for Readline's use, so <CODE>readline()</CODE>
can read a single character at a time from the keyboard.
The <VAR>meta_flag</VAR> argument should be non-zero if Readline should
read eight-bit input.
</DL>
</P><P>
<A NAME="IDX292"></A>
<DL>
<DT><U>Function:</U> void <B>rl_deprep_terminal</B> <I>(void)</I>
<DD>Undo the effects of <CODE>rl_prep_terminal()</CODE>, leaving the terminal in
the state in which it was before the most recent call to
<CODE>rl_prep_terminal()</CODE>.
</DL>
</P><P>
<A NAME="IDX293"></A>
<DL>
<DT><U>Function:</U> void <B>rl_tty_set_default_bindings</B> <I>(Keymap kmap)</I>
<DD>Read the operating system's terminal editing characters (as would be
displayed by <CODE>stty</CODE>) to their Readline equivalents.
The bindings are performed in <VAR>kmap</VAR>.
</DL>
</P><P>
<A NAME="IDX294"></A>
<DL>
<DT><U>Function:</U> void <B>rl_tty_unset_default_bindings</B> <I>(Keymap kmap)</I>
<DD>Reset the bindings manipulated by <CODE>rl_tty_set_default_bindings</CODE> so
that the terminal editing characters are bound to <CODE>rl_insert</CODE>.
The bindings are performed in <VAR>kmap</VAR>.
</DL>
</P><P>
<A NAME="IDX295"></A>
<DL>
<DT><U>Function:</U> int <B>rl_reset_terminal</B> <I>(const char *terminal_name)</I>
<DD>Reinitialize Readline's idea of the terminal settings using
<VAR>terminal_name</VAR> as the terminal type (e.g., <CODE>vt100</CODE>).
If <VAR>terminal_name</VAR> is <CODE>NULL</CODE>, the value of the <CODE>TERM</CODE>
environment variable is used.
</DL>
</P><P>
<A NAME="Utility Functions"></A>
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</TR></TABLE>
<H3> 2.4.10 Utility Functions </H3>
<!--docid::SEC39::-->
<P>
<A NAME="IDX296"></A>
<DL>
<DT><U>Function:</U> int <B>rl_save_state</B> <I>(struct readline_state *sp)</I>
<DD>Save a snapshot of Readline's internal state to <VAR>sp</VAR>.
The contents of the <VAR>readline_state</VAR> structure are documented
in <TT>`readline.h'</TT>.
The caller is responsible for allocating the structure.
</DL>
</P><P>
<A NAME="IDX297"></A>
<DL>
<DT><U>Function:</U> int <B>rl_restore_state</B> <I>(struct readline_state *sp)</I>
<DD>Restore Readline's internal state to that stored in <VAR>sp</VAR>, which must
have been saved by a call to <CODE>rl_save_state</CODE>.
The contents of the <VAR>readline_state</VAR> structure are documented
in <TT>`readline.h'</TT>.
The caller is responsible for freeing the structure.
</DL>
</P><P>
<A NAME="IDX298"></A>
<DL>
<DT><U>Function:</U> void <B>rl_free</B> <I>(void *mem)</I>
<DD>Deallocate the memory pointed to by <VAR>mem</VAR>. <VAR>mem</VAR> must have been
allocated by <CODE>malloc</CODE>.
</DL>
</P><P>
<A NAME="IDX299"></A>
<DL>
<DT><U>Function:</U> void <B>rl_replace_line</B> <I>(const char *text, int clear_undo)</I>
<DD>Replace the contents of <CODE>rl_line_buffer</CODE> with <VAR>text</VAR>.
The point and mark are preserved, if possible.
If <VAR>clear_undo</VAR> is non-zero, the undo list associated with the
current line is cleared.
</DL>
</P><P>
<A NAME="IDX300"></A>
<DL>
<DT><U>Function:</U> void <B>rl_extend_line_buffer</B> <I>(int len)</I>
<DD>Ensure that <CODE>rl_line_buffer</CODE> has enough space to hold <VAR>len</VAR>
characters, possibly reallocating it if necessary.
</DL>
</P><P>
<A NAME="IDX301"></A>
<DL>
<DT><U>Function:</U> int <B>rl_initialize</B> <I>(void)</I>
<DD>Initialize or re-initialize Readline's internal state.
It's not strictly necessary to call this; <CODE>readline()</CODE> calls it before
reading any input.
</DL>
</P><P>
<A NAME="IDX302"></A>
<DL>
<DT><U>Function:</U> int <B>rl_ding</B> <I>(void)</I>
<DD>Ring the terminal bell, obeying the setting of <CODE>bell-style</CODE>.
</DL>
</P><P>
<A NAME="IDX303"></A>
<DL>
<DT><U>Function:</U> int <B>rl_alphabetic</B> <I>(int c)</I>
<DD>Return 1 if <VAR>c</VAR> is an alphabetic character.
</DL>
</P><P>
<A NAME="IDX304"></A>
<DL>
<DT><U>Function:</U> void <B>rl_display_match_list</B> <I>(char **matches, int len, int max)</I>
<DD>A convenience function for displaying a list of strings in
columnar format on Readline's output stream. <CODE>matches</CODE> is the list
of strings, in argv format, such as a list of completion matches.
<CODE>len</CODE> is the number of strings in <CODE>matches</CODE>, and <CODE>max</CODE>
is the length of the longest string in <CODE>matches</CODE>. This function uses
the setting of <CODE>print-completions-horizontally</CODE> to select how the
matches are displayed (see section <A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A>).
When displaying completions, this function sets the number of columns used
for display to the value of <CODE>completion-display-width</CODE>, the value of
the environment variable <CODE>COLUMNS</CODE>, or the screen width, in that order.
</DL>
</P><P>
The following are implemented as macros, defined in <CODE>chardefs.h</CODE>.
Applications should refrain from using them.
</P><P>
<A NAME="IDX305"></A>
<DL>
<DT><U>Function:</U> int <B>_rl_uppercase_p</B> <I>(int c)</I>
<DD>Return 1 if <VAR>c</VAR> is an uppercase alphabetic character.
</DL>
</P><P>
<A NAME="IDX306"></A>
<DL>
<DT><U>Function:</U> int <B>_rl_lowercase_p</B> <I>(int c)</I>
<DD>Return 1 if <VAR>c</VAR> is a lowercase alphabetic character.
</DL>
</P><P>
<A NAME="IDX307"></A>
<DL>
<DT><U>Function:</U> int <B>_rl_digit_p</B> <I>(int c)</I>
<DD>Return 1 if <VAR>c</VAR> is a numeric character.
</DL>
</P><P>
<A NAME="IDX308"></A>
<DL>
<DT><U>Function:</U> int <B>_rl_to_upper</B> <I>(int c)</I>
<DD>If <VAR>c</VAR> is a lowercase alphabetic character, return the corresponding
uppercase character.
</DL>
</P><P>
<A NAME="IDX309"></A>
<DL>
<DT><U>Function:</U> int <B>_rl_to_lower</B> <I>(int c)</I>
<DD>If <VAR>c</VAR> is an uppercase alphabetic character, return the corresponding
lowercase character.
</DL>
</P><P>
<A NAME="IDX310"></A>
<DL>
<DT><U>Function:</U> int <B>_rl_digit_value</B> <I>(int c)</I>
<DD>If <VAR>c</VAR> is a number, return the value it represents.
</DL>
</P><P>
<A NAME="Miscellaneous Functions"></A>
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<H3> 2.4.11 Miscellaneous Functions </H3>
<!--docid::SEC40::-->
<P>
<A NAME="IDX311"></A>
<DL>
<DT><U>Function:</U> int <B>rl_macro_bind</B> <I>(const char *keyseq, const char *macro, Keymap map)</I>
<DD>Bind the key sequence <VAR>keyseq</VAR> to invoke the macro <VAR>macro</VAR>.
The binding is performed in <VAR>map</VAR>. When <VAR>keyseq</VAR> is invoked, the
<VAR>macro</VAR> will be inserted into the line. This function is deprecated;
use <CODE>rl_generic_bind()</CODE> instead.
</DL>
</P><P>
<A NAME="IDX312"></A>
<DL>
<DT><U>Function:</U> void <B>rl_macro_dumper</B> <I>(int readable)</I>
<DD>Print the key sequences bound to macros and their values, using
the current keymap, to <CODE>rl_outstream</CODE>.
If <VAR>readable</VAR> is non-zero, the list is formatted in such a way
that it can be made part of an <CODE>inputrc</CODE> file and re-read.
</DL>
</P><P>
<A NAME="IDX313"></A>
<DL>
<DT><U>Function:</U> int <B>rl_variable_bind</B> <I>(const char *variable, const char *value)</I>
<DD>Make the Readline variable <VAR>variable</VAR> have <VAR>value</VAR>.
This behaves as if the readline command
<SAMP>`set <VAR>variable</VAR> <VAR>value</VAR>'</SAMP> had been executed in an <CODE>inputrc</CODE>
file (see section <A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A>).
</DL>
</P><P>
<A NAME="IDX314"></A>
<DL>
<DT><U>Function:</U> char * <B>rl_variable_value</B> <I>(const char *variable)</I>
<DD>Return a string representing the value of the Readline variable <VAR>variable</VAR>.
For boolean variables, this string is either <SAMP>`on'</SAMP> or <SAMP>`off'</SAMP>.
</DL>
</P><P>
<A NAME="IDX315"></A>
<DL>
<DT><U>Function:</U> void <B>rl_variable_dumper</B> <I>(int readable)</I>
<DD>Print the readline variable names and their current values
to <CODE>rl_outstream</CODE>.
If <VAR>readable</VAR> is non-zero, the list is formatted in such a way
that it can be made part of an <CODE>inputrc</CODE> file and re-read.
</DL>
</P><P>
<A NAME="IDX316"></A>
<DL>
<DT><U>Function:</U> int <B>rl_set_paren_blink_timeout</B> <I>(int u)</I>
<DD>Set the time interval (in microseconds) that Readline waits when showing
a balancing character when <CODE>blink-matching-paren</CODE> has been enabled.
</DL>
</P><P>
<A NAME="IDX317"></A>
<DL>
<DT><U>Function:</U> char * <B>rl_get_termcap</B> <I>(const char *cap)</I>
<DD>Retrieve the string value of the termcap capability <VAR>cap</VAR>.
Readline fetches the termcap entry for the current terminal name and
uses those capabilities to move around the screen line and perform other
terminal-specific operations, like erasing a line. Readline does not
use all of a terminal's capabilities, and this function will return
values for only those capabilities Readline uses.
</DL>
</P><P>
<A NAME="Alternate Interface"></A>
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<H3> 2.4.12 Alternate Interface </H3>
<!--docid::SEC41::-->
<P>
An alternate interface is available to plain <CODE>readline()</CODE>. Some
applications need to interleave keyboard I/O with file, device, or
window system I/O, typically by using a main loop to <CODE>select()</CODE>
on various file descriptors. To accomodate this need, readline can
also be invoked as a `callback' function from an event loop. There
are functions available to make this easy.
</P><P>
<A NAME="IDX318"></A>
<DL>
<DT><U>Function:</U> void <B>rl_callback_handler_install</B> <I>(const char *prompt, rl_vcpfunc_t *lhandler)</I>
<DD>Set up the terminal for readline I/O and display the initial
expanded value of <VAR>prompt</VAR>. Save the value of <VAR>lhandler</VAR> to
use as a function to call when a complete line of input has been entered.
The function takes the text of the line as an argument.
</DL>
</P><P>
<A NAME="IDX319"></A>
<DL>
<DT><U>Function:</U> void <B>rl_callback_read_char</B> <I>(void)</I>
<DD>Whenever an application determines that keyboard input is available, it
should call <CODE>rl_callback_read_char()</CODE>, which will read the next
character from the current input source.
If that character completes the line, <CODE>rl_callback_read_char</CODE> will
invoke the <VAR>lhandler</VAR> function saved by <CODE>rl_callback_handler_install</CODE>
to process the line.
Before calling the <VAR>lhandler</VAR> function, the terminal settings are
reset to the values they had before calling
<CODE>rl_callback_handler_install</CODE>.
If the <VAR>lhandler</VAR> function returns,
the terminal settings are modified for Readline's use again.
