\input texinfo @c -*-texinfo-*- @c %**start of header @setfilename ../../info/reftex.info @settitle RefTeX User Manual @include docstyle.texi @synindex ky cp @syncodeindex vr cp @syncodeindex fn cp @ifnottex @macro RefTeX {} Ref@TeX{} @end macro @macro AUCTeX {} AUC@TeX{} @end macro @macro BibTeX {} Bib@TeX{} @end macro @macro ConTeXt {} Con@TeX{}t @end macro @end ifnottex @tex \gdef\RefTeX{Ref\TeX} \gdef\AUCTeX{AUC\TeX} \gdef\BibTeX{Bib\TeX} \gdef\ConTeXt{Con\TeX t} @end tex @include emacsver.texi @set VERSION @value{EMACSVER} @set AUCTEXSITE @uref{https://www.gnu.org/software/auctex/,@AUCTeX{} web site} @set MAINTAINERSITE @uref{https://www.gnu.org/software/auctex/reftex.html,@RefTeX{} web page} @set MAINTAINERCONTACT @uref{mailto:auctex-devel@@gnu.org,contact the maintainers} @set MAINTAINER the @AUCTeX{} project @set SUPPORTADDRESS @AUCTeX{} user mailing list (@email{auctex@@gnu.org}) @set DEVELADDRESS @AUCTeX{} developer mailing list (@email{auctex-devel@@gnu.org}) @set BUGADDRESS @AUCTeX{} bug mailing list (@email{bug-auctex@@gnu.org}) @set XEMACSFTP @uref{ftp://ftp.xemacs.org/pub/xemacs/packages/,XEmacs FTP site} @c %**end of header @copying This manual documents @RefTeX{} (version @value{VERSION}), a package to do labels, references, citations and indices for LaTeX documents with Emacs. Copyright @copyright{} 1997--2019 Free Software Foundation, Inc. @quotation 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, with the Front-Cover Texts being ``A GNU Manual'', and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled ``GNU Free Documentation License''. (a) The FSF's Back-Cover Text is: ``You have the freedom to copy and modify this GNU manual.'' @end quotation @end copying @dircategory Emacs misc features @direntry * RefTeX: (reftex). Emacs support for LaTeX cross-references and citations. @end direntry @finalout @c Macro definitions @c Subheadings inside a table. Need a difference between info and the rest. @macro tablesubheading{text} @ifinfo @subsubheading \text\ @end ifinfo @ifnotinfo @item @b{\text\} @end ifnotinfo @end macro @titlepage @title @RefTeX{} User Manual @subtitle Support for @LaTeX{} labels, references, citations and index entries with GNU Emacs @subtitle Version @value{VERSION} @author by Carsten Dominik @page @vskip 0pt plus 1filll @insertcopying @end titlepage @summarycontents @contents @ifnottex @node Top @top @RefTeX{} @insertcopying @RefTeX{} is a package for managing Labels, References, Citations and index entries with GNU Emacs. This manual documents @RefTeX{} version @value{VERSION}. Don't be discouraged by the size of this manual, which covers @RefTeX{} in great depth. All you need to know to use @RefTeX{} can be summarized on two pages (@pxref{RefTeX in a Nutshell}). You can go back later to other parts of this document when needed. @menu * Introduction:: Quick-Start information. * Table of Contents:: A Tool to move around quickly. * Labels and References:: Creating and referencing labels. * Citations:: Creating Citations. * Index Support:: Creating and Checking Index Entries. * Viewing Cross-References:: Who references or cites what? * RefTeXs Menu:: The Ref menu in the menubar. * Key Bindings:: The default key bindings. * Faces:: Fontification of RefTeX's buffers. * Multifile Documents:: Document spread over many files. * Language Support:: How to support other languages. * Finding Files:: Included @TeX{} files and @BibTeX{} .bib files. * Optimizations:: When RefTeX is too slow. * AUCTeX:: Cooperation with @AUCTeX{}. * Problems and Work-Arounds:: First Aid. * Imprint:: Author, Web-site, Thanks * Commands:: Which are the available commands. * Options:: How to extend and configure RefTeX. * Changes:: A List of recent changes to RefTeX. * GNU Free Documentation License:: The license for this documentation. The Index * Index:: The full index. @detailmenu --- The Detailed Node Listing --- Introduction * Installation:: How to install and activate RefTeX. * RefTeX in a Nutshell:: A brief summary and quick guide. Labels and References * Creating Labels:: * Referencing Labels:: * Builtin Label Environments:: The environments RefTeX knows about. * Defining Label Environments:: ... and environments it doesn't. * Reference Info:: View the label corresponding to a \ref. * Reference Styles:: Macros to be used instead of \ref. * LaTeX xr Package:: References to external documents. Defining Label Environments * Theorem and Axiom:: Defined with @code{\newenvironment}. * Quick Equation:: When a macro sets the label type. * Figure Wrapper:: When a macro argument is a label. * Adding Magic Words:: Other words for other languages. * Using \eqref:: How to switch to this AMS-LaTeX macro. * Non-Standard Environments:: Environments without \begin and \end * Putting it Together:: How to combine many entries. Citations * Creating Citations:: How to create them. * Citation Styles:: Natbib, Harvard, Chicago and Co. * Citation Info:: View the corresponding database entry. * Chapterbib and Bibunits:: Multiple bibliographies in a Document. * Citations Outside LaTeX:: How to make citations in Emails etc. * BibTeX Database Subsets:: Extract parts of a big database. Index Support * Creating Index Entries:: Macros and completion of entries. * The Index Phrases File:: A special file for global indexing. * Displaying and Editing the Index:: The index editor. * Builtin Index Macros:: The index macros RefTeX knows about. * Defining Index Macros:: ... and macros it doesn't. The Index Phrases File * Collecting Phrases:: Collecting from document or external. * Consistency Checks:: Check for duplicates etc. * Global Indexing:: The interactive indexing process. AUCTeX * AUCTeX-RefTeX Interface:: How both packages work together * Style Files:: @AUCTeX{}'s style files can support RefTeX * Bib-Cite:: Hypertext reading of a document Options, Keymaps, Hooks * Options - Table of Contents:: * Options - Defining Label Environments:: * Options - Creating Labels:: * Options - Referencing Labels:: * Options - Creating Citations:: * Options - Index Support:: * Options - Viewing Cross-References:: * Options - Finding Files:: * Options - Optimizations:: * Options - Fontification:: * Options - Misc:: @end detailmenu @end menu @end ifnottex @node Introduction @chapter Introduction @cindex Introduction @RefTeX{} is a specialized package for support of labels, references, citations, and the index in @LaTeX{}. @RefTeX{} wraps itself round four @LaTeX{} macros: @code{\label}, @code{\ref}, @code{\cite}, and @code{\index}. Using these macros usually requires looking up different parts of the document and searching through @BibTeX{} database files. @RefTeX{} automates these time-consuming tasks almost entirely. It also provides functions to display the structure of a document and to move around in this structure quickly. @iftex Don't be discouraged by the size of this manual, which covers @RefTeX{} in great depth. All you need to know to use @RefTeX{} can be summarized on two pages (@pxref{RefTeX in a Nutshell}). You can go back later to other parts of this document when needed. @end iftex @xref{Imprint}, for information about who to contact for help, bug reports or suggestions. @menu * Installation:: How to install and activate RefTeX. * RefTeX in a Nutshell:: A brief summary and quick guide. @end menu @node Installation @section Installation @cindex Installation @RefTeX{} has been bundled and pre-installed with Emacs since version 20.2. It has also been bundled and pre-installed with XEmacs 19.16--20.x. XEmacs 21.x users want to install the corresponding plug-in package which is available from the @value{XEMACSFTP}. See the XEmacs 21.x documentation on package installation for details. Users of earlier Emacs distributions (including Emacs 19) or people craving for new features and bugs can get a copy of the @RefTeX{} distribution from the maintainer's web page. @xref{Imprint}, for more information. The following instructions will guide you through the process of installing such a distribution. @subsection Building and Installing Note: Currently installation is supported for Emacs only. XEmacs users might want to refer to the @RefTeX{} package available through the package system of XEmacs. @subsubheading Installation with make In order to install RefTeX, unpack the distribution and edit the header of the Makefile. Basically, you need to change the path specifications for Emacs Lisp files and info files. Also, enter the name of your Emacs executable (usually either @samp{emacs} or @samp{xemacs}). Then, type @example make make install @end example to compile and install the code and documentation. Per default @RefTeX{} is installed in its own subdirectory which might not be on your load path. In this case, add it to load path with a command like the following, replacing the sample directory with the one where @RefTeX{} is installed in your case. @example (add-to-list 'load-path "/path/to/reftex") @end example Put this command into your init file before other @RefTeX{}-related settings. @subsubheading Installation by Hand If you want to get your hands dirty, there is also the possibility to install by manually copying files. @enumerate a @item Copy the reftex*.el lisp files to a directory on your load path. Make sure that no old copy of @RefTeX{} shadows these files. @item Byte compile the files. The sequence of compiling should be: reftex-var.el, reftex.el, and then all the others. @item Copy the info file reftex.info to the info directory. @end enumerate @subsection Loading @RefTeX{} In order to make the most important functions for entering @RefTeX{} mode available add the following line to your init file. @example (require 'reftex) @end example @subsection Entering @RefTeX{} Mode @findex turn-on-reftex @findex reftex-mode @vindex LaTeX-mode-hook @vindex latex-mode-hook To turn @RefTeX{} Mode on and off in a particular buffer, use @kbd{M-x reftex-mode @key{RET}}. To turn on @RefTeX{} Mode for all LaTeX files, add the following lines to your @file{.emacs} file: @example (add-hook 'LaTeX-mode-hook 'turn-on-reftex) ; with AUCTeX LaTeX mode (add-hook 'latex-mode-hook 'turn-on-reftex) ; with Emacs latex mode @end example That's all! To get started, read the documentation, in particular the summary. (@pxref{RefTeX in a Nutshell}) In order to produce a printed version of the documentation, use @code{make pdf} to produce a reftex.pdf file. Analogously you can use the @code{dvi}, @code{ps}, or @code{html} targets to create DVI, PostScript or HTML files. @subsection Environment @cindex Finding files @cindex BibTeX database files, not found @cindex TeX files, not found @cindex @code{TEXINPUTS}, environment variable @cindex @code{BIBINPUTS}, environment variable @RefTeX{} needs to access all files which are part of a multifile document, and the BibTeX database files requested by the @code{\bibliography} command. To find these files, @RefTeX{} will require a search path, i.e., a list of directories to check. Normally this list is stored in the environment variables @code{TEXINPUTS} and @code{BIBINPUTS} which are also used by @RefTeX{}. However, on some systems these variables do not contain the full search path. If @RefTeX{} does not work for you because it cannot find some files, @xref{Finding Files}. @page @node RefTeX in a Nutshell @section @RefTeX{} in a Nutshell @cindex Quick-Start @cindex Getting Started @cindex RefTeX in a Nutshell @cindex Nutshell, RefTeX in a @enumerate @item @b{Table of Contents}@* Typing @kbd{C-c =} (@code{reftex-toc}) will show a table of contents of the document. This buffer can display sections, labels and index entries defined in the document. From the buffer, you can jump quickly to every part of your document. Press @kbd{?