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-rw-r--r--readline/histexpand.c83
1 files changed, 44 insertions, 39 deletions
diff --git a/readline/histexpand.c b/readline/histexpand.c
index 8fb3798b7ca..fc133036493 100644
--- a/readline/histexpand.c
+++ b/readline/histexpand.c
@@ -1,6 +1,6 @@
/* histexpand.c -- history expansion. */
-/* Copyright (C) 1989-2010 Free Software Foundation, Inc.
+/* Copyright (C) 1989-2012 Free Software Foundation, Inc.
This file contains the GNU History Library (History), a set of
routines for managing the text of previously typed lines.
@@ -50,6 +50,7 @@
#define HISTORY_WORD_DELIMITERS " \t\n;&()|<>"
#define HISTORY_QUOTE_CHARACTERS "\"'`"
+#define HISTORY_EVENT_DELIMITERS "^$*%-"
#define slashify_in_quotes "\\`\"$"
@@ -62,6 +63,10 @@ static char *subst_rhs;
static int subst_lhs_len;
static int subst_rhs_len;
+/* Characters that delimit history event specifications and separate event
+ specifications from word designators. Static for now */
+static char *history_event_delimiter_chars = HISTORY_EVENT_DELIMITERS;
+
static char *get_history_word_specifier PARAMS((char *, char *, int *));
static int history_tokenize_word PARAMS((const char *, int));
static char **history_tokenize_internal PARAMS((const char *, int, int *));
@@ -112,7 +117,6 @@ rl_linebuf_func_t *history_inhibit_expansion_function;
/* The last string searched for by a !?string? search. */
static char *search_string;
-
/* The last string matched by a !?string? search. */
static char *search_match;
@@ -225,6 +229,7 @@ get_history_event (string, caller_index, delimiting_quote)
#endif /* HANDLE_MULTIBYTE */
if ((!substring_okay && (whitespace (c) || c == ':' ||
+ (history_event_delimiter_chars && member (c, history_event_delimiter_chars)) ||
(history_search_delimiter_chars && member (c, history_search_delimiter_chars)) ||
string[i] == delimiting_quote)) ||
string[i] == '\n' ||
@@ -272,6 +277,8 @@ get_history_event (string, caller_index, delimiting_quote)
if (local_index == 0 || substring_okay)
{
entry = current_history ();
+ if (entry == 0)
+ FAIL_SEARCH ();
history_offset = history_length;
/* If this was a substring search, then remember the
@@ -519,9 +526,9 @@ postproc_subst_rhs ()
the returned string. Returns the new index into string in
*END_INDEX_PTR, and the expanded specifier in *RET_STRING. */
static int
-history_expand_internal (string, start, end_index_ptr, ret_string, current_line)
+history_expand_internal (string, start, qc, end_index_ptr, ret_string, current_line)
char *string;
- int start, *end_index_ptr;
+ int start, qc, *end_index_ptr;
char **ret_string;
char *current_line; /* for !# */
{
@@ -557,30 +564,7 @@ history_expand_internal (string, start, end_index_ptr, ret_string, current_line)
event = current_line;
}
else
- {
- int quoted_search_delimiter = 0;
-
- /* If the character before this `!' is a double or single
- quote, then this expansion takes place inside of the
- quoted string. If we have to search for some text ("!foo"),
- allow the delimiter to end the search string. */
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- {
- int ch, l;
- l = _rl_find_prev_mbchar (string, i, MB_FIND_ANY);
- ch = string[l];
- /* XXX - original patch had i - 1 ??? If i == 0 it would fail. */
- if (i && (ch == '\'' || ch == '"'))
- quoted_search_delimiter = ch;
- }
- else
-#endif /* HANDLE_MULTIBYTE */
- if (i && (string[i - 1] == '\'' || string[i - 1] == '"'))
- quoted_search_delimiter = string[i - 1];
-
- event = get_history_event (string, &i, quoted_search_delimiter);
- }
+ event = get_history_event (string, &i, qc);
if (event == 0)
{
@@ -854,7 +838,7 @@ history_expand_internal (string, start, end_index_ptr, ret_string, current_line)
}
i += 2;
}
- /* Done with modfiers. */
+ /* Done with modifiers. */
/* Believe it or not, we have to back the pointer up by one. */
--i;
@@ -894,7 +878,7 @@ history_expand_internal (string, start, end_index_ptr, ret_string, current_line)
1) If expansions did take place
2) If the `p' modifier was given and the caller should print the result
- If an error ocurred in expansion, then OUTPUT contains a descriptive
+ If an error occurred in expansion, then OUTPUT contains a descriptive
error message. */
#define ADD_STRING(s) \
@@ -928,7 +912,7 @@ history_expand (hstring, output)
char **output;
{
register int j;
- int i, r, l, passc, cc, modified, eindex, only_printing, dquote, flag;
+ int i, r, l, passc, cc, modified, eindex, only_printing, dquote, squote, flag;
char *string;
/* The output string, and its length. */
@@ -991,7 +975,7 @@ history_expand (hstring, output)
/* `!' followed by one of the characters in history_no_expand_chars
is NOT an expansion. */
- for (i = dquote = 0; string[i]; i++)
+ for (i = dquote = squote = 0; string[i]; i++)
{
#if defined (HANDLE_MULTIBYTE)
if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
@@ -1012,6 +996,7 @@ history_expand (hstring, output)
history expansion performed on it.