<CODE>EOF</CODE> is indicated by calling <VAR>lhandler</VAR> with a
<CODE>NULL</CODE> line.
</DL>
</P><P>
<A NAME="IDX320"></A>
<DL>
<DT><U>Function:</U> void <B>rl_callback_handler_remove</B> <I>(void)</I>
<DD>Restore the terminal to its initial state and remove the line handler.
This may be called from within a callback as well as independently.
If the <VAR>lhandler</VAR> installed by <CODE>rl_callback_handler_install</CODE>
does not exit the program, either this function or the function referred
to by the value of <CODE>rl_deprep_term_function</CODE> should be called before
the program exits to reset the terminal settings.
</DL>
</P><P>
<A NAME="A Readline Example"></A>
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</TR></TABLE>
<H3> 2.4.13 A Readline Example </H3>
<!--docid::SEC42::-->
<P>
Here is a function which changes lowercase characters to their uppercase
equivalents, and uppercase characters to lowercase. If
this function was bound to <SAMP>`M-c'</SAMP>, then typing <SAMP>`M-c'</SAMP> would
change the case of the character under point. Typing <SAMP>`M-1 0 M-c'</SAMP>
would change the case of the following 10 characters, leaving the cursor on
the last character changed.
</P><P>
<TABLE><tr><td> </td><td class=example><pre>/* Invert the case of the COUNT following characters. */
int
invert_case_line (count, key)
int count, key;
{
register int start, end, i;
start = rl_point;
if (rl_point >= rl_end)
return (0);
if (count < 0)
{
direction = -1;
count = -count;
}
else
direction = 1;
/* Find the end of the range to modify. */
end = start + (count * direction);
/* Force it to be within range. */
if (end > rl_end)
end = rl_end;
else if (end < 0)
end = 0;
if (start == end)
return (0);
if (start > end)
{
int temp = start;
start = end;
end = temp;
}
/* Tell readline that we are modifying the line,
so it will save the undo information. */
rl_modifying (start, end);
for (i = start; i != end; i++)
{
if (_rl_uppercase_p (rl_line_buffer[i]))
rl_line_buffer[i] = _rl_to_lower (rl_line_buffer[i]);
else if (_rl_lowercase_p (rl_line_buffer[i]))
rl_line_buffer[i] = _rl_to_upper (rl_line_buffer[i]);
}
/* Move point to on top of the last character changed. */
rl_point = (direction == 1) ? end - 1 : start;
return (0);
}
</pre></td></tr></table></P><P>
<A NAME="Readline Signal Handling"></A>
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<H2> 2.5 Readline Signal Handling </H2>
<!--docid::SEC43::-->
<P>
Signals are asynchronous events sent to a process by the Unix kernel,
sometimes on behalf of another process. They are intended to indicate
exceptional events, like a user pressing the interrupt key on his terminal,
or a network connection being broken. There is a class of signals that can
be sent to the process currently reading input from the keyboard. Since
Readline changes the terminal attributes when it is called, it needs to
perform special processing when such a signal is received in order to
restore the terminal to a sane state, or provide application writers with
functions to do so manually.
</P><P>
Readline contains an internal signal handler that is installed for a
number of signals (<CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>, <CODE>SIGTERM</CODE>,
<CODE>SIGALRM</CODE>, <CODE>SIGTSTP</CODE>, <CODE>SIGTTIN</CODE>, and <CODE>SIGTTOU</CODE>).
When one of these signals is received, the signal handler
will reset the terminal attributes to those that were in effect before
<CODE>readline()</CODE> was called, reset the signal handling to what it was
before <CODE>readline()</CODE> was called, and resend the signal to the calling
application.
If and when the calling application's signal handler returns, Readline
will reinitialize the terminal and continue to accept input.
When a <CODE>SIGINT</CODE> is received, the Readline signal handler performs
some additional work, which will cause any partially-entered line to be
aborted (see the description of <CODE>rl_free_line_state()</CODE> below).
</P><P>
There is an additional Readline signal handler, for <CODE>SIGWINCH</CODE>, which
the kernel sends to a process whenever the terminal's size changes (for
example, if a user resizes an <CODE>xterm</CODE>). The Readline <CODE>SIGWINCH</CODE>
handler updates Readline's internal screen size information, and then calls
any <CODE>SIGWINCH</CODE> signal handler the calling application has installed.
Readline calls the application's <CODE>SIGWINCH</CODE> signal handler without
resetting the terminal to its original state. If the application's signal
handler does more than update its idea of the terminal size and return (for
example, a <CODE>longjmp</CODE> back to a main processing loop), it <EM>must</EM>
call <CODE>rl_cleanup_after_signal()</CODE> (described below), to restore the
terminal state.
</P><P>
Readline provides two variables that allow application writers to
control whether or not it will catch certain signals and act on them
when they are received. It is important that applications change the
values of these variables only when calling <CODE>readline()</CODE>, not in
a signal handler, so Readline's internal signal state is not corrupted.
</P><P>
<A NAME="IDX321"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_catch_signals</B>
<DD>If this variable is non-zero, Readline will install signal handlers for
<CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>, <CODE>SIGTERM</CODE>, <CODE>SIGALRM</CODE>,
<CODE>SIGTSTP</CODE>, <CODE>SIGTTIN</CODE>, and <CODE>SIGTTOU</CODE>.
</P><P>
The default value of <CODE>rl_catch_signals</CODE> is 1.
</DL>
</P><P>
<A NAME="IDX322"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_catch_sigwinch</B>
<DD>If this variable is non-zero, Readline will install a signal handler for
<CODE>SIGWINCH</CODE>.
</P><P>
The default value of <CODE>rl_catch_sigwinch</CODE> is 1.
</DL>
</P><P>
If an application does not wish to have Readline catch any signals, or
to handle signals other than those Readline catches (<CODE>SIGHUP</CODE>,
for example),
Readline provides convenience functions to do the necessary terminal
and internal state cleanup upon receipt of a signal.
</P><P>
<A NAME="IDX323"></A>
<DL>
<DT><U>Function:</U> void <B>rl_cleanup_after_signal</B> <I>(void)</I>
<DD>This function will reset the state of the terminal to what it was before
<CODE>readline()</CODE> was called, and remove the Readline signal handlers for
all signals, depending on the values of <CODE>rl_catch_signals</CODE> and
<CODE>rl_catch_sigwinch</CODE>.
</DL>
</P><P>
<A NAME="IDX324"></A>
<DL>
<DT><U>Function:</U> void <B>rl_free_line_state</B> <I>(void)</I>
<DD>This will free any partial state associated with the current input line
(undo information, any partial history entry, any partially-entered
keyboard macro, and any partially-entered numeric argument). This
should be called before <CODE>rl_cleanup_after_signal()</CODE>. The
Readline signal handler for <CODE>SIGINT</CODE> calls this to abort the
current input line.
</DL>
</P><P>
<A NAME="IDX325"></A>
<DL>
<DT><U>Function:</U> void <B>rl_reset_after_signal</B> <I>(void)</I>
<DD>This will reinitialize the terminal and reinstall any Readline signal
handlers, depending on the values of <CODE>rl_catch_signals</CODE> and
<CODE>rl_catch_sigwinch</CODE>.
</DL>
</P><P>
If an application does not wish Readline to catch <CODE>SIGWINCH</CODE>, it may
call <CODE>rl_resize_terminal()</CODE> or <CODE>rl_set_screen_size()</CODE> to force
Readline to update its idea of the terminal size when a <CODE>SIGWINCH</CODE>
is received.
</P><P>
<A NAME="IDX326"></A>
<DL>
<DT><U>Function:</U> void <B>rl_echo_signal_char</B> <I>(int sig)</I>
<DD>If an application wishes to install its own signal handlers, but still
have readline display characters that generate signals, calling this
function with <VAR>sig</VAR> set to <CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>, or
<CODE>SIGTSTP</CODE> will display the character generating that signal.
</DL>
</P><P>
<A NAME="IDX327"></A>
<DL>
<DT><U>Function:</U> void <B>rl_resize_terminal</B> <I>(void)</I>
<DD>Update Readline's internal screen size by reading values from the kernel.
</DL>
</P><P>
<A NAME="IDX328"></A>
<DL>
<DT><U>Function:</U> void <B>rl_set_screen_size</B> <I>(int rows, int cols)</I>
<DD>Set Readline's idea of the terminal size to <VAR>rows</VAR> rows and
<VAR>cols</VAR> columns. If either <VAR>rows</VAR> or <VAR>columns</VAR> is less than
or equal to 0, Readline's idea of that terminal dimension is unchanged.
</DL>
</P><P>
If an application does not want to install a <CODE>SIGWINCH</CODE> handler, but
is still interested in the screen dimensions, Readline's idea of the screen
size may be queried.
</P><P>
<A NAME="IDX329"></A>
<DL>
<DT><U>Function:</U> void <B>rl_get_screen_size</B> <I>(int *rows, int *cols)</I>
<DD>Return Readline's idea of the terminal's size in the
variables pointed to by the arguments.
</DL>
</P><P>
<A NAME="IDX330"></A>
<DL>
<DT><U>Function:</U> void <B>rl_reset_screen_size</B> <I>(void)</I>
<DD>Cause Readline to reobtain the screen size and recalculate its dimensions.
</DL>
</P><P>
The following functions install and remove Readline's signal handlers.
</P><P>
<A NAME="IDX331"></A>
<DL>
<DT><U>Function:</U> int <B>rl_set_signals</B> <I>(void)</I>
<DD>Install Readline's signal handler for <CODE>SIGINT</CODE>, <CODE>SIGQUIT</CODE>,
<CODE>SIGTERM</CODE>, <CODE>SIGALRM</CODE>, <CODE>SIGTSTP</CODE>, <CODE>SIGTTIN</CODE>,
<CODE>SIGTTOU</CODE>, and <CODE>SIGWINCH</CODE>, depending on the values of
<CODE>rl_catch_signals</CODE> and <CODE>rl_catch_sigwinch</CODE>.
</DL>
</P><P>
<A NAME="IDX332"></A>
<DL>
<DT><U>Function:</U> int <B>rl_clear_signals</B> <I>(void)</I>
<DD>Remove all of the Readline signal handlers installed by
<CODE>rl_set_signals()</CODE>.
</DL>
</P><P>
<A NAME="Custom Completers"></A>
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<H2> 2.6 Custom Completers </H2>
<!--docid::SEC44::-->
<P>
Typically, a program that reads commands from the user has a way of
disambiguating commands and data. If your program is one of these, then
it can provide completion for commands, data, or both.
The following sections describe how your program and Readline
cooperate to provide this service.
</P><P>
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC45">2.6.1 How Completing Works</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">The logic used to do completion.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Functions provided by Readline.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Variables which control completion.</TD></TR>
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="readline.html#SEC48">2.6.4 A Short Completion Example</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">An example of writing completer subroutines.</TD></TR>
</TABLE></BLOCKQUOTE>
<P>
<A NAME="How Completing Works"></A>
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<H3> 2.6.1 How Completing Works </H3>
<!--docid::SEC45::-->
<P>
In order to complete some text, the full list of possible completions
must be available. That is, it is not possible to accurately
expand a partial word without knowing all of the possible words
which make sense in that context. The Readline library provides
the user interface to completion, and two of the most common
completion functions: filename and username. For completing other types
of text, you must write your own completion function. This section
describes exactly what such functions must do, and provides an example.
</P><P>
There are three major functions used to perform completion:
</P><P>
<OL>
<LI>
The user-interface function <CODE>rl_complete()</CODE>. This function is
called with the same arguments as other bindable Readline functions:
<VAR>count</VAR> and <VAR>invoking_key</VAR>.
It isolates the word to be completed and calls
<CODE>rl_completion_matches()</CODE> to generate a list of possible completions.
It then either lists the possible completions, inserts the possible
completions, or actually performs the
completion, depending on which behavior is desired.
<P>
<LI>
The internal function <CODE>rl_completion_matches()</CODE> uses an
application-supplied <EM>generator</EM> function to generate the list of
possible matches, and then returns the array of these matches.
The caller should place the address of its generator function in
<CODE>rl_completion_entry_function</CODE>.