} to get help. @item @b{Labels and References}@* @RefTeX{} helps to create unique labels and to find the correct key for references quickly. It distinguishes labels for different environments, knows about all standard environments (and many others), and can be configured to recognize any additional labeled environments you have defined yourself (variable @code{reftex-label-alist}). @itemize @bullet @item @b{Creating Labels}@* Type @kbd{C-c (} (@code{reftex-label}) to insert a label at point. @RefTeX{} will either @itemize @minus @item derive a label from context (default for section labels) @item prompt for a label string (default for figures and tables) or @item insert a simple label made of a prefix and a number (all other environments) @end itemize @noindent Which labels are created how is configurable with the variable @code{reftex-insert-label-flags}. @item @b{Referencing Labels}@* To make a reference, type @kbd{C-c )} (@code{reftex-reference}). This shows an outline of the document with all labels of a certain type (figure, equation,...) and some label context. Selecting a label inserts a @code{\ref@{@var{label}@}} macro into the original buffer. @end itemize @item @b{Citations}@* Typing @kbd{C-c [} (@code{reftex-citation}) will let you specify a regular expression to search in current @BibTeX{} database files (as specified in the @code{\bibliography} command) and pull out a list of matches for you to choose from. The list is @emph{formatted} and sorted. The selected article is referenced as @samp{\cite@{@var{key}@}} (see the variable @code{reftex-cite-format} if you want to insert different macros). @item @b{Index Support}@* @RefTeX{} helps to enter index entries. It also compiles all entries into an alphabetically sorted @file{*Index*} buffer which you can use to check and edit the entries. @RefTeX{} knows about the standard index macros and can be configured to recognize any additional macros you have defined (@code{reftex-index-macros}). Multiple indices are supported. @itemize @bullet @item @b{Creating Index Entries}@* To index the current selection or the word at point, type @kbd{C-c /} (@code{reftex-index-selection-or-word}). The default macro @code{reftex-index-default-macro} will be used. For a more complex entry type @kbd{C-c <} (@code{reftex-index}), select any of the index macros and enter the arguments with completion. @item @b{The Index Phrases File (Delayed Indexing)}@* Type @kbd{C-c \} (@code{reftex-index-phrase-selection-or-word}) to add the current word or selection to a special @emph{index phrase file}. @RefTeX{} can later search the document for occurrences of these phrases and let you interactively index the matches. @item @b{Displaying and Editing the Index}@* To display the compiled index in a special buffer, type @kbd{C-c >} (@code{reftex-display-index}). From that buffer you can check and edit all entries. @end itemize @page @item @b{Viewing Cross-References}@* When point is on the @var{key} argument of a cross-referencing macro (@code{\label}, @code{\ref}, @code{\cite}, @code{\bibitem}, @code{\index}, and variations) or inside a @BibTeX{} database entry, you can press @kbd{C-c &} (@code{reftex-view-crossref}) to display corresponding locations in the document and associated @BibTeX{} database files. @* When the enclosing macro is @code{\cite} or @code{\ref} and no other message occupies the echo area, information about the citation or label will automatically be displayed in the echo area. @item @b{Multifile Documents}@* Multifile Documents are fully supported. The included files must have a file variable @code{TeX-master} or @code{tex-main-file} pointing to the master file. @RefTeX{} provides cross-referencing information from all parts of the document, and across document borders (@file{xr.sty}). @item @b{Document Parsing}@* @RefTeX{} needs to parse the document in order to find labels and other information. It does it automatically once and updates its list internally when @code{reftex-label} and @code{reftex-index} are used. To enforce reparsing, call any of the commands described above with a raw @kbd{C-u} prefix, or press the @kbd{r} key in the label selection buffer, the table of contents buffer, or the index buffer. @item @b{@AUCTeX{}} @* If your major @LaTeX{} mode is @AUCTeX{}, @RefTeX{} can cooperate with it (see variable @code{reftex-plug-into-AUCTeX}). @AUCTeX{} contains style files which trigger appropriate settings in @RefTeX{}, so that for many of the popular @LaTeX{} packages no additional customizations will be necessary. @item @b{Useful Settings}@* To integrate RefTeX with @AUCTeX{}, use @lisp (setq reftex-plug-into-AUCTeX t) @end lisp To make your own @LaTeX{} macro definitions known to @RefTeX{}, customize the variables @example @code{reftex-label-alist} @r{(for label macros/environments)} @code{reftex-section-levels} @r{(for sectioning commands)} @code{reftex-cite-format} @r{(for @code{\cite}-like macros)} @code{reftex-index-macros} @r{(for @code{\index}-like macros)} @code{reftex-index-default-macro} @r{(to set the default macro)} @end example If you have a large number of macros defined, you may want to write an @AUCTeX{} style file to support them with both @AUCTeX{} and @RefTeX{}. @item @b{Where Next?}@* Go ahead and use @RefTeX{}. Use its menus until you have picked up the key bindings. For an overview of what you can do in each of the different special buffers, press @kbd{?}. Read the manual if you get stuck, or if you are curious what else might be available. The first part of the manual explains in a tutorial way how to use and customize @RefTeX{}. The second part is a command and variable reference. @end enumerate @node Table of Contents @chapter Table of Contents @cindex @file{*toc*} buffer @cindex Structure editing @cindex Table of contents buffer @findex reftex-toc @kindex C-c = Pressing the keys @kbd{C-c =} pops up a buffer showing the table of contents of the document. By default, this @file{*toc*} buffer shows only the sections of a document. Using the @kbd{l} and @kbd{i} keys you can display all labels and index entries defined in the document as well. With the cursor in any of the lines denoting a location in the document, simple key strokes will display the corresponding part in another window, jump to that location, or perform other actions. @kindex ? Here is a list of special commands in the @file{*toc*} buffer. A summary of this information is always available by pressing @kbd{?}. @table @kbd @tablesubheading{General} @item ? Display a summary of commands. @item 0-9, - Prefix argument. @tablesubheading{Moving around} @item n Goto next entry in the table of contents. @item p Goto previous entry in the table of contents. @item C-c C-n Goto next section heading. Useful when many labels and index entries separate section headings. @item C-c C-p Goto previous section heading. @item N z Jump to section N, using the prefix arg. For example, @kbd{3 z} jumps to section 3. @tablesubheading{Access to document locations} @item @key{SPC} Show the corresponding location in another window. This command does @emph{not} select that other window. @item @key{TAB} Goto the location in another window. @item @key{RET} Go to the location and hide the @file{*toc*} buffer. This will restore the window configuration before @code{reftex-toc} (@kbd{C-c =}) was called. @item mouse-2 @vindex reftex-highlight-selection Clicking with mouse button 2 on a line has the same effect as @key{RET}. See also variable @code{reftex-highlight-selection}, @ref{Options - Fontification}. @item f @vindex reftex-toc-follow-mode @vindex reftex-revisit-to-follow Toggle follow mode. When follow mode is active, the other window will always show the location corresponding to the line at point in the @file{*toc*} buffer. This is similar to pressing @key{SPC} after each cursor motion. The default for this flag can be set with the variable @code{reftex-toc-follow-mode}. Note that only context in files already visited is shown. @RefTeX{} will not visit a file just for follow mode. See, however, the variable @code{reftex-revisit-to-follow}. @item . Show calling point in another window. This is the point from where @code{reftex-toc} was last called. @page @tablesubheading{Promotion and Demotion} @item < Promote the current section. This will convert @code{\section} to @code{\chapter}, @code{\subsection} to @code{\section} etc. If there is an active region, all sections in the region will be promoted, including the one at point. To avoid mistakes, @RefTeX{} requires a fresh document scan before executing this command; if necessary, it will automatically do this scan and ask the user to repeat the promotion command. @item > Demote the current section. This is the opposite of promotion. It will convert @code{\chapter} to @code{\section} etc. If there is an active region, all sections in the region will be demoted, including the one at point. @item M-% Rename the label at point. While generally not recommended, this can be useful when a package like @file{fancyref} is used where the label prefix determines the wording of a reference. After a promotion/demotion it may be necessary to change a few labels from @samp{sec:xyz} to @samp{cha:xyz} or vice versa. This command can be used to do this; it launches a query replace to rename the definition and all references of a label. @tablesubheading{Exiting} @item q Hide the @file{*toc*} buffer, return to the position where @code{reftex-toc} was last called. @item k Kill the @file{*toc*} buffer, return to the position where @code{reftex-toc} was last called. @item C-c > Switch to the @file{*Index*} buffer of this document. With prefix @samp{2}, restrict the index to the section at point in the @file{*toc*} buffer. @tablesubheading{Controlling what gets displayed} @item t @vindex reftex-toc-max-level Change the maximum level of toc entries displayed in the @file{*toc*} buffer. Without prefix arg, all levels will be included. With prefix arg (e.g., @kbd{3 