Skip the rest of the line and break out of the loop. */
if (history_comment_char && string[i] == history_comment_char &&
+ dquote == 0 &&
(i == 0 || member (string[i - 1], history_word_delimiters)))
{
while (string[i])
@@ -1022,6 +1007,13 @@ history_expand (hstring, output)
{
if (cc == 0 || member (cc, history_no_expand_chars))
continue;
+ /* DQUOTE won't be set unless history_quotes_inhibit_expansion
+ is set. The idea here is to treat double-quoted strings the
+ same as the word outside double quotes; in effect making the
+ double quote part of history_no_expand_chars when DQUOTE is
+ set. */
+ else if (dquote && cc == '"')
+ continue;
/* If the calling application has set
history_inhibit_expansion_function to a function that checks
for special cases that should not be history expanded,
@@ -1071,9 +1063,9 @@ history_expand (hstring, output)
}
/* Extract and perform the substitution. */
- for (passc = dquote = i = j = 0; i < l; i++)
+ for (passc = dquote = squote = i = j = 0; i < l; i++)
{
- int tchar = string[i];
+ int qc, tchar = string[i];
if (passc)
{
@@ -1130,8 +1122,14 @@ history_expand (hstring, output)
case '\'':
{
/* If history_quotes_inhibit_expansion is set, single quotes
- inhibit history expansion. */
- if (dquote == 0 && history_quotes_inhibit_expansion)
+ inhibit history expansion, otherwise they are treated like
+ double quotes. */
+ if (squote)
+ {
+ squote = 0;
+ ADD_CHAR (tchar);
+ }
+ else if (dquote == 0 && history_quotes_inhibit_expansion)
{
int quote, slen;
@@ -1146,13 +1144,19 @@ history_expand (hstring, output)
ADD_STRING (temp);
xfree (temp);
}
+ else if (dquote == 0 && squote == 0 && history_quotes_inhibit_expansion == 0)
+ {
+ squote = 1;
+ ADD_CHAR (string[i]);
+ }
else
ADD_CHAR (string[i]);
break;
}
case -2: /* history_comment_char */
- if (i == 0 || member (string[i - 1], history_word_delimiters))
+ if ((dquote == 0 || history_quotes_inhibit_expansion == 0) &&
+ (i == 0 || member (string[i - 1], history_word_delimiters)))
{
temp = (char *)xmalloc (l - i + 1);
strcpy (temp, string + i);
@@ -1171,6 +1175,7 @@ history_expand (hstring, output)
characters in history_no_expand_chars, then it is not a
candidate for expansion of any kind. */
if (cc == 0 || member (cc, history_no_expand_chars) ||
+ (dquote && cc == '"') ||
(history_inhibit_expansion_function && (*history_inhibit_expansion_function) (string, i)))
{
ADD_CHAR (string[i]);
@@ -1196,8 +1201,8 @@ history_expand (hstring, output)
break;
}
#endif
-
- r = history_expand_internal (string, i, &eindex, &temp, result);
+ qc = squote ? '\'' : (dquote ? '"' : 0);
+ r = history_expand_internal (string, i, qc, &eindex, &temp, result);
if (r < 0)
{
*output = temp;
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