<P>
<LI>
The generator function is called repeatedly from
<CODE>rl_completion_matches()</CODE>, returning a string each time. The
arguments to the generator function are <VAR>text</VAR> and <VAR>state</VAR>.
<VAR>text</VAR> is the partial word to be completed. <VAR>state</VAR> is zero the
first time the function is called, allowing the generator to perform
any necessary initialization, and a positive non-zero integer for
each subsequent call. The generator function returns
<CODE>(char *)NULL</CODE> to inform <CODE>rl_completion_matches()</CODE> that there are
no more possibilities left. Usually the generator function computes the
list of possible completions when <VAR>state</VAR> is zero, and returns them
one at a time on subsequent calls. Each string the generator function
returns as a match must be allocated with <CODE>malloc()</CODE>; Readline
frees the strings when it has finished with them.
Such a generator function is referred to as an
<EM>application-specific completion function</EM>.
<P>
</OL>
<P>
<A NAME="IDX333"></A>
<DL>
<DT><U>Function:</U> int <B>rl_complete</B> <I>(int ignore, int invoking_key)</I>
<DD>Complete the word at or before point. You have supplied the function
that does the initial simple matching selection algorithm (see
<CODE>rl_completion_matches()</CODE>). The default is to do filename completion.
</DL>
</P><P>
<A NAME="IDX334"></A>
<DL>
<DT><U>Variable:</U> rl_compentry_func_t * <B>rl_completion_entry_function</B>
<DD>This is a pointer to the generator function for
<CODE>rl_completion_matches()</CODE>.
If the value of <CODE>rl_completion_entry_function</CODE> is
<CODE>NULL</CODE> then the default filename generator
function, <CODE>rl_filename_completion_function()</CODE>, is used.
An <EM>application-specific completion function</EM> is a function whose
address is assigned to <CODE>rl_completion_entry_function</CODE> and whose
return values are used to generate possible completions.
</DL>
</P><P>
<A NAME="Completion Functions"></A>
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<H3> 2.6.2 Completion Functions </H3>
<!--docid::SEC46::-->
<P>
Here is the complete list of callable completion functions present in
Readline.
</P><P>
<A NAME="IDX335"></A>
<DL>
<DT><U>Function:</U> int <B>rl_complete_internal</B> <I>(int what_to_do)</I>
<DD>Complete the word at or before point. <VAR>what_to_do</VAR> says what to do
with the completion. A value of <SAMP>`?'</SAMP> means list the possible
completions. <SAMP>`TAB'</SAMP> means do standard completion. <SAMP>`*'</SAMP> means
insert all of the possible completions. <SAMP>`!'</SAMP> means to display
all of the possible completions, if there is more than one, as well as
performing partial completion. <SAMP>`@'</SAMP> is similar to <SAMP>`!'</SAMP>, but
possible completions are not listed if the possible completions share
a common prefix.
</DL>
</P><P>
<A NAME="IDX336"></A>
<DL>
<DT><U>Function:</U> int <B>rl_complete</B> <I>(int ignore, int invoking_key)</I>
<DD>Complete the word at or before point. You have supplied the function
that does the initial simple matching selection algorithm (see
<CODE>rl_completion_matches()</CODE> and <CODE>rl_completion_entry_function</CODE>).
The default is to do filename
completion. This calls <CODE>rl_complete_internal()</CODE> with an
argument depending on <VAR>invoking_key</VAR>.
</DL>
</P><P>
<A NAME="IDX337"></A>
<DL>
<DT><U>Function:</U> int <B>rl_possible_completions</B> <I>(int count, int invoking_key)</I>
<DD>List the possible completions. See description of <CODE>rl_complete
()</CODE>. This calls <CODE>rl_complete_internal()</CODE> with an argument of
<SAMP>`?'</SAMP>.
</DL>
</P><P>
<A NAME="IDX338"></A>
<DL>
<DT><U>Function:</U> int <B>rl_insert_completions</B> <I>(int count, int invoking_key)</I>
<DD>Insert the list of possible completions into the line, deleting the
partially-completed word. See description of <CODE>rl_complete()</CODE>.
This calls <CODE>rl_complete_internal()</CODE> with an argument of <SAMP>`*'</SAMP>.
</DL>
</P><P>
<A NAME="IDX339"></A>
<DL>
<DT><U>Function:</U> int <B>rl_completion_mode</B> <I>(rl_command_func_t *cfunc)</I>
<DD>Returns the apppriate value to pass to <CODE>rl_complete_internal()</CODE>
depending on whether <VAR>cfunc</VAR> was called twice in succession and
the values of the <CODE>show-all-if-ambiguous</CODE> and
<CODE>show-all-if-unmodified</CODE> variables.
Application-specific completion functions may use this function to present
the same interface as <CODE>rl_complete()</CODE>.
</DL>
</P><P>
<A NAME="IDX340"></A>
<DL>
<DT><U>Function:</U> char ** <B>rl_completion_matches</B> <I>(const char *text, rl_compentry_func_t *entry_func)</I>
<DD>Returns an array of strings which is a list of completions for
<VAR>text</VAR>. If there are no completions, returns <CODE>NULL</CODE>.
The first entry in the returned array is the substitution for <VAR>text</VAR>.
The remaining entries are the possible completions. The array is
terminated with a <CODE>NULL</CODE> pointer.
</P><P>
<VAR>entry_func</VAR> is a function of two args, and returns a
<CODE>char *</CODE>. The first argument is <VAR>text</VAR>. The second is a
state argument; it is zero on the first call, and non-zero on subsequent
calls. <VAR>entry_func</VAR> returns a <CODE>NULL</CODE> pointer to the caller
when there are no more matches.
</DL>
</P><P>
<A NAME="IDX341"></A>
<DL>
<DT><U>Function:</U> char * <B>rl_filename_completion_function</B> <I>(const char *text, int state)</I>
<DD>A generator function for filename completion in the general case.
<VAR>text</VAR> is a partial filename.
The Bash source is a useful reference for writing application-specific
completion functions (the Bash completion functions call this and other
Readline functions).
</DL>
</P><P>
<A NAME="IDX342"></A>
<DL>
<DT><U>Function:</U> char * <B>rl_username_completion_function</B> <I>(const char *text, int state)</I>
<DD>A completion generator for usernames. <VAR>text</VAR> contains a partial
username preceded by a random character (usually <SAMP>`~'</SAMP>). As with all
completion generators, <VAR>state</VAR> is zero on the first call and non-zero
for subsequent calls.
</DL>
</P><P>
<A NAME="Completion Variables"></A>
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<H3> 2.6.3 Completion Variables </H3>
<!--docid::SEC47::-->
<P>
<A NAME="IDX343"></A>
<DL>
<DT><U>Variable:</U> rl_compentry_func_t * <B>rl_completion_entry_function</B>
<DD>A pointer to the generator function for <CODE>rl_completion_matches()</CODE>.
<CODE>NULL</CODE> means to use <CODE>rl_filename_completion_function()</CODE>,
the default filename completer.
</DL>
</P><P>
<A NAME="IDX344"></A>
<DL>
<DT><U>Variable:</U> rl_completion_func_t * <B>rl_attempted_completion_function</B>
<DD>A pointer to an alternative function to create matches.
The function is called with <VAR>text</VAR>, <VAR>start</VAR>, and <VAR>end</VAR>.
<VAR>start</VAR> and <VAR>end</VAR> are indices in <CODE>rl_line_buffer</CODE> defining
the boundaries of <VAR>text</VAR>, which is a character string.
If this function exists and returns <CODE>NULL</CODE>, or if this variable is
set to <CODE>NULL</CODE>, then <CODE>rl_complete()</CODE> will call the value of
<CODE>rl_completion_entry_function</CODE> to generate matches, otherwise the
array of strings returned will be used.
If this function sets the <CODE>rl_attempted_completion_over</CODE>
variable to a non-zero value, Readline will not perform its default
completion even if this function returns no matches.
</DL>
</P><P>
<A NAME="IDX345"></A>
<DL>
<DT><U>Variable:</U> rl_quote_func_t * <B>rl_filename_quoting_function</B>
<DD>A pointer to a function that will quote a filename in an
application-specific fashion. This is called if filename completion is being
attempted and one of the characters in <CODE>rl_filename_quote_characters</CODE>
appears in a completed filename. The function is called with
<VAR>text</VAR>, <VAR>match_type</VAR>, and <VAR>quote_pointer</VAR>. The <VAR>text</VAR>
is the filename to be quoted. The <VAR>match_type</VAR> is either
<CODE>SINGLE_MATCH</CODE>, if there is only one completion match, or
<CODE>MULT_MATCH</CODE>. Some functions use this to decide whether or not to
insert a closing quote character. The <VAR>quote_pointer</VAR> is a pointer
to any opening quote character the user typed. Some functions choose
to reset this character.
</DL>
</P><P>
<A NAME="IDX346"></A>
<DL>
<DT><U>Variable:</U> rl_dequote_func_t * <B>rl_filename_dequoting_function</B>
<DD>A pointer to a function that will remove application-specific quoting
characters from a filename before completion is attempted, so those
characters do not interfere with matching the text against names in
the filesystem. It is called with <VAR>text</VAR>, the text of the word
to be dequoted, and <VAR>quote_char</VAR>, which is the quoting character
that delimits the filename (usually <SAMP>`''</SAMP> or <SAMP>`"'</SAMP>). If
<VAR>quote_char</VAR> is zero, the filename was not in an embedded string.
</DL>
</P><P>
<A NAME="IDX347"></A>
<DL>
<DT><U>Variable:</U> rl_linebuf_func_t * <B>rl_char_is_quoted_p</B>
<DD>A pointer to a function to call that determines whether or not a specific
character in the line buffer is quoted, according to whatever quoting
mechanism the program calling Readline uses. The function is called with
two arguments: <VAR>text</VAR>, the text of the line, and <VAR>index</VAR>, the
index of the character in the line. It is used to decide whether a
character found in <CODE>rl_completer_word_break_characters</CODE> should be
used to break words for the completer.
</DL>
</P><P>
<A NAME="IDX348"></A>
<DL>
<DT><U>Variable:</U> rl_compignore_func_t * <B>rl_ignore_some_completions_function</B>
<DD>This function, if defined, is called by the completer when real filename
completion is done, after all the matching names have been generated.
It is passed a <CODE>NULL</CODE> terminated array of matches.
The first element (<CODE>matches[0]</CODE>) is the
maximal substring common to all matches. This function can
re-arrange the list of matches as required, but each element deleted
from the array must be freed.
</DL>
</P><P>
<A NAME="IDX349"></A>
<DL>
<DT><U>Variable:</U> rl_icppfunc_t * <B>rl_directory_completion_hook</B>
<DD>This function, if defined, is allowed to modify the directory portion
of filenames Readline completes.
It could be used to expand symbolic links or shell variables in pathnames.
It is called with the address of a string (the current directory name) as an
argument, and may modify that string.
If the string is replaced with a new string, the old value should be freed.
Any modified directory name should have a trailing slash.
The modified value will be used as part of the completion, replacing
the directory portion of the pathname the user typed.
At the least, even if no other expansion is performed, this function should
remove any quote characters from the directory name, because its result will
be passed directly to <CODE>opendir()</CODE>.
The directory completion hook returns an integer that should be non-zero if
the function modifies its directory argument.
The function should not modify the directory argument if it returns 0.
</DL>
</P><P>
<A NAME="IDX350"></A>
<DL>
<DT><U>Variable:</U> rl_dequote_func_t * <B>rl_filename_rewrite_hook</B>
<DD>If non-zero, this is the address of a function called when reading
directory entries from the filesystem for completion and comparing
them to the partial word to be completed. The function should
perform any necesary application or system-specific conversion on
the filename, such as converting between character sets or converting
from a filesystem format to a character input format.
The function takes two arguments: <VAR>fname</VAR>, the filename to be converted,
and <VAR>fnlen</VAR>, its length in bytes.
It must either return its first argument (if no conversion takes place)
or the converted filename in newly-allocated memory. The converted
form is used to compare against the word to be completed, and, if it
matches, is added to the list of matches. Readline will free the
allocated string.
</DL>
</P><P>
<A NAME="IDX351"></A>
<DL>
<DT><U>Variable:</U> rl_compdisp_func_t * <B>rl_completion_display_matches_hook</B>
<DD>If non-zero, then this is the address of a function to call when
completing a word would normally display the list of possible matches.