t}), ignore all toc entries with level greater than @var{arg} (3 in this case). Chapters are level 1, sections are level 2. The mode line @samp{T<>} indicator shows the current value. The default depth can be configured with the variable @code{reftex-toc-max-level}. @item F @vindex reftex-toc-include-file-boundaries Toggle the display of the file borders of a multifile document in the @file{*toc*} buffer. The default for this flag can be set with the variable @code{reftex-toc-include-file-boundaries}. @item l @vindex reftex-toc-include-labels Toggle the display of labels in the @file{*toc*} buffer. The default for this flag can be set with the variable @code{reftex-toc-include-labels}. When called with a prefix argument, @RefTeX{} will prompt for a label type and include only labels of the selected type in the @file{*toc*} buffer. The mode line @samp{L<>} indicator shows which labels are included. @item i @vindex reftex-toc-include-index-entries Toggle the display of index entries in the @file{*toc*} buffer. The default for this flag can be set with the variable @code{reftex-toc-include-index-entries}. When called with a prefix argument, @RefTeX{} will prompt for a specific index and include only entries in the selected index in the @file{*toc*} buffer. The mode line @samp{I<>} indicator shows which index is used. @item c @vindex reftex-toc-include-context Toggle the display of label and index context in the @file{*toc*} buffer. The default for this flag can be set with the variable @code{reftex-toc-include-context}. @tablesubheading{Updating the buffer} @item g Rebuild the @file{*toc*} buffer. This does @emph{not} rescan the document. @item r @vindex reftex-enable-partial-scans Reparse the @LaTeX{} document and rebuild the @file{*toc*} buffer. When @code{reftex-enable-partial-scans} is non-@code{nil}, rescan only the file this location is defined in, not the entire document. @item C-u r Reparse the @emph{entire} @LaTeX{} document and rebuild the @file{*toc*} buffer. @item x Switch to the @file{*toc*} buffer of an external document. When the current document is using the @code{xr} package (@pxref{LaTeX xr Package}), @RefTeX{} will switch to one of the external documents. @tablesubheading{Automatic recentering} @item d Toggle the display of a dedicated frame displaying just the @file{*toc*} buffer. Follow mode and visiting locations will not work that frame, but automatic recentering will make this frame always show your current editing location in the document (see below). @item a Toggle the automatic recentering of the @file{*toc*} buffer. When this option is on, moving around in the document will cause the @file{*toc*} to always highlight the current section. By default, this option is active while the dedicated @file{*TOC*} frame exists. See also the variable @code{reftex-auto-recenter-toc}. @end table @vindex reftex-toc-map In order to define additional commands for the @file{*toc*} buffer, the keymap @code{reftex-toc-map} may be used. @findex reftex-toc-recenter @vindex reftex-auto-recenter-toc @vindex reftex-idle-time @cindex @file{*toc*} buffer, recentering @cindex Table of contents buffer, recentering @kindex C-c - If you call @code{reftex-toc} while the @file{*toc*} buffer already exists, the cursor will immediately jump to the right place, i.e., the section from which @code{reftex-toc} was called will be highlighted. The command @kbd{C-c -} (@code{reftex-toc-recenter}) will only redisplay the @file{*toc*} buffer and highlight the correct line without actually selecting the @file{*toc*} window. This can be useful to quickly find out where in the document you currently are. You can also automate this by asking RefTeX to keep track of your current editing position in the TOC@. The TOC window will then be updated whenever you stop typing for more than @code{reftex-idle-time} seconds. By default this works only with the dedicated @file{*TOC*} frame. But you can also force automatic recentering of the TOC window on the current frame with @lisp (setq reftex-auto-recenter-toc t) @end lisp @cindex Sectioning commands @cindex KOMA-Script, LaTeX classes @cindex LaTeX classes, KOMA-Script @cindex TOC entries for environments @vindex reftex-section-levels The section macros recognized by @RefTeX{} are all @LaTeX{} section macros (from @code{\part} to @code{\subsubparagraph}) and the commands @code{\addchap} and @code{\addsec} from the KOMA-Script classes. Additional macros can be configured with the variable @code{reftex-section-levels}. It is also possible to add certain @LaTeX{} environments to the table of contents. This is probably only useful for theorem-like environments. @xref{Defining Label Environments}, for an example. @node Labels and References @chapter Labels and References @cindex Labels in LaTeX @cindex References in LaTeX @cindex Label category @cindex Label environment @cindex @code{\label} @LaTeX{} provides a powerful mechanism to deal with cross-references in a document. When writing a document, any part of it can be marked with a label, like @samp{\label@{mark@}}. @LaTeX{} records the current value of a certain counter when a label is defined. Later references to this label (like @samp{\ref@{mark@}}) will produce the recorded value of the counter. Labels can be used to mark sections, figures, tables, equations, footnotes, items in enumerate lists etc. @LaTeX{} is context sensitive in doing this: A label defined in a figure environment automatically records the figure counter, not the section counter. Several different environments can share a common counter and therefore a common label category. For example labels in both @code{equation} and @code{eqnarray} environments record the value of the same counter: the equation counter. @menu * Creating Labels:: * Referencing Labels:: * Builtin Label Environments:: The environments RefTeX knows about. * Defining Label Environments:: ... and environments it doesn't. * Reference Info:: View the label corresponding to a \ref. * Reference Styles:: Macros to be used instead of \ref. * LaTeX xr Package:: References to external documents. @end menu @node Creating Labels @section Creating Labels @cindex Creating labels @cindex Labels, creating @cindex Labels, deriving from context @kindex C-c ( @findex reftex-label In order to create a label in a @LaTeX{} document, press @kbd{C-c (} (@code{reftex-label}). Just like @LaTeX{}, @RefTeX{} is context sensitive and will figure out the environment it currently is in and adapt the label to that environment. A label usually consists of a short prefix indicating the type of the label and a unique mark. @RefTeX{} has three different modes to create this mark. @enumerate @item @vindex reftex-translate-to-ascii-function @vindex reftex-derive-label-parameters @vindex reftex-label-illegal-re @vindex reftex-abbrev-parameters A label can be derived from context. This means, @RefTeX{} takes the context of the label definition and constructs a label from that@footnote{Note that the context may contain constructs which are invalid in labels. @RefTeX{} will therefore strip the accent from accented Latin-1 characters and remove everything else which is not valid in labels. This mechanism is safe, but may not be satisfactory for non-western languages. Check the following variables if you need to change things: @code{reftex-translate-to-ascii-function}, @code{reftex-derive-label-parameters}, @code{reftex-label-illegal-re}, @code{reftex-abbrev-parameters}.}. This works best for section labels, where the section heading is used to construct a label. In fact, @RefTeX{}'s default settings use this method only for section labels. You will be asked to confirm the derived label, or edit it. @item We may also use a simple unique number to identify a label. This is mostly useful for labels where it is difficult to come up with a very good descriptive name. @RefTeX{}'s default settings use this method for equations, enumerate items and footnotes. The author of @RefTeX{} tends to write documents with many equations and finds it impossible to come up with good names for each of them. These simple labels are inserted without query, and are therefore very fast. Good descriptive names are not really necessary as @RefTeX{} will provide context to reference a label (@pxref{Referencing Labels}). @item The third method is to ask the user for a label. This is most useful for things which are easy to describe briefly and do not turn up too frequently in a document. @RefTeX{} uses this for figures and tables. Of course, one can enter the label directly by typing the full @samp{\label@{mark@}}. The advantage of using @code{reftex-label} anyway is that @RefTeX{} will know that a new label has been defined. It will then not be necessary to rescan the document in order to access this label later. @end enumerate @vindex reftex-insert-label-flags If you want to change the way certain labels are created, check out the variable @code{reftex-insert-label-flags} (@pxref{Options - Creating Labels}). If you are using @AUCTeX{} to write your @LaTeX{} documents, you can set it up to delegate the creation of labels to @RefTeX{}. @xref{AUCTeX}, for more information. @node Referencing Labels @section Referencing Labels @cindex Referencing labels @cindex Labels, referencing @cindex Selection buffer, labels @cindex Selection process @cindex @code{\ref} @kindex C-c ) @findex reftex-reference @vindex reftex-trust-label-prefix @RefTeX{} scans the document in order to find all labels. To make referencing labels easier, it assigns to each label a category, the @emph{label type} (for example section, table, figure, equation, etc.). In order to determine the label type, @RefTeX{} parses around each label to see in what kind of environments it is located. You can speed up the parsing by using type-specific prefixes for labels and configuring the variable @code{reftex-trust-label-prefix}. Referencing Labels is really at the heart of @RefTeX{}. Press @kbd{C-c )} in order to reference a label (@code{reftex-reference}). This will start a selection process and finally insert the complete @samp{\ref@{label@}} into the buffer. @vindex reftex-ref-macro-prompt First, you can select which reference macro you want to use, e.g., @samp{\ref} or @samp{\pageref}. Later in the process you have another chance to make this selection and you can therefore disable this step by customizing @code{reftex-ref-macro-prompt} if you find it too intrusive. @xref{Reference Styles}. Then, @RefTeX{} will determine the label category which is required. Often that can be figured out from context. For example, if you write @samp{As shown in eq.} and then press @kbd{C-c )}, @RefTeX{} knows that an equation label is going to be referenced. If it cannot figure out what label category is needed, it will query for one. You will then be presented with a label selection menu. This is a special buffer which contains an outline of the document along with all labels of the given label category. In addition, next to the label there will be one line of context of the label definition, which is some text in the buffer near the label definition. Usually this is sufficient to identify the label. If you are unsure about a certain label, pressing @key{SPC} will show the label definition point in another window. In order to reference a label, move the cursor to the correct label and press @key{RET}. You can also reference several labels with a single call to @code{reftex-reference} by marking entries with the @kbd{m} key (see below). @kindex ? Here is a list of special commands in the selection buffer. A summary of this information is always available from the selection process by pressing @kbd{?}. @table @kbd @tablesubheading{General} @item ? Show a summary of available commands. @item 0-9,- Prefix argument. @tablesubheading{Moving around} @item n Go to next label. @item p Go to previous label. @item b Jump back to the position where you last left the selection buffer. Normally this should get you back to the last referenced label. @item C-c C-n Goto next section heading. @item C-c C-p Goto previous section heading. @item N z Jump to section N, using the prefix arg. For example @kbd{3 z} jumps to section 3. @tablesubheading{Displaying Context} @item @key{SPC} Show the surroundings of the definition of the current label in another window. See also the @kbd{f} key. @item f @vindex reftex-revisit-to-follow Toggle follow mode. When follow mode is active, the other window will always display the full context of the current label. This is similar to pressing @key{SPC} after each cursor motion. Note that only context in files already visited is shown. @RefTeX{} will not visit a file just for follow mode. See, however, the variable @code{reftex-revisit-to-follow}. @item . Show insertion point in another window. This is the point from where you called @code{reftex-reference}. @tablesubheading{Selecting a label and creating the reference} @item @key{RET} Insert a reference to the label at point into the buffer from which the selection process was started. When entries have been marked, @key{RET} references all marked labels. @item mouse-2 @vindex reftex-highlight-selection Clicking with mouse button 2 on a label will accept it like @key{RET} would. See also variable @code{reftex-highlight-selection}, @ref{Options - Misc}. @vindex reftex-multiref-punctuation @item m - + , Mark the current entry. When several entries have been marked, pressing @kbd{RET} will accept all of them and place them into several @code{\ref} macros. The special markers @samp{,-+} also store a separator to be inserted before the corresponding reference. So marking six entries with the keys @samp{m , , - , +} will give a reference list like this (see the variable @code{reftex-multiref-punctuation}) @example In eqs. (1), (2), (3)--(4), (5) and (6) @end example @item u Unmark a marked entry. @c FIXME: Do we need 'A' as well for consistency? @cindex LaTeX packages, @code{saferef} @cindex @code{saferef}, LaTeX package @item a Accept the marked entries and put all labels as a comma-separated list into one @emph{single} @code{\ref} macro. Some packages like @file{saferef.sty} support multiple references in this way. @item l Use the last referenced label(s) again. This is equivalent to moving to that label and pressing @key{RET}. @item @key{TAB} Enter a label with completion. This may also be a label which does not yet exist in the document. @item v Cycle forward through active reference macros. The selected macro is displayed by the @samp{S<...>} indicator in the mode line of the selection buffer. This mechanism comes in handy if you are using @LaTeX{} packages like @code{varioref} or @code{fancyref} and want to use the special referencing macros they provide (e.g., @code{\vref} or @code{\fref}) instead of @code{\ref}. @item V Cycle backward through active reference macros. @tablesubheading{Exiting} @item q Exit the selection process without inserting any reference into the buffer. @tablesubheading{Controlling what gets displayed} @vindex reftex-label-menu-flags The defaults for the following flags can be configured with the variable @code{reftex-label-menu-flags} (@pxref{Options - Referencing Labels}). @item c Toggle the display of the one-line label definition context in the selection buffer. @item F Toggle the display of the file borders of a multifile document in the selection buffer. @item t Toggle the display of the table of contents in the selection buffer. With prefix @var{arg}, change the maximum level of toc entries displayed to @var{arg}. Chapters are level 1, sections are level 2. @item # Toggle the display of a label counter in the selection buffer. @item % Toggle the display of labels hidden in comments in the selection buffers. Sometimes, you may have commented out parts of your document. If these parts contain label definitions, @RefTeX{} can still display and reference these labels. @tablesubheading{Updating the buffer} @item g Update the menu. This will rebuilt the menu from the internal label list, but not reparse the document (see @kbd{r}). @item r @vindex reftex-enable-partial-scans Reparse the document to update the information on all labels and rebuild the menu. If the variable @code{reftex-enable-partial-scans} is non-@code{nil} and your document is a multifile document, this will reparse only a part of the document (the file in which the label at point was defined). @item C-u r Reparse the @emph{entire} document. @item s Switch the label category. After prompting for another label category, a menu for that category will be shown. @item x Reference a label from an external document. With the @LaTeX{} package @code{xr} it is possible to reference labels defined in another document. This key will switch to the label menu of an external document and let you select a label from there (@pxref{LaTeX xr Package,,xr}). @end table @vindex reftex-select-label-map In order to define additional commands for the selection process, the keymap @code{reftex-select-label-map} may be used. @node Builtin Label Environments @section Builtin Label Environments @cindex Builtin label environments @cindex Label environments, builtin @cindex Environments, builtin @vindex reftex-label-alist @vindex reftex-label-alist-builtin @RefTeX{} needs to be aware of the environments which can be referenced with a label (i.e., which carry their own counters). By default, @RefTeX{} recognizes all labeled environments and macros discussed in @cite{The @LaTeX{} Companion by Goossens, Mittelbach & Samarin, Addison-Wesley 1994.}. These are: @itemize @minus @item @cindex @code{figure}, LaTeX environment @cindex @code{figure*}, LaTeX environment @cindex @code{table}, LaTeX environment @cindex @code{table*}, LaTeX environment @cindex @code{equation}, LaTeX environment @cindex @code{eqnarray}, LaTeX environment @cindex @code{enumerate}, LaTeX environment @cindex @code{\footnote}, LaTeX macro @cindex LaTeX macro @code{footnote} @cindex LaTeX core @code{figure}, @code{figure*}, @code{table}, @code{table*}, @code{equation}, @code{eqnarray}, @code{enumerate}, the @code{\footnote} macro (this is the @LaTeX{} core stuff) @item @cindex AMS-LaTeX @cindex @code{amsmath}, LaTeX package @cindex LaTeX packages, @code{amsmath} @cindex @code{align}, AMS-LaTeX environment @cindex @code{gather}, AMS-LaTeX environment @cindex @code{multline}, AMS-LaTeX environment @cindex @code{flalign}, AMS-LaTeX environment @cindex @code{alignat}, AMS-LaTeX environment @cindex @code{xalignat}, AMS-LaTeX environment @cindex @code{xxalignat}, AMS-LaTeX environment @cindex @code{subequations}, AMS-LaTeX environment @code{align}, @code{gather}, @code{multline}, @code{flalign}, @code{alignat}, @code{xalignat}, @code{xxalignat}, @code{subequations} (from AMS-@LaTeX{}'s @file{amsmath.sty} package) @item @cindex @code{endnote}, LaTeX package @cindex LaTeX packages, @code{endnote} @cindex @code{\endnote}, LaTeX macro the @code{\endnote} macro (from @file{endnotes.sty}) @item @cindex @code{fancybox}, LaTeX package @cindex LaTeX packages, @code{fancybox} @cindex @code{Beqnarray}, LaTeX environment @code{Beqnarray} (@file{fancybox.sty}) @item @cindex @code{floatfig}, LaTeX package @cindex LaTeX packages, @code{floatfig} @cindex @code{floatingfig}, LaTeX environment @code{floatingfig} (@file{floatfig.sty}) @item @cindex @code{longtable}, LaTeX package @cindex LaTeX packages, @code{longtable} @cindex @code{longtable}, LaTeX environment @code{longtable} (@file{longtable.sty}) @item @cindex @code{picinpar}, LaTeX package @cindex LaTeX packages, @code{picinpar} @cindex @code{figwindow}, LaTeX environment @cindex @code{tabwindow}, LaTeX environment @code{figwindow}, @code{tabwindow} (@file{picinpar.sty}) @item @cindex @code{sidecap}, LaTeX package @cindex LaTeX packages, @code{sidecap} @cindex @code{SCfigure}, LaTeX environment @cindex @code{SCtable}, LaTeX environment @code{SCfigure}, @code{SCtable} (@file{sidecap.sty}) @item @cindex @code{rotating}, LaTeX package @cindex LaTeX packages, @code{rotating} @cindex @code{sidewaysfigure}, LaTeX environment @cindex @code{sidewaystable}, LaTeX environment @code{sidewaysfigure}, @code{sidewaystable} (@file{rotating.sty}) @item @cindex @code{subfig}, LaTeX package @cindex LaTeX packages, @code{subfigure} @cindex @code{subfigure}, LaTeX environment @cindex @code{subfigure*}, LaTeX environment @code{subfigure}, @code{subfigure*}, the @code{\subfigure} macro (@file{subfigure.sty}) @item @cindex @code{supertab}, LaTeX package @cindex LaTeX packages, @code{supertab} @cindex @code{supertabular}, LaTeX environment @code{supertabular} (@file{supertab.sty}) @item @cindex @code{wrapfig}, LaTeX package @cindex LaTeX packages, @code{wrapfig} @cindex @code{wrapfigure}, LaTeX environment @code{wrapfigure} (@file{wrapfig.sty}) @end itemize If you want to use other labeled environments, defined with @code{\newtheorem}, @RefTeX{} needs to be configured to recognize them (@pxref{Defining Label Environments}). @node Defining Label Environments @section Defining Label Environments @cindex Label environments, defining @vindex reftex-label-alist @RefTeX{} can be configured to recognize additional labeled environments and macros. This is done with the variable @code{reftex-label-alist} (@pxref{Options - Defining Label Environments}). If you are not familiar with Lisp, you can use the @code{custom} library to configure this rather complex variable. To do this, use @example @kbd{M-x customize-variable @key{RET} reftex-label-alist @key{RET}} @end example @vindex reftex-label-alist-builtin Here we will discuss a few examples, in order to make things clearer. It can also be instructive to look at the constant @code{reftex-label-alist-builtin} which