This function is called in lieu of Readline displaying the list.
It takes three arguments:
(<CODE>char **</CODE><VAR>matches</VAR>, <CODE>int</CODE> <VAR>num_matches</VAR>, <CODE>int</CODE> <VAR>max_length</VAR>)
where <VAR>matches</VAR> is the array of matching strings,
<VAR>num_matches</VAR> is the number of strings in that array, and
<VAR>max_length</VAR> is the length of the longest string in that array.
Readline provides a convenience function, <CODE>rl_display_match_list</CODE>,
that takes care of doing the display to Readline's output stream. That
function may be called from this hook.
</DL>
</P><P>
<A NAME="IDX352"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_basic_word_break_characters</B>
<DD>The basic list of characters that signal a break between words for the
completer routine. The default value of this variable is the characters
which break words for completion in Bash:
<CODE>" \t\n\"\\'`@$><=;|&{("</CODE>.
</DL>
</P><P>
<A NAME="IDX353"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_basic_quote_characters</B>
<DD>A list of quote characters which can cause a word break.
</DL>
</P><P>
<A NAME="IDX354"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_completer_word_break_characters</B>
<DD>The list of characters that signal a break between words for
<CODE>rl_complete_internal()</CODE>. The default list is the value of
<CODE>rl_basic_word_break_characters</CODE>.
</DL>
</P><P>
<A NAME="IDX355"></A>
<DL>
<DT><U>Variable:</U> rl_cpvfunc_t * <B>rl_completion_word_break_hook</B>
<DD>If non-zero, this is the address of a function to call when Readline is
deciding where to separate words for word completion. It should return
a character string like <CODE>rl_completer_word_break_characters</CODE> to be
used to perform the current completion. The function may choose to set
<CODE>rl_completer_word_break_characters</CODE> itself. If the function
returns <CODE>NULL</CODE>, <CODE>rl_completer_word_break_characters</CODE> is used.
</DL>
</P><P>
<A NAME="IDX356"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_completer_quote_characters</B>
<DD>A list of characters which can be used to quote a substring of the line.
Completion occurs on the entire substring, and within the substring
<CODE>rl_completer_word_break_characters</CODE> are treated as any other character,
unless they also appear within this list.
</DL>
</P><P>
<A NAME="IDX357"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_filename_quote_characters</B>
<DD>A list of characters that cause a filename to be quoted by the completer
when they appear in a completed filename. The default is the null string.
</DL>
</P><P>
<A NAME="IDX358"></A>
<DL>
<DT><U>Variable:</U> const char * <B>rl_special_prefixes</B>
<DD>The list of characters that are word break characters, but should be
left in <VAR>text</VAR> when it is passed to the completion function.
Programs can use this to help determine what kind of completing to do.
For instance, Bash sets this variable to "$@" so that it can complete
shell variables and hostnames.
</DL>
</P><P>
<A NAME="IDX359"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_query_items</B>
<DD>Up to this many items will be displayed in response to a
possible-completions call. After that, readline asks the user if she is sure
she wants to see them all. The default value is 100. A negative value
indicates that Readline should never ask the user.
</DL>
</P><P>
<A NAME="IDX360"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_append_character</B>
<DD>When a single completion alternative matches at the end of the command
line, this character is appended to the inserted completion text. The
default is a space character (<SAMP>` '</SAMP>). Setting this to the null
character (<SAMP>`\0'</SAMP>) prevents anything being appended automatically.
This can be changed in application-specific completion functions to
provide the "most sensible word separator character" according to
an application-specific command line syntax specification.
</DL>
</P><P>
<A NAME="IDX361"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_suppress_append</B>
<DD>If non-zero, <VAR>rl_completion_append_character</VAR> is not appended to
matches at the end of the command line, as described above.
It is set to 0 before any application-specific completion function
is called, and may only be changed within such a function.
</DL>
</P><P>
<A NAME="IDX362"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_quote_character</B>
<DD>When Readline is completing quoted text, as delimited by one of the
characters in <VAR>rl_completer_quote_characters</VAR>, it sets this variable
to the quoting character found.
This is set before any application-specific completion function is called.
</DL>
</P><P>
<A NAME="IDX363"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_suppress_quote</B>
<DD>If non-zero, Readline does not append a matching quote character when
performing completion on a quoted string.
It is set to 0 before any application-specific completion function
is called, and may only be changed within such a function.
</DL>
</P><P>
<A NAME="IDX364"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_found_quote</B>
<DD>When Readline is completing quoted text, it sets this variable
to a non-zero value if the word being completed contains or is delimited
by any quoting characters, including backslashes.
This is set before any application-specific completion function is called.
</DL>
</P><P>
<A NAME="IDX365"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_mark_symlink_dirs</B>
<DD>If non-zero, a slash will be appended to completed filenames that are
symbolic links to directory names, subject to the value of the
user-settable <VAR>mark-directories</VAR> variable.
This variable exists so that application-specific completion functions
can override the user's global preference (set via the
<VAR>mark-symlinked-directories</VAR> Readline variable) if appropriate.
This variable is set to the user's preference before any
application-specific completion function is called, so unless that
function modifies the value, the user's preferences are honored.
</DL>
</P><P>
<A NAME="IDX366"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_ignore_completion_duplicates</B>
<DD>If non-zero, then duplicates in the matches are removed.
The default is 1.
</DL>
</P><P>
<A NAME="IDX367"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_filename_completion_desired</B>
<DD>Non-zero means that the results of the matches are to be treated as
filenames. This is <EM>always</EM> zero when completion is attempted,
and can only be changed
within an application-specific completion function. If it is set to a
non-zero value by such a function, directory names have a slash appended
and Readline attempts to quote completed filenames if they contain any
characters in <CODE>rl_filename_quote_characters</CODE> and
<CODE>rl_filename_quoting_desired</CODE> is set to a non-zero value.
</DL>
</P><P>
<A NAME="IDX368"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_filename_quoting_desired</B>
<DD>Non-zero means that the results of the matches are to be quoted using
double quotes (or an application-specific quoting mechanism) if the
completed filename contains any characters in
<CODE>rl_filename_quote_chars</CODE>. This is <EM>always</EM> non-zero
when completion is attempted, and can only be changed within an
application-specific completion function.
The quoting is effected via a call to the function pointed to
by <CODE>rl_filename_quoting_function</CODE>.
</DL>
</P><P>
<A NAME="IDX369"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_attempted_completion_over</B>
<DD>If an application-specific completion function assigned to
<CODE>rl_attempted_completion_function</CODE> sets this variable to a non-zero
value, Readline will not perform its default filename completion even
if the application's completion function returns no matches.
It should be set only by an application's completion function.
</DL>
</P><P>
<A NAME="IDX370"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_sort_completion_matches</B>
<DD>If an application sets this variable to 0, Readline will not sort the
list of completions (which implies that it cannot remove any duplicate
completions). The default value is 1, which means that Readline will
sort the completions and, depending on the value of
<CODE>rl_ignore_completion_duplicates</CODE>, will attempt to remove duplicate
matches.
</DL>
</P><P>
<A NAME="IDX371"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_type</B>
<DD>Set to a character describing the type of completion Readline is currently
attempting; see the description of <CODE>rl_complete_internal()</CODE>
(see section <A HREF="readline.html#SEC46">2.6.2 Completion Functions</A>) for the list of characters.
This is set to the appropriate value before any application-specific
completion function is called, allowing such functions to present
the same interface as <CODE>rl_complete()</CODE>.
</DL>
</P><P>
<A NAME="IDX372"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_completion_invoking_key</B>
<DD>Set to the final character in the key sequence that invoked one of the
completion functions that call <CODE>rl_complete_internal()</CODE>. This is
set to the appropriate value before any application-specific completion
function is called.
</DL>
</P><P>
<A NAME="IDX373"></A>
<DL>
<DT><U>Variable:</U> int <B>rl_inhibit_completion</B>
<DD>If this variable is non-zero, completion is inhibited. The completion
character will be inserted as any other bound to <CODE>self-insert</CODE>.
</DL>
</P><P>
<A NAME="A Short Completion Example"></A>
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<H3> 2.6.4 A Short Completion Example </H3>
<!--docid::SEC48::-->
<P>
Here is a small application demonstrating the use of the GNU Readline
library. It is called <CODE>fileman</CODE>, and the source code resides in
<TT>`examples/fileman.c'</TT>. This sample application provides
completion of command names, line editing features, and access to the
history list.
</P><P>
<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre>/* fileman.c -- A tiny application which demonstrates how to use the
GNU Readline library. This application interactively allows users
to manipulate files and their modes. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_FILE_H
# include <sys/file.h>
#endif
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#if defined (HAVE_STRING_H)
# include <string.h>
#else /* !HAVE_STRING_H */
# include <strings.h>
#endif /* !HAVE_STRING_H */
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
#include <time.h>
#include <readline/readline.h>
#include <readline/history.h>
extern char *xmalloc PARAMS((size_t));
/* The names of functions that actually do the manipulation. */
int com_list PARAMS((char *));
int com_view PARAMS((char *));
int com_rename PARAMS((char *));
int com_stat PARAMS((char *));
int com_pwd PARAMS((char *));
int com_delete PARAMS((char *));
int com_help PARAMS((char *));
int com_cd PARAMS((char *));
int com_quit PARAMS((char *));
/* A structure which contains information on the commands this program
can understand. */
typedef struct {
char *name; /* User printable name of the function. */
rl_icpfunc_t *func; /* Function to call to do the job. */
char *doc; /* Documentation for this function. */
} COMMAND;
COMMAND commands[] = {
{ "cd", com_cd, "Change to directory DIR" },
{ "delete", com_delete, "Delete FILE" },
{ "help", com_help, "Display this text" },
{ "?", com_help, "Synonym for `help'" },
{ "list", com_list, "List files in DIR" },
{ "ls", com_list, "Synonym for `list'" },
{ "pwd", com_pwd, "Print the current working directory" },
{ "quit", com_quit, "Quit using Fileman" },
{ "rename", com_rename, "Rename FILE to NEWNAME" },
{ "stat", com_stat, "Print out statistics on FILE" },
{ "view", com_view, "View the contents of FILE" },
{ (char *)NULL, (rl_icpfunc_t *)NULL, (char *)NULL }
};
/* Forward declarations. */
char *stripwhite ();
COMMAND *find_command ();
/* The name of this program, as taken from argv[0]. */
char *progname;
/* When non-zero, this global means the user is done using this program. */
int done;
char *
dupstr (s)
char *s;
{
char *r;
r = xmalloc (strlen (s) + 1);
strcpy (r, s);
return (r);
}
main (argc, argv)
int argc;
char **argv;
{
char *line, *s;
progname = argv[0];
initialize_readline (); /* Bind our completer. */
/* Loop reading and executing lines until the user quits. */
for ( ; done == 0; )
{
line = readline ("FileMan: ");
if (!line)
break;
/* Remove leading and trailing whitespace from the line.