contains the entries for all the builtin environments and macros (@pxref{Builtin Label Environments}). @menu * Theorem and Axiom:: Defined with @code{\newenvironment}. * Quick Equation:: When a macro sets the label type. * Figure Wrapper:: When a macro argument is a label. * Adding Magic Words:: Other words for other languages. * Using \eqref:: How to switch to this AMS-@LaTeX{} macro. * Non-Standard Environments:: Environments without \begin and \end * Putting it Together:: How to combine many entries. @end menu @node Theorem and Axiom @subsection Theorem and Axiom Environments @cindex @code{theorem}, newtheorem @cindex @code{axiom}, newtheorem @cindex @code{\newtheorem} Suppose you are using @code{\newtheorem} in @LaTeX{} in order to define two new environments, @code{theorem} and @code{axiom} @example \newtheorem@{axiom@}@{Axiom@} \newtheorem@{theorem@}@{Theorem@} @end example @noindent to be used like this: @example \begin@{axiom@} \label@{ax:first@} .... \end@{axiom@} @end example So we need to tell @RefTeX{} that @code{theorem} and @code{axiom} are new labeled environments which define their own label categories. We can either use Lisp to do this (e.g., in @file{.emacs}) or use the custom library. With Lisp it would look like this @lisp (setq reftex-label-alist '(("axiom" ?a "ax:" "~\\ref@{%s@}" nil ("axiom" "ax.") -2) ("theorem" ?h "thr:" "~\\ref@{%s@}" t ("theorem" "th.") -3))) @end lisp The type indicator characters @code{?a} and @code{?h} are used for prompts when @RefTeX{} queries for a label type. @code{?h} was chosen for @code{theorem} since @code{?t} is already taken by @code{table}. Note that also @code{?s}, @code{?f}, @code{?e}, @code{?i}, @code{?n} are already used for standard environments. @noindent The labels for Axioms and Theorems will have the prefixes @samp{ax:} and @samp{thr:}, respectively. @xref{AUCTeX}, for information on how @AUCTeX{} can use @RefTeX{} to automatically create labels when a new environment is inserted into a buffer. Additionally, the following needs to be added to one's .emacs file before @AUCTeX{} will automatically create labels for the new environments. @lisp (add-hook 'LaTeX-mode-hook (lambda () (LaTeX-add-environments '("axiom" LaTeX-env-label) '("theorem" LaTeX-env-label)))) @end lisp @noindent The @samp{~\ref@{%s@}} is a format string indicating how to insert references to these labels. @noindent The next item indicates how to grab context of the label definition. @itemize @minus @item @code{t} means to get it from a default location (from the beginning of a @code{\macro} or after the @code{\begin} statement). @code{t} is @emph{not} a good choice for eqnarray and similar environments. @item @code{nil} means to use the text right after the label definition. @item For more complex ways of getting context, see the variable @code{reftex-label-alist} (@ref{Options - Defining Label Environments}). @end itemize The following list of strings is used to guess the correct label type from the word before point when creating a reference. For example if you write: @samp{As we have shown in Theorem} and then press @kbd{C-c )}, @RefTeX{} will know that you are looking for a theorem label and restrict the menu to only these labels without even asking. The final item in each entry is the level at which the environment should produce entries in the table of context buffer. If the number is positive, the environment will produce numbered entries (like @code{\section}), if it is negative the entries will be unnumbered (like @code{\section*}). Use this only for environments which structure the document similar to sectioning commands. For everything else, omit the item. To do the same configuration with @code{customize}, you need to click on the @code{[INS]} button twice to create two templates and fill them in like this: @example Reftex Label Alist: [Hide] [INS] [DEL] Package or Detailed : [Value Menu] Detailed: Environment or \macro : [Value Menu] String: axiom Type specification : [Value Menu] Char : a Label prefix string : [Value Menu] String: ax: Label reference format: [Value Menu] String: ~\ref@{%s@} Context method : [Value Menu] After label Magic words: [INS] [DEL] String: axiom [INS] [DEL] String: ax. [INS] [X] Make TOC entry : [Value Menu] Level: -2 [INS] [DEL] Package or Detailed : [Value Menu] Detailed: Environment or \macro : [Value Menu] String: theorem Type specification : [Value Menu] Char : h Label prefix string : [Value Menu] String: thr: Label reference format: [Value Menu] String: ~\ref@{%s@} Context method : [Value Menu] Default position Magic words: [INS] [DEL] String: theorem [INS] [DEL] String: theor. [INS] [DEL] String: th. [INS] [X] Make TOC entry : [Value Menu] Level: -3 @end example @vindex reftex-insert-label-flags @vindex reftex-label-menu-flags Depending on how you would like the label insertion and selection for the new environments to work, you might want to add the letters @samp{a} and @samp{h} to some of the flags in the variables @code{reftex-insert-label-flags} (@pxref{Options - Creating Labels}) and @code{reftex-label-menu-flags} (@pxref{Options - Referencing Labels}). @node Quick Equation @subsection Quick Equation Macro @cindex Quick equation macro @cindex Macros as environment wrappers Suppose you would like to have a macro for quick equations. It could be defined like this: @example \newcommand@{\quickeq@}[1]@{\begin@{equation@} #1 \end@{equation@}@} @end example @noindent and used like this: @example Einstein's equation is \quickeq@{E=mc^2 \label@{eq:einstein@}@}. @end example We need to tell @RefTeX{} that any label defined in the argument of the @code{\quickeq} is an equation label. Here is how to do this with lisp: @lisp (setq reftex-label-alist '(("\\quickeq@{@}" ?e nil nil 1 nil))) @end lisp The first element in this list is now the macro with empty braces as an @emph{image} of the macro arguments. @code{?e} indicates that this is an equation label, the different @code{nil} elements indicate to use the default values for equations. The @samp{1} as the fifth element indicates that the context of the label definition should be the first argument of the macro. Here is again how this would look in the customization buffer: @example Reftex Label Alist: [Hide] [INS] [DEL] Package or Detailed : [Value Menu] Detailed: Environment or \macro : [Value Menu] String: \quickeq@{@} Type specification : [Value Menu] Char : e Label prefix string : [Value Menu] Default Label reference format: [Value Menu] Default Context method : [Value Menu] Macro arg nr: 1 Magic words: [INS] [ ] Make TOC entry : [Value Menu] No entry @end example @node Figure Wrapper @subsection Figure Wrapping Macro @cindex Macros as environment wrappers @cindex Figure wrapping macro Suppose you want to make figures not directly with the figure environment, but with a macro like @example \newcommand@{\myfig@}[5][tbp]@{% \begin@{figure@}[#1] \epsimp[#5]@{#2@} \caption@{#3@} \label@{#4@} \end@{figure@}@} @end example @noindent which would be called like @example \myfig[htp]@{filename@}@{caption text@}@{label@}@{1@} @end example Now we need to tell @RefTeX{} that the fourth argument of the @code{\myfig} macro @emph{is itself} a figure label, and where to find the context. @lisp (setq reftex-label-alist '(("\\myfig[]@{@}@{@}@{*@}@{@}" ?f nil nil 3))) @end lisp The empty pairs of brackets indicate the different arguments of the @code{\myfig} macro. The @samp{*} marks the label argument. @code{?f} indicates that this is a figure label which will be listed together with labels from normal figure environments. The @code{nil} entries for prefix and reference format mean to use the defaults for figure labels. The @samp{3} for the context method means to grab the third macro argument: the caption. As a side effect of this configuration, @code{reftex-label} will now insert the required naked label (without the @code{\label} macro) when point is directly after the opening parenthesis of a @code{\myfig} macro argument. Again, here the configuration in the customization buffer: @example [INS] [DEL] Package or Detailed : [Value Menu] Detailed: Environment or \macro : [Value Menu] String: \myfig[]@{@}@{@}@{*@}@{@} Type specification : [Value Menu] Char : f Label prefix string : [Value Menu] Default Label reference format: [Value Menu] Default Context method : [Value Menu] Macro arg nr: 3 Magic words: [INS] [ ] Make TOC entry : [Value Menu] No entry @end example @node Adding Magic Words @subsection Adding Magic Words @cindex Magic words @cindex German magic words @cindex Label category Sometimes you don't want to define a new label environment or macro, but just change the information associated with a label category. Maybe you want to add some magic words, for another language. Changing only the information associated with a label category is done by giving @code{nil} for the environment name and then specify the items you want to define. Here is an example which adds German magic words to all predefined label categories. @lisp (setq reftex-label-alist '((nil ?s nil nil nil ("Kapitel" "Kap." "Abschnitt" "Teil")) (nil ?e nil nil nil ("Gleichung" "Gl.")) (nil ?t nil nil nil ("Tabelle")) (nil ?f nil nil nil ("Figur" "Abbildung" "Abb.")) (nil ?n nil nil nil ("Anmerkung" "Anm.")) (nil ?i nil nil nil ("Punkt")))) @end lisp @node Using \eqref @subsection Using @code{\eqref} @cindex @code{\eqref}, AMS-LaTeX macro @cindex AMS-LaTeX @cindex Label category Another case where one only wants to change the information associated with the label category is to change the macro which is used for referencing the label. When working with the AMS-@LaTeX{}, you might prefer @code{\eqref} for doing equation references. Here is how to do this: @lisp (setq reftex-label-alist '((nil ?e nil "~\\eqref@{%s@}" nil nil))) @end lisp @RefTeX{} has also a predefined symbol for this special purpose. The following is equivalent to the line above. @lisp (setq reftex-label-alist '(AMSTeX)) @end lisp Note that this is automatically done by the @file{amsmath.el} style file of @AUCTeX{} (@pxref{Style Files}); so if you use @AUCTeX{}, this configuration will not be necessary. @node Non-Standard Environments @subsection Non-standard Environments @cindex Non-standard environments @cindex Environments without @code{\begin} @cindex Special parser functions @cindex Parser functions, for special environments Some @LaTeX{} packages define environment-like structures without using the standard @samp{\begin..\end} structure. @RefTeX{} cannot parse these directly, but you can write your own special-purpose parser and use it instead of the name of an environment in an entry for @code{reftex-label-alist}. The function should check if point is currently in the special environment it was written to detect. If so, it must return a buffer position indicating the start of this environment. The return value must be @code{nil} on failure to detect the environment. The function is called with one argument @var{bound}. If non-@code{nil}, @var{bound} is a boundary for backwards searches which should be observed. We will discuss two examples. @cindex LaTeX commands, abbreviated Some people define abbreviations for environments, like @code{\be} for @code{\begin@{equation@}}, and @code{\ee} for @code{\end@{equation@}}. The parser function would have to search backward for these macros. When the first match is @code{\ee}, point is not in this environment. When the first match is @code{\be}, point is in this environment and the function must return the beginning of the match. To avoid scanning too far, we can also look for empty lines which cannot occur inside an equation environment. Here is the setup: @lisp ;; Setup entry in reftex-label-alist, using all defaults for equations (setq reftex-label-alist '((detect-be-ee ?e nil nil nil nil))) (defun detect-be-ee (bound) ;; Search backward for the macros or an empty line (if (re-search-backward "\\(^[ \t]*\n\\|\\\\ee\\>\\)\\|\\(\\\\be\\>\\)" bound t) (if (match-beginning 2) (match-beginning 2) ; Return start of environment nil) ; Return nil because env is closed nil)) ; Return nil for not found @end lisp @cindex @code{linguex}, LaTeX package @cindex LaTeX packages, @code{linguex} A more complex example is the @file{linguex.sty} package which defines list macros @samp{\ex.}, @samp{\a.}, @samp{\b.} etc.@: for lists which are terminated by @samp{\z.} or by an empty line. @example \ex. \label@{ex:12@} Some text in an exotic language ... \a. \label@{ex:13@} more stuff \b. \label@{ex:14@} still more stuff \a. List on a deeper level \b. Another item \b. and the third one \z. \b. Third item on this level. ... text after the empty line terminating all lists @end example The difficulty is that the @samp{\a.} lists can nest and that an empty line terminates all list levels in one go. So we have to count nesting levels between @samp{\a.} and @samp{\z.}. Here is the implementation for @RefTeX{}. @lisp (setq reftex-label-alist '((detect-linguex ?x "ex:" "~\\ref@{%s@}" nil ("Example" "Ex.")))) (defun detect-linguex (bound) (let ((cnt 0)) (catch 'exit (while ;; Search backward for all possible delimiters (re-search-backward (concat "\\(^[ \t]*\n\\)\\|\\(\\\\z\\.\\)\\|" "\\(\\ex[ig]?\\.\\)\\|\\(\\\\a\\.\\)") nil t) ;; Check which delimiter was matched. (cond ((match-beginning 1) ;; empty line terminates all - return nil (throw 'exit nil)) ((match-beginning 2) ;; \z. terminates one list level - decrease nesting count (decf cnt)) ((match-beginning 3) ;; \ex. : return match unless there was a \z. on this level (throw 'exit (if (>= cnt 0) (match-beginning 3) nil))) ((match-beginning 4) ;; \a. : return match when on level 0, otherwise ;; increment nesting count (if (>= cnt 0) (throw 'exit (match-beginning 4)) (incf cnt)))))))) @end lisp @node Putting it Together @subsection Putting it all together When you have to put several entries into @code{reftex-label-alist}, just put them after each other in a list, or create that many templates in the customization buffer. Here is a lisp example which uses several of the entries described above: @lisp (setq reftex-label-alist '(("axiom" ?a "ax:" "~\\ref@{%s@}" nil ("axiom" "ax.") -2) ("theorem" ?h "thr:" "~\\ref@{%s@}" t ("theorem" "theor." "th.") -3) ("\\quickeq@{@}" ?e nil nil 1 nil) AMSTeX ("\\myfig[]@{@}@{@}@{*@}@{@}" ?f nil nil 3) (detect-linguex ?x "ex:" "~\\ref@{%s@}" nil ("Example" "Ex.")))) @end lisp @node Reference Info @section Reference Info @findex reftex-view-crossref @findex reftex-mouse-view-crossref @cindex Cross-references, displaying @cindex Reference info @cindex Displaying cross-references @cindex Viewing cross-references @kindex C-c & @kindex S-mouse-2 When point is idle for more than @code{reftex-idle-time} seconds on the argument of a @code{\ref} macro, the echo area will display some information about the label referenced there. Note that the information is only displayed if the echo area is not occupied by a different message. @RefTeX{} can also display the label definition corresponding to a @code{\ref} macro, or all reference locations corresponding to a @code{\label} macro. @xref{Viewing Cross-References}, for more information. @node Reference Styles @section Reference Styles In case you defined your own macros for referencing or you are using @LaTeX{} packages providing specialized macros to be used instead of @code{\ref}, @RefTeX{} provides ways to select and insert them in a convenient way. @RefTeX{} comes equipped with a set of so-called reference styles where each relates to one or more reference macros. The standard macros @samp{\ref} and @samp{\pageref} or provided by the ``Default'' style. The ``Varioref'' style offers macros for the @samp{varioref} @LaTeX{} package (@samp{\vref}, @samp{\Vref}, @samp{\Ref}, @samp{\vpageref}), ``Fancyref'' for the @samp{fancyref} package (@samp{\fref}, @samp{\Fref}) and ``Hyperref'' for the @samp{hyperref} package (@samp{\autoref}, @samp{\autopageref}). @vindex reftex-ref-style-default-list A style can be toggled by selecting the respective entry in the @samp{Reference Style} menu. Changes made through the menu will only last for the Emacs session. In order to configure a preference permanently, the variable @code{reftex-ref-style-default-list} should be customized. This variable specifies the list of styles to be activated. It can also be set as a file variable if the preference should be set for a specific file. @vindex reftex-ref-style-alist In case the built-in styles do not suffice, you can add additional macros and styles to the variable @code{reftex-ref-style-alist}. Those do not necessarily have to be related to a certain @LaTeX{} package but can follow an arbitrary grouping rule. For example you could define a style called ``Personal'' for your personal referencing macros. (When changing the variable you should be aware that other Emacs packages, like @AUCTeX{}, might rely on the entries from the default value to be present.) Once a style is active the macros it relates to are available for selection when you are about to insert a reference. In general this process involves three steps: the selection of a reference macro, a label type and a label. Reference macros can be chosen in the first and last step. @vindex reftex-ref-macro-prompt In the first step you will be presented with a list of macros from which you can select one by typing a single key. If you dislike having an extra step for reference macro selection, you can disable it by customizing @code{reftex-ref-macro-prompt} and relying only on the selection facilities provided in the last step. In the last step, i.e., the label selection, two key bindings are provided to set the reference macro. Type @kbd{v} in order to cycle forward through the list of available macros or @kbd{V} to cycle backward. The mode line of the selection buffer shows the macro currently selected. In case you are not satisfied with the order of macros when cycling through them you should adapt the order of entries in the variable @code{reftex-ref-style-alist} to fit your liking. For each entry in @code{reftex-ref-style-alist} a function with the name @code{reftex--} (e.g., @code{reftex-varioref-vref}) will be created automatically by @RefTeX{}. These functions can be used instead of @kbd{C-c )} and provide an alternative way of having your favorite referencing macro preselected and if cycling through the macros seems inconvenient to you.@footnote{You could, e.g., bind @code{reftex-varioref-vref} to @kbd{C-c v} and @code{reftex-fancyref-fref} to @kbd{C-c f}.} @cindex @code{varioref}, LaTeX package @cindex LaTeX packages, @code{varioref} @cindex @code{fancyref}, LaTeX package @cindex LaTeX packages, @code{fancyref} @vindex reftex-vref-is-default @r{(deprecated)} @vindex reftex-fref-is-default @r{(deprecated)} In former versions of @RefTeX{} only support for @code{varioref} and @code{fancyref} was included. @code{varioref} is a @LaTeX{} package to create cross-references with page information. @code{fancyref} is a package where a macro call like @code{\fref@{@var{fig:map-of-germany}@}} creates not only the number of the referenced counter but also the complete text around it, like @samp{Figure 3 on the preceding page}. In order to make it work you need to use label prefixes like @samp{fig:} consistently---something @RefTeX{} does automatically. For each of these packages a variable could be configured to make its macros to take precedence over @code{\ref}. Those were @code{reftex-vref-is-default} and @code{reftex-fref-is-default} respectively. While still working, these variables are deprecated now. Instead of setting them, the variable @code{reftex-ref-style-default-list} should be adapted now. @node LaTeX xr Package @section @code{xr}: Cross-Document References @cindex @code{xr}, LaTeX package @cindex LaTeX packages, @code{xr} @cindex @code{\externaldocument} @cindex External documents @cindex References to external documents @cindex Cross-document references The @LaTeX{} package @code{xr} makes it possible to create references to labels defined in external documents. The preamble of a document using @code{xr} will contain something like this: @example \usepackage@{xr@} \externaldocument[V1-]@{volume1@} \externaldocument[V3-]@{volume3@} @end example @noindent and we can make references to any labels defined in these external documents by using the prefixes @samp{V1-} and @samp{V3-}, respectively. @RefTeX{} can be used to create such references as well. Start the referencing process normally, by pressing @kbd{C-c )}. Select a label type if necessary. When you see the label selection buffer, pressing @kbd{x} will switch to the label selection buffer of one of the external documents. You may then select a label as before and @RefTeX{} will insert it along with the required prefix. For this kind of inter-document cross-references, saving of parsing information and the use of multiple selection buffers can mean a large speed-up (@pxref{Optimizations}). @node Citations @chapter Citations @cindex Citations @cindex @code{\cite} Citations in @LaTeX{} are done with the @code{\cite} macro or variations of it. The argument of the macro is a citation key which identifies an article or book in either a @BibTeX{} database file or in an explicit @code{thebibliography} environment in the document. @RefTeX{}'s support for citations helps to select the correct key quickly. @menu * Creating Citations:: How to create them. * Citation Styles:: Natbib, Harvard, Chicago and Co. * Citation Info:: View the corresponding database entry. * Chapterbib and Bibunits:: Multiple bibliographies in a Document. * Citations Outside LaTeX:: How to make citations in Emails etc. * BibTeX Database Subsets:: Extract parts of a big database. @end