Then, if there is anything left, add it to the history list
and execute it. */
s = stripwhite (line);
if (*s)
{
add_history (s);
execute_line (s);
}
free (line);
}
exit (0);
}
/* Execute a command line. */
int
execute_line (line)
char *line;
{
register int i;
COMMAND *command;
char *word;
/* Isolate the command word. */
i = 0;
while (line[i] && whitespace (line[i]))
i++;
word = line + i;
while (line[i] && !whitespace (line[i]))
i++;
if (line[i])
line[i++] = '\0';
command = find_command (word);
if (!command)
{
fprintf (stderr, "%s: No such command for FileMan.\n", word);
return (-1);
}
/* Get argument to command, if any. */
while (whitespace (line[i]))
i++;
word = line + i;
/* Call the function. */
return ((*(command->func)) (word));
}
/* Look up NAME as the name of a command, and return a pointer to that
command. Return a NULL pointer if NAME isn't a command name. */
COMMAND *
find_command (name)
char *name;
{
register int i;
for (i = 0; commands[i].name; i++)
if (strcmp (name, commands[i].name) == 0)
return (&commands[i]);
return ((COMMAND *)NULL);
}
/* Strip whitespace from the start and end of STRING. Return a pointer
into STRING. */
char *
stripwhite (string)
char *string;
{
register char *s, *t;
for (s = string; whitespace (*s); s++)
;
if (*s == 0)
return (s);
t = s + strlen (s) - 1;
while (t > s && whitespace (*t))
t--;
*++t = '\0';
return s;
}
/* **************************************************************** */
/* */
/* Interface to Readline Completion */
/* */
/* **************************************************************** */
char *command_generator PARAMS((const char *, int));
char **fileman_completion PARAMS((const char *, int, int));
/* Tell the GNU Readline library how to complete. We want to try to complete
on command names if this is the first word in the line, or on filenames
if not. */
initialize_readline ()
{
/* Allow conditional parsing of the ~/.inputrc file. */
rl_readline_name = "FileMan";
/* Tell the completer that we want a crack first. */
rl_attempted_completion_function = fileman_completion;
}
/* Attempt to complete on the contents of TEXT. START and END bound the
region of rl_line_buffer that contains the word to complete. TEXT is
the word to complete. We can use the entire contents of rl_line_buffer
in case we want to do some simple parsing. Return the array of matches,
or NULL if there aren't any. */
char **
fileman_completion (text, start, end)
const char *text;
int start, end;
{
char **matches;
matches = (char **)NULL;
/* If this word is at the start of the line, then it is a command
to complete. Otherwise it is the name of a file in the current
directory. */
if (start == 0)
matches = rl_completion_matches (text, command_generator);
return (matches);
}
/* Generator function for command completion. STATE lets us know whether
to start from scratch; without any state (i.e. STATE == 0), then we
start at the top of the list. */
char *
command_generator (text, state)
const char *text;
int state;
{
static int list_index, len;
char *name;
/* If this is a new word to complete, initialize now. This includes
saving the length of TEXT for efficiency, and initializing the index
variable to 0. */
if (!state)
{
list_index = 0;
len = strlen (text);
}
/* Return the next name which partially matches from the command list. */
while (name = commands[list_index].name)
{
list_index++;
if (strncmp (name, text, len) == 0)
return (dupstr(name));
}
/* If no names matched, then return NULL. */
return ((char *)NULL);
}
/* **************************************************************** */
/* */
/* FileMan Commands */
/* */
/* **************************************************************** */
/* String to pass to system (). This is for the LIST, VIEW and RENAME
commands. */
static char syscom[1024];
/* List the file(s) named in arg. */
com_list (arg)
char *arg;
{
if (!arg)
arg = "";
sprintf (syscom, "ls -FClg %s", arg);
return (system (syscom));
}
com_view (arg)
char *arg;
{
if (!valid_argument ("view", arg))
return 1;
#if defined (__MSDOS__)
/* more.com doesn't grok slashes in pathnames */
sprintf (syscom, "less %s", arg);
#else
sprintf (syscom, "more %s", arg);
#endif
return (system (syscom));
}
com_rename (arg)
char *arg;
{
too_dangerous ("rename");
return (1);
}
com_stat (arg)
char *arg;
{
struct stat finfo;
if (!valid_argument ("stat", arg))
return (1);
if (stat (arg, &finfo) == -1)
{
perror (arg);
return (1);
}
printf ("Statistics for `%s':\n", arg);
printf ("%s has %d link%s, and is %d byte%s in length.\n",
arg,
finfo.st_nlink,
(finfo.st_nlink == 1) ? "" : "s",
finfo.st_size,
(finfo.st_size == 1) ? "" : "s");
printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime));
printf (" Last access at: %s", ctime (&finfo.st_atime));
printf (" Last modified at: %s", ctime (&finfo.st_mtime));
return (0);
}
com_delete (arg)
char *arg;
{
too_dangerous ("delete");
return (1);
}
/* Print out help for ARG, or for all of the commands if ARG is
not present. */
com_help (arg)
char *arg;
{
register int i;
int printed = 0;
for (i = 0; commands[i].name; i++)
{
if (!*arg || (strcmp (arg, commands[i].name) == 0))
{
printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc);
printed++;
}
}
if (!printed)
{
printf ("No commands match `%s'. Possibilties are:\n", arg);
for (i = 0; commands[i].name; i++)
{
/* Print in six columns. */
if (printed == 6)
{
printed = 0;
printf ("\n");
}
printf ("%s\t", commands[i].name);
printed++;
}
if (printed)
printf ("\n");
}
return (0);
}
/* Change to the directory ARG. */
com_cd (arg)
char *arg;
{
if (chdir (arg) == -1)
{
perror (arg);
return 1;
}
com_pwd ("");
return (0);
}
/* Print out the current working directory. */
com_pwd (ignore)
char *ignore;
{
char dir[1024], *s;
s = getcwd (dir, sizeof(dir) - 1);
if (s == 0)
{
printf ("Error getting pwd: %s\n", dir);
return 1;
}
printf ("Current directory is %s\n", dir);
return 0;
}
/* The user wishes to quit using this program. Just set DONE non-zero. */
com_quit (arg)
char *arg;
{
done = 1;
return (0);
}
/* Function which tells you that you can't do this. */
too_dangerous (caller)
char *caller;
{
fprintf (stderr,
"%s: Too dangerous for me to distribute. Write it yourself.\n",
caller);
}
/* Return non-zero if ARG is a valid argument for CALLER, else print
an error message and return zero. */
int
valid_argument (caller, arg)
char *caller, *arg;
{
if (!arg || !*arg)
{
fprintf (stderr, "%s: Argument required.\n", caller);
return (0);
}
return (1);
}
</FONT></pre></td></tr></table></P><P>
<A NAME="GNU Free Documentation License"></A>
<HR SIZE="6">
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<H1> A. GNU Free Documentation License </H1>
<!--docid::SEC49::-->
<P>
<center>
Version 1.3, 3 November 2008
</center>
</P><P>
<TABLE><tr><td> </td><td class=display><pre style="font-family: serif">Copyright (C) 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
<A HREF="http://fsf.org/">http://fsf.org/</A>
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</pre></td></tr></table></P><P>
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given on its Title Page, then add an item describing the Modified
Version as stated in the previous sentence.
<P>
<LI>
Preserve the network location, if any, given in the Document for
public access to a Transparent copy of the Document, and likewise
the network locations given in the Document for previous versions
it was based on. These may be placed in the "History" section.
You may omit a network location for a work that was published at
least four years before the Document itself, or if the original
publisher of the version it refers to gives permission.
<P>
<LI>
For any section Entitled "Acknowledgements" or "Dedications", Preserve
the Title of the section, and preserve in the section all the
substance and tone of each of the contributor acknowledgements and/or
dedications given therein.
<P>
<LI>
Preserve all the Invariant Sections of the Document,
unaltered in their text and in their titles. Section numbers
or the equivalent are not considered part of the section titles.
<P>
<LI>
Delete any section Entitled "Endorsements". Such a section
may not be included in the Modified Version.
<P>
<LI>
Do not retitle any existing section to be Entitled "Endorsements" or
to conflict in title with any Invariant Section.
<P>
<LI>
Preserve any Warranty Disclaimers.
</OL>
<P>
If the Modified Version includes new front-matter sections or
appendices that qualify as Secondary Sections and contain no material
copied from the Document, you may at your option designate some or all
of these sections as invariant. To do this, add their titles to the
list of Invariant Sections in the Modified Version's license notice.
These titles must be distinct from any other section titles.
</P><P>
You may add a section Entitled "Endorsements", provided it contains
nothing but endorsements of your Modified Version by various
parties--for example, statements of peer review or that the text has
been approved by an organization as the authoritative definition of a
standard.
</P><P>
You may add a passage of up to five words as a Front-Cover Text, and a
passage of up to 25 words as a Back-Cover Text, to the end of the list
of Cover Texts in the Modified Version. Only one passage of
Front-Cover Text and one of Back-Cover Text may be added by (or
through arrangements made by) any one entity. If the Document already
includes a cover text for the same cover, previously added by you or
by arrangement made by the same entity you are acting on behalf of,
you may not add another; but you may replace the old one, on explicit
permission from the previous publisher that added the old one.
</P><P>
The author(s) and publisher(s) of the Document do not by this License
give permission to use their names for publicity for or to assert or
imply endorsement of any Modified Version.
</P><P>
<LI>
COMBINING DOCUMENTS
<P>
You may combine the Document with other documents released under this
License, under the terms defined in section 4 above for modified
versions, provided that you include in the combination all of the
Invariant Sections of all of the original documents, unmodified, and
list them all as Invariant Sections of your combined work in its
license notice, and that you preserve all their Warranty Disclaimers.
</P><P>
The combined work need only contain one copy of this License, and
multiple identical Invariant Sections may be replaced with a single
copy. If there are multiple Invariant Sections with the same name but
different contents, make the title of each such section unique by
adding at the end of it, in parentheses, the name of the original
author or publisher of that section if known, or else a unique number.
Make the same adjustment to the section titles in the list of
Invariant Sections in the license notice of the combined work.
</P><P>
In the combination, you must combine any sections Entitled "History"
in the various original documents, forming one section Entitled
"History"; likewise combine any sections Entitled "Acknowledgements",
and any sections Entitled "Dedications". You must delete all
sections Entitled "Endorsements."
</P><P>
<LI>
COLLECTIONS OF DOCUMENTS
<P>
You may make a collection consisting of the Document and other documents
released under this License, and replace the individual copies of this
License in the various documents with a single copy that is included in
the collection, provided that you follow the rules of this License for
verbatim copying of each of the documents in all other respects.
</P><P>
You may extract a single document from such a collection, and distribute
it individually under this License, provided you insert a copy of this
License into the extracted document, and follow this License in all
other respects regarding verbatim copying of that document.
</P><P>
<LI>
AGGREGATION WITH INDEPENDENT WORKS
<P>
A compilation of the Document or its derivatives with other separate
and independent documents or works, in or on a volume of a storage or
distribution medium, is called an "aggregate" if the copyright
resulting from the compilation is not used to limit the legal rights
of the compilation's users beyond what the individual works permit.
When the Document is included in an aggregate, this License does not
apply to the other works in the aggregate which are not themselves
derivative works of the Document.
</P><P>
If the Cover Text requirement of section 3 is applicable to these
copies of the Document, then if the Document is less than one half of
the entire aggregate, the Document's Cover Texts may be placed on
covers that bracket the Document within the aggregate, or the
electronic equivalent of covers if the Document is in electronic form.
Otherwise they must appear on printed covers that bracket the whole
aggregate.
</P><P>
<LI>
TRANSLATION
<P>
Translation is considered a kind of modification, so you may
distribute translations of the Document under the terms of section 4.
Replacing Invariant Sections with translations requires special
permission from their copyright holders, but you may include
translations of some or all Invariant Sections in addition to the
original versions of these Invariant Sections. You may include a
translation of this License, and all the license notices in the
Document, and any Warranty Disclaimers, provided that you also include
the original English version of this License and the original versions
of those notices and disclaimers. In case of a disagreement between
the translation and the original version of this License or a notice
or disclaimer, the original version will prevail.
</P><P>
If a section in the Document is Entitled "Acknowledgements",
"Dedications", or "History", the requirement (section 4) to Preserve
its Title (section 1) will typically require changing the actual
title.
</P><P>
<LI>
TERMINATION
<P>
You may not copy, modify, sublicense, or distribute the Document
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense, or distribute it is void, and
will automatically terminate your rights under this License.
</P><P>
However, if you cease all violation of this License, then your license
from a particular copyright holder is reinstated (a) provisionally,
unless and until the copyright holder explicitly and finally
terminates your license, and (b) permanently, if the copyright holder
fails to notify you of the violation by some reasonable means prior to
60 days after the cessation.
</P><P>
Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.
</P><P>
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License. If your rights have been terminated and not permanently
reinstated, receipt of a copy of some or all of the same material does
not give you any rights to use it.
</P><P>
<LI>
FUTURE REVISIONS OF THIS LICENSE
<P>
The Free Software Foundation may publish new, revised versions
of the GNU Free Documentation License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns. See
<A HREF="http://www.gnu.org/copyleft/">http://www.gnu.org/copyleft/</A>.
</P><P>
Each version of the License is given a distinguishing version number.