menu @node Creating Citations @section Creating Citations @cindex Creating citations @cindex Citations, creating @findex reftex-citation @kindex C-c [ @cindex Selection buffer, citations @cindex Selection process In order to create a citation, press @kbd{C-c [}. @RefTeX{} then prompts for a regular expression which will be used to search through the database and present the list of matches to choose from in a selection process similar to that for selecting labels (@pxref{Referencing Labels}). The regular expression uses an extended syntax: @samp{&&} defines a logic @code{and} for regular expressions. For example @samp{Einstein&&Bose} will match all articles which mention Bose-Einstein condensation, or which are co-authored by Bose and Einstein. When entering the regular expression, you can complete on known citation keys. @RefTeX{} also offers a default when prompting for a regular expression. This default is the word before the cursor or the word before the current @samp{\cite} command. Sometimes this may be a good search key. @cindex @code{\bibliography} @cindex @code{thebibliography}, LaTeX environment @cindex @code{BIBINPUTS}, environment variable @cindex @code{TEXBIB}, environment variable @RefTeX{} prefers to use @BibTeX{} database files specified with a @code{\bibliography} macro to collect its information. Just like @BibTeX{}, it will search for the specified files in the current directory and along the path given in the environment variable @code{BIBINPUTS}. If you do not use @BibTeX{}, but the document contains an explicit @code{thebibliography} environment, @RefTeX{} will collect its information from there. Note that in this case the information presented in the selection buffer will just be a copy of relevant @code{\bibitem} entries, not the structured listing available with @BibTeX{} database files. @kindex ? In the selection buffer, the following keys provide special commands. A summary of this information is always available from the selection process by pressing @kbd{?}. @table @kbd @tablesubheading{General} @item ? Show a summary of available commands. @item 0-9,- Prefix argument. @tablesubheading{Moving around} @item n Go to next article. @item p Go to previous article. @tablesubheading{Access to full database entries} @item @key{SPC} Show the database entry corresponding to the article at point, in another window. See also the @kbd{f} key. @item f Toggle follow mode. When follow mode is active, the other window will always display the full database entry of the current article. This is equivalent to pressing @key{SPC} after each cursor motion. With @BibTeX{} entries, follow mode can be rather slow. @tablesubheading{Selecting entries and creating the citation} @item @key{RET} Insert a citation referencing the article at point into the buffer from which the selection process was started. @item mouse-2 @vindex reftex-highlight-selection Clicking with mouse button 2 on a citation will accept it like @key{RET} would. See also variable @code{reftex-highlight-selection}, @ref{Options - Misc}. @item m Mark the current entry. When one or several entries are marked, pressing @kbd{a} or @kbd{A} accepts all marked entries. Also, @key{RET} behaves like the @kbd{a} key. @item u Unmark a marked entry. @item a Accept all (marked) entries in the selection buffer and create a single @code{\cite} macro referring to them. @item A Accept all (marked) entries in the selection buffer and create a separate @code{\cite} macro for each of it. @item e Create a new @BibTeX{} database file which contains all @i{marked} entries in the selection buffer. If no entries are marked, all entries are selected. @item E Create a new @BibTeX{} database file which contains all @i{unmarked} entries in the selection buffer. If no entries are marked, all entries are selected. @item @key{TAB} Enter a citation key with completion. This may also be a key which does not yet exist. @item . Show insertion point in another window. This is the point from where you called @code{reftex-citation}. @tablesubheading{Exiting} @item q Exit the selection process without inserting a citation into the buffer. @tablesubheading{Updating the buffer} @item g Start over with a new regular expression. The full database will be rescanned with the new expression (see also @kbd{r}). @c FIXME: Should we use something else here? r is usually rescan! @item r Refine the current selection with another regular expression. This will @emph{not} rescan the entire database, but just the already selected entries. @end table @vindex reftex-select-bib-map In order to define additional commands for this selection process, the keymap @code{reftex-select-bib-map} may be used. Note that if you do not use Emacs to edit the @BibTeX{} database files, @RefTeX{} will ask if the related buffers should be updated once it detects that the files were changed externally. If you do not want to be bothered by such queries, you can activate Auto Revert mode for these buffers by adding the following expression to your init file: @lisp (add-hook 'bibtex-mode-hook 'turn-on-auto-revert-mode) @end lisp @node Citation Styles @section Citation Styles @cindex Citation styles @cindex Citation styles, @code{natbib} @cindex Citation styles, @code{harvard} @cindex Citation styles, @code{chicago} @cindex Citation styles, @code{jurabib} @cindex Citation styles, @ConTeXt{} @cindex @code{natbib}, citation style @cindex @code{harvard}, citation style @cindex @code{chicago}, citation style @cindex @code{jurabib}, citation style @cindex @ConTeXt{}, citation style @vindex reftex-cite-format The standard @LaTeX{} macro @code{\cite} works well with numeric or simple key citations. To deal with the more complex task of author-year citations as used in many natural sciences, a variety of packages has been developed which define derived forms of the @code{\cite} macro. @RefTeX{} can be configured to produce these citation macros as well by setting the variable @code{reftex-cite-format}. For the most commonly used @LaTeX{} packages (@code{natbib}, @code{harvard}, @code{chicago}, @code{jurabib}) and for @ConTeXt{} this may be done from the menu, under @code{Ref->Citation Styles}. Since there are usually several macros to create the citations, executing @code{reftex-citation} (@kbd{C-c [}) starts by prompting for the correct macro. For the Natbib style, this looks like this: @example SELECT A CITATION FORMAT [^M] \cite@{%l@} [t] \citet@{%l@} [T] \citet*@{%l@} [p] \citep@{%l@} [P] \citep*@{%l@} [e] \citep[e.g.][]@{%l@} [s] \citep[see][]@{%l@} [a] \citeauthor@{%l@} [A] \citeauthor*@{%l@} [y] \citeyear@{%l@} @end example @vindex reftex-cite-prompt-optional-args If citation formats contain empty pairs of square brackets, @RefTeX{} will prompt for values of these optional arguments if you call the @code{reftex-citation} command with a @kbd{C-u} prefix. Following the most generic of these packages, @code{natbib}, the builtin citation packages always accept the @kbd{t} key for a @emph{textual} citation (like: @code{Jones et al. (1997) have shown...}) as well as the @kbd{p} key for a parenthetical citation (like: @code{As shown earlier (Jones et al, 1997)}). To make one of these styles the default, customize the variable @code{reftex-cite-format} or put into @file{.emacs}: @lisp (setq reftex-cite-format 'natbib) @end lisp You can also use @AUCTeX{} style files to automatically set the citation style based on the @code{usepackage} commands in a given document. @xref{Style Files}, for information on how to set up the style files correctly. @node Citation Info @section Citation Info @cindex Displaying citations @cindex Citations, displaying @cindex Citation info @cindex Viewing citations @kindex C-c & @kindex S-mouse-2 @findex reftex-view-crossref @findex reftex-mouse-view-crossref When point is idle for more than @code{reftex-idle-time} seconds on the argument of a @code{\cite} macro, the echo area will display some information about the article cited there. Note that the information is only displayed if the echo area is not occupied by a different message. @RefTeX{} can also display the @code{\bibitem} or @BibTeX{} database entry corresponding to a @code{\cite} macro, or all citation locations corresponding to a @code{\bibitem} or @BibTeX{} database entry. @xref{Viewing Cross-References}. @node Chapterbib and Bibunits @section Chapterbib and Bibunits @cindex @code{chapterbib}, LaTeX package @cindex @code{bibunits}, LaTeX package @cindex Bibliographies, multiple @code{chapterbib} and @code{bibunits} are two @LaTeX{} packages which produce multiple bibliographies in a document. This is no problem for @RefTeX{} as long as all bibliographies use the same @BibTeX{} database files. If they do not, it is best to have each document part in a separate file (as it is required for @code{chapterbib} anyway). Then @RefTeX{} will still scan the locally relevant databases correctly. If you have multiple bibliographies within a @emph{single file}, this may or may not be the case. @node Citations Outside LaTeX @section Citations outside @LaTeX{} @cindex Citations outside LaTeX @vindex reftex-default-bibliography The command @code{reftex-citation} can also be executed outside a @LaTeX{} buffer. This can be useful to reference articles in the mail buffer and other documents. You should @emph{not} enter @code{reftex-mode} for this, just execute the command. The list of @BibTeX{} files will in this case be taken from the variable @code{reftex-default-bibliography}. Setting the variable @code{reftex-cite-format} to the symbol @code{locally} does a decent job of putting all relevant information about a citation directly into the buffer. Here is the lisp code to add the @kbd{C-c [} binding to the mail buffer. It also provides a local binding for @code{reftex-cite-format}. @lisp (add-hook 'mail-setup-hook (lambda () (define-key mail-mode-map "\C-c[" (lambda () (interactive) (let ((reftex-cite-format 'locally)) (reftex-citation)))))) @end lisp @node BibTeX Database Subsets @section Database Subsets @cindex BibTeX database subsets @findex reftex-create-bibtex-file @RefTeX{} offers two ways to create a new @BibTeX{} database file. The first option produces a file which contains only the entries actually referenced in the current document. This can be useful if the database is only meant for a single document and you want to clean it of old and unused ballast. It can also be useful while writing a document together with collaborators, in order to avoid sending around the entire (possibly very large) database. To create the file, use @kbd{M-x reftex-create-bibtex-file}, also available from the menu under @code{Ref->Global Actions->Create Bibtex File}. The command will prompt for a @BibTeX{} file name and write the extracted entries to that file. The second option makes use of the selection process started by