If the Document specifies that a particular numbered version of this
License "or any later version" applies to it, you have the option of
following the terms and conditions either of that specified version or
of any later version that has been published (not as a draft) by the
Free Software Foundation. If the Document does not specify a version
number of this License, you may choose any version ever published (not
as a draft) by the Free Software Foundation. If the Document
specifies that a proxy can decide which future versions of this
License can be used, that proxy's public statement of acceptance of a
version permanently authorizes you to choose that version for the
Document.
</P><P>
<LI>
RELICENSING
<P>
"Massive Multiauthor Collaboration Site" (or "MMC Site") means any
World Wide Web server that publishes copyrightable works and also
provides prominent facilities for anybody to edit those works. A
public wiki that anybody can edit is an example of such a server. A
"Massive Multiauthor Collaboration" (or "MMC") contained in the
site means any set of copyrightable works thus published on the MMC
site.
</P><P>
"CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0
license published by Creative Commons Corporation, a not-for-profit
corporation with a principal place of business in San Francisco,
California, as well as future copyleft versions of that license
published by that same organization.
</P><P>
"Incorporate" means to publish or republish a Document, in whole or
in part, as part of another Document.
</P><P>
An MMC is "eligible for relicensing" if it is licensed under this
License, and if all works that were first published under this License
somewhere other than this MMC, and subsequently incorporated in whole
or in part into the MMC, (1) had no cover texts or invariant sections,
and (2) were thus incorporated prior to November 1, 2008.
</P><P>
The operator of an MMC Site may republish an MMC contained in the site
under CC-BY-SA on the same site at any time before August 1, 2009,
provided the MMC is eligible for relicensing.
</P><P>
</OL>
<P>
<A NAME="SEC50"></A>
<H2> ADDENDUM: How to use this License for your documents </H2>
<!--docid::SEC50::-->
<P>
To use this License in a document you have written, include a copy of
the License in the document and put the following copyright and
license notices just after the title page:
</P><P>
<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre> Copyright (C) <VAR>year</VAR> <VAR>your name</VAR>.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
Texts. A copy of the license is included in the section entitled ``GNU
Free Documentation License''.
</FONT></pre></td></tr></table></P><P>
If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
replace the "with<small>...</small>Texts." line with this:
</P><P>
<TABLE><tr><td> </td><td class=smallexample><FONT SIZE=-1><pre> with the Invariant Sections being <VAR>list their titles</VAR>, with
the Front-Cover Texts being <VAR>list</VAR>, and with the Back-Cover Texts
being <VAR>list</VAR>.
</FONT></pre></td></tr></table></P><P>
If you have Invariant Sections without Cover Texts, or some other
combination of the three, merge those two alternatives to suit the
situation.
</P><P>
If your document contains nontrivial examples of program code, we
recommend releasing these examples in parallel under your choice of
free software license, such as the GNU General Public License,
to permit their use in free software.
</P><P>
<A NAME="Concept Index"></A>
<HR SIZE="6">
<A NAME="SEC51"></A>
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<H1> Concept Index </H1>
<!--docid::SEC51::-->
<table><tr><th valign=top>Jump to: </th><td><A HREF="readline.html#cp_A" style="text-decoration:none"><b>A</b></A>
<A HREF="readline.html#cp_C" style="text-decoration:none"><b>C</b></A>
<A HREF="readline.html#cp_E" style="text-decoration:none"><b>E</b></A>
<A HREF="readline.html#cp_I" style="text-decoration:none"><b>I</b></A>
<A HREF="readline.html#cp_K" style="text-decoration:none"><b>K</b></A>
<A HREF="readline.html#cp_N" style="text-decoration:none"><b>N</b></A>
<A HREF="readline.html#cp_R" style="text-decoration:none"><b>R</b></A>
<A HREF="readline.html#cp_V" style="text-decoration:none"><b>V</b></A>
<A HREF="readline.html#cp_Y" style="text-decoration:none"><b>Y</b></A>
</td></tr></table><br><P></P>
<TABLE border=0>
<TR><TD></TD><TH ALIGN=LEFT>Index Entry</TH><TH ALIGN=LEFT> Section</TH></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_A"></A>A</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#SEC44">application-specific completion functions</A></TD><TD valign=top><A HREF="readline.html#SEC44">2.6 Custom Completers</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_C"></A>C</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#SEC4">command editing</A></TD><TD valign=top><A HREF="readline.html#SEC4">1.2.1 Readline Bare Essentials</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_E"></A>E</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#SEC4">editing command lines</A></TD><TD valign=top><A HREF="readline.html#SEC4">1.2.1 Readline Bare Essentials</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_I"></A>I</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#SEC9">initialization file, readline</A></TD><TD valign=top><A HREF="readline.html#SEC9">1.3 Readline Init File</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#SEC3">interaction, readline</A></TD><TD valign=top><A HREF="readline.html#SEC3">1.2 Readline Interaction</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_K"></A>K</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX3">kill ring</A></TD><TD valign=top><A HREF="readline.html#SEC6">1.2.3 Readline Killing Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX1">killing text</A></TD><TD valign=top><A HREF="readline.html#SEC6">1.2.3 Readline Killing Commands</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_N"></A>N</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#SEC4">notation, readline</A></TD><TD valign=top><A HREF="readline.html#SEC4">1.2.1 Readline Bare Essentials</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_R"></A>R</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX191">readline, function</A></TD><TD valign=top><A HREF="readline.html#SEC24">2.1 Basic Behavior</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_V"></A>V</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX4">variables, readline</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="cp_Y"></A>Y</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX2">yanking text</A></TD><TD valign=top><A HREF="readline.html#SEC6">1.2.3 Readline Killing Commands</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
</TABLE><P></P><table><tr><th valign=top>Jump to: </th><td><A HREF="readline.html#cp_A" style="text-decoration:none"><b>A</b></A>
<A HREF="readline.html#cp_C" style="text-decoration:none"><b>C</b></A>
<A HREF="readline.html#cp_E" style="text-decoration:none"><b>E</b></A>
<A HREF="readline.html#cp_I" style="text-decoration:none"><b>I</b></A>
<A HREF="readline.html#cp_K" style="text-decoration:none"><b>K</b></A>
<A HREF="readline.html#cp_N" style="text-decoration:none"><b>N</b></A>
<A HREF="readline.html#cp_R" style="text-decoration:none"><b>R</b></A>
<A HREF="readline.html#cp_V" style="text-decoration:none"><b>V</b></A>
<A HREF="readline.html#cp_Y" style="text-decoration:none"><b>Y</b></A>
</td></tr></table><br><P>
<A NAME="Function and Variable Index"></A>
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<H1> Function and Variable Index </H1>
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<table><tr><th valign=top>Jump to: </th><td><A HREF="readline.html#fn__" style="text-decoration:none"><b>_</b></A>
<BR>
<A HREF="readline.html#fn_A" style="text-decoration:none"><b>A</b></A>
<A HREF="readline.html#fn_B" style="text-decoration:none"><b>B</b></A>
<A HREF="readline.html#fn_C" style="text-decoration:none"><b>C</b></A>
<A HREF="readline.html#fn_D" style="text-decoration:none"><b>D</b></A>
<A HREF="readline.html#fn_E" style="text-decoration:none"><b>E</b></A>
<A HREF="readline.html#fn_F" style="text-decoration:none"><b>F</b></A>
<A HREF="readline.html#fn_H" style="text-decoration:none"><b>H</b></A>
<A HREF="readline.html#fn_I" style="text-decoration:none"><b>I</b></A>
<A HREF="readline.html#fn_K" style="text-decoration:none"><b>K</b></A>
<A HREF="readline.html#fn_M" style="text-decoration:none"><b>M</b></A>
<A HREF="readline.html#fn_N" style="text-decoration:none"><b>N</b></A>
<A HREF="readline.html#fn_O" style="text-decoration:none"><b>O</b></A>
<A HREF="readline.html#fn_P" style="text-decoration:none"><b>P</b></A>
<A HREF="readline.html#fn_Q" style="text-decoration:none"><b>Q</b></A>
<A HREF="readline.html#fn_R" style="text-decoration:none"><b>R</b></A>
<A HREF="readline.html#fn_S" style="text-decoration:none"><b>S</b></A>
<A HREF="readline.html#fn_T" style="text-decoration:none"><b>T</b></A>
<A HREF="readline.html#fn_U" style="text-decoration:none"><b>U</b></A>
<A HREF="readline.html#fn_V" style="text-decoration:none"><b>V</b></A>
<A HREF="readline.html#fn_Y" style="text-decoration:none"><b>Y</b></A>
</td></tr></table><br><P></P>
<TABLE border=0>
<TR><TD></TD><TH ALIGN=LEFT>Index Entry</TH><TH ALIGN=LEFT> Section</TH></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn__"></A>_</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX307"><CODE>_rl_digit_p</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX310"><CODE>_rl_digit_value</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX306"><CODE>_rl_lowercase_p</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX309"><CODE>_rl_to_lower</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX308"><CODE>_rl_to_upper</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX305"><CODE>_rl_uppercase_p</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_A"></A>A</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX156"><CODE>abort (C-g)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX157"><CODE>abort (C-g)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX52"><CODE>accept-line (Newline or Return)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX53"><CODE>accept-line (Newline or Return)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_B"></A>B</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX42"><CODE>backward-char (C-b)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX43"><CODE>backward-char (C-b)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX80"><CODE>backward-delete-char (Rubout)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX81"><CODE>backward-delete-char (Rubout)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX104"><CODE>backward-kill-line (C-x Rubout)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX105"><CODE>backward-kill-line (C-x Rubout)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX112"><CODE>backward-kill-word (M-<KBD>DEL</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX113"><CODE>backward-kill-word (M-<KBD>DEL</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX46"><CODE>backward-word (M-b)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX47"><CODE>backward-word (M-b)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX58"><CODE>beginning-of-history (M-&#60;)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX59"><CODE>beginning-of-history (M-&#60;)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX36"><CODE>beginning-of-line (C-a)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX37"><CODE>beginning-of-line (C-a)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX5">bell-style</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX6">bind-tty-special-chars</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_C"></A>C</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX152"><CODE>call-last-kbd-macro (C-x e)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX153"><CODE>call-last-kbd-macro (C-x e)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX98"><CODE>capitalize-word (M-c)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX99"><CODE>capitalize-word (M-c)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX172"><CODE>character-search (C-])</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX173"><CODE>character-search (C-])</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX174"><CODE>character-search-backward (M-C-])</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX175"><CODE>character-search-backward (M-C-])</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX48"><CODE>clear-screen (C-l)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX49"><CODE>clear-screen (C-l)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX7">comment-begin</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX136"><CODE>complete (<KBD>TAB</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX137"><CODE>complete (<KBD>TAB</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX8">completion-display-width</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX9">completion-ignore-case</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX10">completion-map-case</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX11">completion-prefix-display-length</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX12">completion-query-items</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX13">convert-meta</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX124"><CODE>copy-backward-word ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX125"><CODE>copy-backward-word ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX126"><CODE>copy-forward-word ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX127"><CODE>copy-forward-word ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX122"><CODE>copy-region-as-kill ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX123"><CODE>copy-region-as-kill ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_D"></A>D</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX78"><CODE>delete-char (C-d)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX79"><CODE>delete-char (C-d)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX146"><CODE>delete-char-or-list ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX147"><CODE>delete-char-or-list ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX118"><CODE>delete-horizontal-space ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX119"><CODE>delete-horizontal-space ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX132"><CODE>digit-argument (<KBD>M-0</KBD>, <KBD>M-1</KBD>, <small>...</small> <KBD>M--</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC18">1.4.5 Specifying Numeric Arguments</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX133"><CODE>digit-argument (<KBD>M-0</KBD>, <KBD>M-1</KBD>, <small>...</small> <KBD>M--</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC18">1.4.5 Specifying Numeric Arguments</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX14">disable-completion</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX158"><CODE>do-uppercase-version (M-a, M-b, M-<VAR>x</VAR>, <small>...</small>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX159"><CODE>do-uppercase-version (M-a, M-b, M-<VAR>x</VAR>, <small>...</small>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX96"><CODE>downcase-word (M-l)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX97"><CODE>downcase-word (M-l)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX180"><CODE>dump-functions ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX181"><CODE>dump-functions ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX184"><CODE>dump-macros ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX185"><CODE>dump-macros ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX182"><CODE>dump-variables ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX183"><CODE>dump-variables ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_E"></A>E</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX15">editing-mode</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX186"><CODE>emacs-editing-mode (C-e)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX187"><CODE>emacs-editing-mode (C-e)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX16">enable-keypad</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX150"><CODE>end-kbd-macro (C-x ))</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX151"><CODE>end-kbd-macro (C-x ))</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX60"><CODE>end-of-history (M-&#62;)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX61"><CODE>end-of-history (M-&#62;)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX38"><CODE>end-of-line (C-e)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX39"><CODE>end-of-line (C-e)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX170"><CODE>exchange-point-and-mark (C-x C-x)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX171"><CODE>exchange-point-and-mark (C-x C-x)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX17">expand-tilde</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_F"></A>F</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX82"><CODE>forward-backward-delete-char ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX83"><CODE>forward-backward-delete-char ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX40"><CODE>forward-char (C-f)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX41"><CODE>forward-char (C-f)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX64"><CODE>forward-search-history (C-s)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX65"><CODE>forward-search-history (C-s)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX44"><CODE>forward-word (M-f)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX45"><CODE>forward-word (M-f)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_H"></A>H</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX18">history-preserve-point</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX72"><CODE>history-search-backward ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX73"><CODE>history-search-backward ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX70"><CODE>history-search-forward ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX71"><CODE>history-search-forward ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX19">history-size</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX20">horizontal-scroll-mode</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_I"></A>I</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX21">input-meta</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX178"><CODE>insert-comment (M-#)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX179"><CODE>insert-comment (M-#)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX140"><CODE>insert-completions (M-*)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX141"><CODE>insert-completions (M-*)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX23">isearch-terminators</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_K"></A>K</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX24">keymap</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX102"><CODE>kill-line (C-k)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX103"><CODE>kill-line (C-k)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX120"><CODE>kill-region ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX121"><CODE>kill-region ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX108"><CODE>kill-whole-line ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX109"><CODE>kill-whole-line ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX110"><CODE>kill-word (M-d)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX111"><CODE>kill-word (M-d)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_M"></A>M</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX25">mark-modified-lines</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX26">mark-symlinked-directories</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX27">match-hidden-files</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX142"><CODE>menu-complete ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX143"><CODE>menu-complete ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX144"><CODE>menu-complete-backward ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX145"><CODE>menu-complete-backward ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX28">menu-complete-display-prefix</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX22">meta-flag</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_N"></A>N</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX56"><CODE>next-history (C-n)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX57"><CODE>next-history (C-n)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX68"><CODE>non-incremental-forward-search-history (M-n)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX69"><CODE>non-incremental-forward-search-history (M-n)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX66"><CODE>non-incremental-reverse-search-history (M-p)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX67"><CODE>non-incremental-reverse-search-history (M-p)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_O"></A>O</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX29">output-meta</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX100"><CODE>overwrite-mode ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX101"><CODE>overwrite-mode ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_P"></A>P</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX30">page-completions</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX138"><CODE>possible-completions (M-?)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX139"><CODE>possible-completions (M-?)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX160"><CODE>prefix-meta (<KBD>ESC</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX161"><CODE>prefix-meta (<KBD>ESC</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX54"><CODE>previous-history (C-p)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX55"><CODE>previous-history (C-p)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_Q"></A>Q</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX84"><CODE>quoted-insert (C-q or C-v)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX85"><CODE>quoted-insert (C-q or C-v)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_R"></A>R</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX154"><CODE>re-read-init-file (C-x C-r)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX155"><CODE>re-read-init-file (C-x C-r)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX190"><CODE>readline</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC24">2.1 Basic Behavior</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX50"><CODE>redraw-current-line ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX51"><CODE>redraw-current-line ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC14">1.4.1 Commands For Moving</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX62"><CODE>reverse-search-history (C-r)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX63"><CODE>reverse-search-history (C-r)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX31">revert-all-at-newline</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX164"><CODE>revert-line (M-r)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX165"><CODE>revert-line (M-r)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX227"><CODE>rl_add_defun</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC30">2.4.1 Naming a Function</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX260"><CODE>rl_add_funmap_entry</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX263"><CODE>rl_add_undo</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX303"><CODE>rl_alphabetic</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX203">rl_already_prompted</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX344">rl_attempted_completion_function</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX369">rl_attempted_completion_over</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX353">rl_basic_quote_characters</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX352">rl_basic_word_break_characters</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX261"><CODE>rl_begin_undo_group</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX237"><CODE>rl_bind_key</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX239"><CODE>rl_bind_key_if_unbound</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX240"><CODE>rl_bind_key_if_unbound_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX238"><CODE>rl_bind_key_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX245"><CODE>rl_bind_keyseq</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX248"><CODE>rl_bind_keyseq_if_unbound</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX249"><CODE>rl_bind_keyseq_if_unbound_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX246"><CODE>rl_bind_keyseq_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX221">rl_binding_keymap</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX318"><CODE>rl_callback_handler_install</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC41">2.4.12 Alternate Interface</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX320"><CODE>rl_callback_handler_remove</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC41">2.4.12 Alternate Interface</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX319"><CODE>rl_callback_read_char</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC41">2.4.12 Alternate Interface</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX321">rl_catch_signals</A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX322">rl_catch_sigwinch</A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX347">rl_char_is_quoted_p</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX323"><CODE>rl_cleanup_after_signal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX275"><CODE>rl_clear_message</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX289"><CODE>rl_clear_pending_input</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX332"><CODE>rl_clear_signals</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX333"><CODE>rl_complete</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC45">2.6.1 How Completing Works</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX336"><CODE>rl_complete</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX335"><CODE>rl_complete_internal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX356">rl_completer_quote_characters</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX354">rl_completer_word_break_characters</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX360">rl_completion_append_character</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX351">rl_completion_display_matches_hook</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX334">rl_completion_entry_function</A></TD><TD valign=top><A HREF="readline.html#SEC45">2.6.1 How Completing Works</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX343">rl_completion_entry_function</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX364">rl_completion_found_quote</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX372">rl_completion_invoking_key</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX365">rl_completion_mark_symlink_dirs</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX340"><CODE>rl_completion_matches</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX339"><CODE>rl_completion_mode</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX359">rl_completion_query_items</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX362">rl_completion_quote_character</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX361">rl_completion_suppress_append</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX363">rl_completion_suppress_quote</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX371">rl_completion_type</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX355">rl_completion_word_break_hook</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX229"><CODE>rl_copy_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX282"><CODE>rl_copy_text</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC36">2.4.7 Modifying Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX272"><CODE>rl_crlf</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX281"><CODE>rl_delete_text</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC36">2.4.7 Modifying Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX219">rl_deprep_term_function</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX292"><CODE>rl_deprep_terminal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC38">2.4.9 Terminal Management</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX302"><CODE>rl_ding</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX349">rl_directory_completion_hook</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX231"><CODE>rl_discard_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX199">rl_dispatching</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX304"><CODE>rl_display_match_list</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX202">rl_display_prompt</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX265"><CODE>rl_do_undo</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX196">rl_done</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX326"><CODE>rl_echo_signal_char</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX226">rl_editing_mode</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX194">rl_end</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX262"><CODE>rl_end_undo_group</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX200">rl_erase_empty_line</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX215">rl_event_hook</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX288"><CODE>rl_execute_next</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX220">rl_executing_keymap</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX222">rl_executing_macro</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX278"><CODE>rl_expand_prompt</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX224">rl_explicit_arg</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX300"><CODE>rl_extend_line_buffer</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX367">rl_filename_completion_desired</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX341"><CODE>rl_filename_completion_function</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX346">rl_filename_dequoting_function</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX357">rl_filename_quote_characters</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX368">rl_filename_quoting_desired</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX345">rl_filename_quoting_function</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX350">rl_filename_rewrite_hook</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX268"><CODE>rl_forced_update_display</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX298"><CODE>rl_free</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX232"><CODE>rl_free_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX324"><CODE>rl_free_line_state</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX264"><CODE>rl_free_undo_list</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX257"><CODE>rl_function_dumper</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX254"><CODE>rl_function_of_keyseq</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX259"><CODE>rl_funmap_names</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX250"><CODE>rl_generic_bind</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX233"><CODE>rl_get_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX235"><CODE>rl_get_keymap_by_name</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX236"><CODE>rl_get_keymap_name</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX329"><CODE>rl_get_screen_size</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX317"><CODE>rl_get_termcap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX286"><CODE>rl_getc</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX216">rl_getc_function</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX206">rl_gnu_readline_p</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX366">rl_ignore_completion_duplicates</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX348">rl_ignore_some_completions_function</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX373">rl_inhibit_completion</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX301"><CODE>rl_initialize</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX338"><CODE>rl_insert_completions</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX280"><CODE>rl_insert_text</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC36">2.4.7 Modifying Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX209">rl_instream</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX255"><CODE>rl_invoking_keyseqs</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX256"><CODE>rl_invoking_keyseqs_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX283"><CODE>rl_kill_text</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC36">2.4.7 Modifying Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX212">rl_last_func</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX204">rl_library_version</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX192">rl_line_buffer</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX258"><CODE>rl_list_funmap_names</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX311"><CODE>rl_macro_bind</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX312"><CODE>rl_macro_dumper</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX228"><CODE>rl_make_bare_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX230"><CODE>rl_make_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX195">rl_mark</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX274"><CODE>rl_message</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX266"><CODE>rl_modifying</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX253"><CODE>rl_named_function</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX197">rl_num_chars_to_read</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX225">rl_numeric_arg</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX269"><CODE>rl_on_new_line</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX270"><CODE>rl_on_new_line_with_prompt</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX210">rl_outstream</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX251"><CODE>rl_parse_and_bind</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX198">rl_pending_input</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX193">rl_point</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX337"><CODE>rl_possible_completions</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX214">rl_pre_input_hook</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX211">rl_prefer_env_winsize</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX218">rl_prep_term_function</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX291"><CODE>rl_prep_terminal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC38">2.4.9 Terminal Management</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX201">rl_prompt</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX284"><CODE>rl_push_macro_input</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC36">2.4.7 Modifying Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX252"><CODE>rl_read_init_file</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX285"><CODE>rl_read_key</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX208">rl_readline_name</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX223">rl_readline_state</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX205">rl_readline_version</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX267"><CODE>rl_redisplay</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX217">rl_redisplay_function</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX299"><CODE>rl_replace_line</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX325"><CODE>rl_reset_after_signal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX271"><CODE>rl_reset_line_state</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX330"><CODE>rl_reset_screen_size</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX295"><CODE>rl_reset_terminal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC38">2.4.9 Terminal Management</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX327"><CODE>rl_resize_terminal</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX277"><CODE>rl_restore_prompt</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX297"><CODE>rl_restore_state</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX276"><CODE>rl_save_prompt</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX296"><CODE>rl_save_state</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC39">2.4.10 Utility Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX247"><CODE>rl_set_key</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX290"><CODE>rl_set_keyboard_input_timeout</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX234"><CODE>rl_set_keymap</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX316"><CODE>rl_set_paren_blink_timeout</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX279"><CODE>rl_set_prompt</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX328"><CODE>rl_set_screen_size</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX331"><CODE>rl_set_signals</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC43">2.5 Readline Signal Handling</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX273"><CODE>rl_show_char</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC35">2.4.6 Redisplay</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX370">rl_sort_completion_matches</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX358">rl_special_prefixes</A></TD><TD valign=top><A HREF="readline.html#SEC47">2.6.3 Completion Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX213">rl_startup_hook</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX287"><CODE>rl_stuff_char</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC37">2.4.8 Character Input</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX207">rl_terminal_name</A></TD><TD valign=top><A HREF="readline.html#SEC28">2.3 Readline Variables</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX293"><CODE>rl_tty_set_default_bindings</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC38">2.4.9 Terminal Management</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX294"><CODE>rl_tty_unset_default_bindings</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC38">2.4.9 Terminal Management</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX244"><CODE>rl_unbind_command_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX243"><CODE>rl_unbind_function_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX241"><CODE>rl_unbind_key</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX242"><CODE>rl_unbind_key_in_map</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC32">2.4.3 Binding Keys</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX342"><CODE>rl_username_completion_function</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC46">2.6.2 Completion Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX313"><CODE>rl_variable_bind</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX315"><CODE>rl_variable_dumper</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX314"><CODE>rl_variable_value</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_S"></A>S</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX88"><CODE>self-insert (a, b, A, 1, !, <small>...</small>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX89"><CODE>self-insert (a, b, A, 1, !, <small>...</small>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX168"><CODE>set-mark (C-@)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX169"><CODE>set-mark (C-@)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX32">show-all-if-ambiguous</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX33">show-all-if-unmodified</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX34">skip-completed-text</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX176"><CODE>skip-csi-sequence ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX177"><CODE>skip-csi-sequence ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX148"><CODE>start-kbd-macro (C-x ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX149"><CODE>start-kbd-macro (C-x ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_T"></A>T</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX86"><CODE>tab-insert (M-<KBD>TAB</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX87"><CODE>tab-insert (M-<KBD>TAB</KBD>)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX166"><CODE>tilde-expand (M-~)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX167"><CODE>tilde-expand (M-~)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX90"><CODE>transpose-chars (C-t)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX91"><CODE>transpose-chars (C-t)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX92"><CODE>transpose-words (M-t)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX93"><CODE>transpose-words (M-t)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_U"></A>U</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX162"><CODE>undo (C-_ or C-x C-u)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX163"><CODE>undo (C-_ or C-x C-u)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX134"><CODE>universal-argument ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC18">1.4.5 Specifying Numeric Arguments</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX135"><CODE>universal-argument ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC18">1.4.5 Specifying Numeric Arguments</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX116"><CODE>unix-filename-rubout ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX117"><CODE>unix-filename-rubout ()</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX106"><CODE>unix-line-discard (C-u)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX107"><CODE>unix-line-discard (C-u)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX114"><CODE>unix-word-rubout (C-w)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX115"><CODE>unix-word-rubout (C-w)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX94"><CODE>upcase-word (M-u)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX95"><CODE>upcase-word (M-u)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_V"></A>V</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX188"><CODE>vi-editing-mode (M-C-j)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX189"><CODE>vi-editing-mode (M-C-j)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX35">visible-stats</A></TD><TD valign=top><A HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
<TR><TH><A NAME="fn_Y"></A>Y</TH><TD></TD><TD></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX128"><CODE>yank (C-y)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX129"><CODE>yank (C-y)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX76"><CODE>yank-last-arg (M-. or M-_)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX77"><CODE>yank-last-arg (M-. or M-_)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX74"><CODE>yank-nth-arg (M-C-y)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX75"><CODE>yank-nth-arg (M-C-y)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX130"><CODE>yank-pop (M-y)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD></TD><TD valign=top><A HREF="readline.html#IDX131"><CODE>yank-pop (M-y)</CODE></A></TD><TD valign=top><A HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A></TD></TR>
<TR><TD COLSPAN=3> <HR></TD></TR>
</TABLE><P></P><table><tr><th valign=top>Jump to: </th><td><A HREF="readline.html#fn__" style="text-decoration:none"><b>_</b></A>
<BR>
<A HREF="readline.html#fn_A" style="text-decoration:none"><b>A</b></A>
<A HREF="readline.html#fn_B" style="text-decoration:none"><b>B</b></A>
<A HREF="readline.html#fn_C" style="text-decoration:none"><b>C</b></A>
<A HREF="readline.html#fn_D" style="text-decoration:none"><b>D</b></A>
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<A HREF="readline.html#fn_P" style="text-decoration:none"><b>P</b></A>
<A HREF="readline.html#fn_Q" style="text-decoration:none"><b>Q</b></A>
<A HREF="readline.html#fn_R" style="text-decoration:none"><b>R</b></A>
<A HREF="readline.html#fn_S" style="text-decoration:none"><b>S</b></A>
<A HREF="readline.html#fn_T" style="text-decoration:none"><b>T</b></A>
<A HREF="readline.html#fn_U" style="text-decoration:none"><b>U</b></A>
<A HREF="readline.html#fn_V" style="text-decoration:none"><b>V</b></A>
<A HREF="readline.html#fn_Y" style="text-decoration:none"><b>Y</b></A>
</td></tr></table><br><P>
<HR SIZE="6">
<A NAME="SEC_Contents"></A>
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H1>Table of Contents</H1>
<UL>
<A NAME="TOC1" HREF="readline.html#SEC1">1. Command Line Editing</A>
<BR>
<UL>
<A NAME="TOC2" HREF="readline.html#SEC2">1.1 Introduction to Line Editing</A>
<BR>
<A NAME="TOC3" HREF="readline.html#SEC3">1.2 Readline Interaction</A>
<BR>
<UL>
<A NAME="TOC4" HREF="readline.html#SEC4">1.2.1 Readline Bare Essentials</A>
<BR>
<A NAME="TOC5" HREF="readline.html#SEC5">1.2.2 Readline Movement Commands</A>
<BR>
<A NAME="TOC6" HREF="readline.html#SEC6">1.2.3 Readline Killing Commands</A>
<BR>
<A NAME="TOC7" HREF="readline.html#SEC7">1.2.4 Readline Arguments</A>
<BR>
<A NAME="TOC8" HREF="readline.html#SEC8">1.2.5 Searching for Commands in the History</A>
<BR>
</UL>
<A NAME="TOC9" HREF="readline.html#SEC9">1.3 Readline Init File</A>
<BR>
<UL>
<A NAME="TOC10" HREF="readline.html#SEC10">1.3.1 Readline Init File Syntax</A>
<BR>
<A NAME="TOC11" HREF="readline.html#SEC11">1.3.2 Conditional Init Constructs</A>
<BR>
<A NAME="TOC12" HREF="readline.html#SEC12">1.3.3 Sample Init File</A>
<BR>
</UL>
<A NAME="TOC13" HREF="readline.html#SEC13">1.4 Bindable Readline Commands</A>
<BR>
<UL>
<A NAME="TOC14" HREF="readline.html#SEC14">1.4.1 Commands For Moving</A>
<BR>
<A NAME="TOC15" HREF="readline.html#SEC15">1.4.2 Commands For Manipulating The History</A>
<BR>
<A NAME="TOC16" HREF="readline.html#SEC16">1.4.3 Commands For Changing Text</A>
<BR>
<A NAME="TOC17" HREF="readline.html#SEC17">1.4.4 Killing And Yanking</A>
<BR>
<A NAME="TOC18" HREF="readline.html#SEC18">1.4.5 Specifying Numeric Arguments</A>
<BR>
<A NAME="TOC19" HREF="readline.html#SEC19">1.4.6 Letting Readline Type For You</A>
<BR>
<A NAME="TOC20" HREF="readline.html#SEC20">1.4.7 Keyboard Macros</A>
<BR>
<A NAME="TOC21" HREF="readline.html#SEC21">1.4.8 Some Miscellaneous Commands</A>
<BR>
</UL>
<A NAME="TOC22" HREF="readline.html#SEC22">1.5 Readline vi Mode</A>
<BR>
</UL>
<A NAME="TOC23" HREF="readline.html#SEC23">2. Programming with GNU Readline</A>
<BR>
<UL>
<A NAME="TOC24" HREF="readline.html#SEC24">2.1 Basic Behavior</A>
<BR>
<A NAME="TOC25" HREF="readline.html#SEC25">2.2 Custom Functions</A>
<BR>
<UL>
<A NAME="TOC26" HREF="readline.html#SEC26">2.2.1 Readline Typedefs</A>
<BR>
<A NAME="TOC27" HREF="readline.html#SEC27">2.2.2 Writing a New Function</A>
<BR>
</UL>
<A NAME="TOC28" HREF="readline.html#SEC28">2.3 Readline Variables</A>
<BR>
<A NAME="TOC29" HREF="readline.html#SEC29">2.4 Readline Convenience Functions</A>
<BR>
<UL>
<A NAME="TOC30" HREF="readline.html#SEC30">2.4.1 Naming a Function</A>
<BR>
<A NAME="TOC31" HREF="readline.html#SEC31">2.4.2 Selecting a Keymap</A>
<BR>
<A NAME="TOC32" HREF="readline.html#SEC32">2.4.3 Binding Keys</A>
<BR>
<A NAME="TOC33" HREF="readline.html#SEC33">2.4.4 Associating Function Names and Bindings</A>
<BR>
<A NAME="TOC34" HREF="readline.html#SEC34">2.4.5 Allowing Undoing</A>
<BR>
<A NAME="TOC35" HREF="readline.html#SEC35">2.4.6 Redisplay</A>
<BR>
<A NAME="TOC36" HREF="readline.html#SEC36">2.4.7 Modifying Text</A>
<BR>
<A NAME="TOC37" HREF="readline.html#SEC37">2.4.8 Character Input</A>
<BR>
<A NAME="TOC38" HREF="readline.html#SEC38">2.4.9 Terminal Management</A>
<BR>
<A NAME="TOC39" HREF="readline.html#SEC39">2.4.10 Utility Functions</A>
<BR>
<A NAME="TOC40" HREF="readline.html#SEC40">2.4.11 Miscellaneous Functions</A>
<BR>
<A NAME="TOC41" HREF="readline.html#SEC41">2.4.12 Alternate Interface</A>
<BR>
<A NAME="TOC42" HREF="readline.html#SEC42">2.4.13 A Readline Example</A>
<BR>
</UL>
<A NAME="TOC43" HREF="readline.html#SEC43">2.5 Readline Signal Handling</A>
<BR>
<A NAME="TOC44" HREF="readline.html#SEC44">2.6 Custom Completers</A>
<BR>
<UL>
<A NAME="TOC45" HREF="readline.html#SEC45">2.6.1 How Completing Works</A>
<BR>
<A NAME="TOC46" HREF="readline.html#SEC46">2.6.2 Completion Functions</A>
<BR>
<A NAME="TOC47" HREF="readline.html#SEC47">2.6.3 Completion Variables</A>
<BR>
<A NAME="TOC48" HREF="readline.html#SEC48">2.6.4 A Short Completion Example</A>
<BR>
</UL>
</UL>
<A NAME="TOC49" HREF="readline.html#SEC49">A. GNU Free Documentation License</A>
<BR>
<A NAME="TOC51" HREF="readline.html#SEC51">Concept Index</A>
<BR>
<A NAME="TOC52" HREF="readline.html#SEC52">Function and Variable Index</A>
<BR>
</UL>
<HR SIZE=1>
<A NAME="SEC_OVERVIEW"></A>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_Contents">Contents</A>]</TD>
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC51">Index</A>]</TD>
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="readline.html#SEC_About"> ? </A>]</TD>
</TR></TABLE>
<H1>Short Table of Contents</H1>
<BLOCKQUOTE>
<A NAME="TOC1" HREF="readline.html#SEC1">1. Command Line Editing</A>
<BR>
<A NAME="TOC23" HREF="readline.html#SEC23">2. Programming with GNU Readline</A>
<BR>
<A NAME="TOC49" HREF="readline.html#SEC49">A. GNU Free Documentation License</A>
<BR>
<A NAME="TOC51" HREF="readline.html#SEC51">Concept Index</A>
<BR>
<A NAME="TOC52" HREF="readline.html#SEC52">Function and Variable Index</A>
<BR>
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<H1>About this document</H1>
This document was generated by <I>Chet Ramey</I> on <I>February, 8 2011</I>
using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
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The buttons in the navigation panels have the following meaning:
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<TH> Button </TH>
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where the <STRONG> Example </STRONG> assumes that the current position
is at <STRONG> Subsubsection One-Two-Three </STRONG> of a document of
the following structure:
<UL>
<LI> 1. Section One </LI>
<UL>
<LI>1.1 Subsection One-One</LI>
<UL>
<LI> ... </LI>
</UL>
<LI>1.2 Subsection One-Two</LI>
<UL>
<LI>1.2.1 Subsubsection One-Two-One
</LI><LI>1.2.2 Subsubsection One-Two-Two
</LI><LI>1.2.3 Subsubsection One-Two-Three <STRONG>
<== Current Position </STRONG>
</LI><LI>1.2.4 Subsubsection One-Two-Four
</LI></UL>
<LI>1.3 Subsection One-Three</LI>
<UL>
<LI> ... </LI>
</UL>
<LI>1.4 Subsection One-Four</LI>
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