the command @kbd{C-c [} (@pxref{Creating Citations}). This command uses a regular expression to select entries, and lists them in a formatted selection buffer. After pressing the @kbd{e} key (mnemonics: Export), the command will prompt for the name of a new @BibTeX{} file and write the selected entries to that file. You can also first mark some entries in the selection buffer with the @kbd{m} key and then export either the @i{marked} entries (with the @kbd{e} key) or the @i{unmarked} entries (with the @kbd{E} key). @node Index Support @chapter Index Support @cindex Index Support @cindex @code{\index} @LaTeX{} has builtin support for creating an Index. The @LaTeX{} core supports two different indices, the standard index and a glossary. With the help of special @LaTeX{} packages (@file{multind.sty} or @file{index.sty}), any number of indices can be supported. Index entries are created with the @code{\index@{@var{entry}@}} macro. All entries defined in a document are written out to the @file{.aux} file. A separate tool must be used to convert this information into a nicely formatted index. Tools used with @LaTeX{} include @code{MakeIndex} and @code{xindy}. Indexing is a very difficult task. It must follow strict conventions to make the index consistent and complete. There are basically two approaches one can follow, and both have their merits. @enumerate @item Part of the indexing should already be done with the markup. The document structure should be reflected in the index, so when starting new sections, the basic topics of the section should be indexed. If the document contains definitions, theorems or the like, these should all correspond to appropriate index entries. This part of the index can very well be developed along with the document. Often it is worthwhile to define special purpose macros which define an item and at the same time make an index entry, possibly with special formatting to make the reference page in the index bold or underlined. To make @RefTeX{} support for indexing possible, these special macros must be added to @RefTeX{}'s configuration (@pxref{Defining Index Macros}). @item The rest of the index is often just a collection of where in the document certain words or phrases are being used. This part is difficult to develop along with the document, because consistent entries for each occurrence are needed and are best selected when the document is ready. @RefTeX{} supports this with an @emph{index phrases file} which collects phrases and helps indexing the phrases globally. @end enumerate Before you start, you need to make sure that @RefTeX{} knows about the index style being used in the current document. @RefTeX{} has builtin support for the default @code{\index} and @code{\glossary} macros. Other @LaTeX{} packages, like the @file{multind} or @file{index} package, redefine the @code{\index} macro to have an additional argument, and @RefTeX{} needs to be configured for those. A sufficiently new version of @AUCTeX{} (9.10c or later) will do this automatically. If you really don't use @AUCTeX{} (you should!), this configuration needs to be done by hand with the menu (@code{Ref->Index Style}), or globally for all your documents with @lisp (setq reftex-index-macros '(multind)) @r{or} (setq reftex-index-macros '(index)) @end lisp @menu * Creating Index Entries:: Macros and completion of entries. * The Index Phrases File:: A special file for global indexing. * Displaying and Editing the Index:: The index editor. * Builtin Index Macros:: The index macros RefTeX knows about. * Defining Index Macros:: ... and macros it doesn't. @end menu @node Creating Index Entries @section Creating Index Entries @cindex Creating index entries @cindex Index entries, creating @kindex C-c < @findex reftex-index @kindex C-c / @findex reftex-index-selection-or-word In order to index the current selection or the word at the cursor press @kbd{C-c /} (@code{reftex-index-selection-or-word}). This causes the selection or word @samp{@var{word}} to be replaced with @samp{\index@{@var{word}@}@var{word}}. The macro which is used (@code{\index} by default) can be configured with the variable @code{reftex-index-default-macro}. When the command is called with a prefix argument (@kbd{C-u C-c /}), you get a chance to edit the generated index entry. Use this to change the case of the word or to make the entry a subentry, for example by entering @samp{main!sub!@var{word}}. When called with two raw @kbd{C-u} prefixes (@kbd{C-u C-u C-c /}), you will be asked for the index macro as well. When there is nothing selected and no word at point, this command will just call @code{reftex-index}, described below. In order to create a general index entry, press @kbd{C-c <} (@code{reftex-index}). @RefTeX{} will prompt for one of the available index macros and for its arguments. Completion will be available for the index entry and, if applicable, the index tag. The index tag is a string identifying one of multiple indices. With the @file{multind} and @file{index} packages, this tag is the first argument to the redefined @code{\index} macro. @node The Index Phrases File @section The Index Phrases File @cindex Index phrase file @cindex Phrase file @kindex C-c | @findex reftex-index-visit-phrases-buffer @cindex Macro definition lines, in phrase buffer @RefTeX{} maintains a file in which phrases can be collected for later indexing. The file is located in the same directory as the master file of the document and has the extension @file{.rip} (@b{R}eftex @b{I}ndex @b{P}hrases). You can create or visit the file with @kbd{C-c |} (@code{reftex-index-visit-phrases-buffer}). If the file is empty it is initialized by inserting a file header which contains the definition of the available index macros. This list is initialized from @code{reftex-index-macros} (@pxref{Defining Index Macros}). You can edit the header as needed, but if you define new @LaTeX{} indexing macros, don't forget to add them to @code{reftex-index-macros} as well. Here is a phrase file header example: @example % -*- mode: reftex-index-phrases -*- % Key Macro Format Repeat %---------------------------------------------------------- >>>INDEX_MACRO_DEFINITION: i \index@{%s@} t >>>INDEX_MACRO_DEFINITION: I \index*@{%s@} nil >>>INDEX_MACRO_DEFINITION: g \glossary@{%s@} t >>>INDEX_MACRO_DEFINITION: n \index*[name]@{%s@} nil %---------------------------------------------------------- @end example The macro definition lines consist of a unique letter identifying a macro, a format string and the @var{repeat} flag, all separated by @key{TAB}. The format string shows how the macro is to be applied, the @samp{%s} will be replaced with the index entry. The repeat flag indicates if @var{word} is indexed by the macro as @samp{\index@{@var{word}@}} (@var{repeat} = @code{nil}) or as @samp{\index@{@var{word}@}@var{word}} (@var{repeat} = @code{t}). In the above example it is assumed that the macro @code{\index*@{@var{word}@}} already typesets its argument in the text, so that it is unnecessary to repeat @var{word} outside the macro. @menu * Collecting Phrases:: Collecting from document or external. * Consistency Checks:: Check for duplicates etc. * Global Indexing:: The interactive indexing process. @end menu @node Collecting Phrases @subsection Collecting Phrases @cindex Collecting index phrases @cindex Index phrases, collection @cindex Phrases, collecting Phrases for indexing can be collected while writing the document. The command @kbd{C-c \} (@code{reftex-index-phrase-selection-or-word}) copies the current selection (if active) or the word near point into the phrases buffer. It then selects this buffer, so that the phrase line can be edited. To return to the @LaTeX{} document, press @kbd{C-c C-c} (@code{reftex-index-phrases-save-and-return}). You can also prepare the list of index phrases in a different way and copy it into the phrases file. For example you might want to start from a word list of the document and remove all words which should not be indexed. The phrase lines in the phrase buffer must have a specific format. @RefTeX{} will use font-lock to indicate if a line has the proper format. A phrase line looks like this: @example [@var{key}] @var{phrase} [ @var{arg}[&&@var{arg}]... [ || @var{arg}]...] @end example @code{} stands for white space containing at least one @key{TAB}. @var{key} must be at the start of the line and is the character identifying one of the macros defined in the file header. It is optional; when omitted, the first macro definition line in the file will be used for this phrase. The @var{phrase} is the phrase to be searched for when indexing. It may contain several words separated by spaces. By default the search phrase is also the text entered as argument of the index macro. If you want the index entry to be different from the search phrase, enter another @key{TAB} and the index argument @var{arg}. If you want to have each match produce several index entries, separate the different index arguments with @samp{ && }@footnote{@samp{&&} with optional spaces, see @code{reftex-index-phrases-logical-and-regexp}.}. If you want to be able to choose at each match between several different index arguments, separate them with @samp{ || }@footnote{@samp{||} with optional spaces, see @code{reftex-index-phrases-logical-or-regexp}.}. Here is an example: @example %-------------------------------------------------------------------- I Sun i Planet Planets i Vega Stars!Vega Jupiter Planets!Jupiter i Mars Planets!Mars || Gods!Mars || Chocolate Bars!Mars i Pluto Planets!Pluto && Kuiper Belt Objects!Pluto @end example So @samp{Sun} will be indexed directly as @samp{\index*@{Sun@}}, while @samp{Planet} will be indexed as @samp{\index@{Planets@}Planet}. @samp{Vega} will be indexed as a subitem of @samp{Stars}. The @samp{Jupiter} line will also use the @samp{i} macro as it was the first macro definition in the file header (see above example). At each occurrence of @samp{Mars} you will be able choose between indexing it as a subitem of @samp{Planets}, @samp{Gods} or @samp{Chocolate Bars}. Finally, every occurrence of @samp{Pluto} will be indexed as @samp{\index@{Planets!Pluto@}\index@{Kuiper Belt Objects!Pluto@}Pluto} and will therefore create two different index entries. @node Consistency Checks @subsection Consistency Checks @cindex Index phrases, consistency checks @cindex Phrases, consistency checks @cindex Consistency check for index phrases @kindex C-c C-s Before indexing the phrases in the phrases buffer, they should be checked carefully for consistency. A first step is to sort the phrases alphabetically; this is done with the command @kbd{C-c C-s} (@code{reftex-index-sort-phrases}). It will sort all phrases in the buffer alphabetically by search phrase. If you want to group certain phrases and only sort within the groups, insert empty lines between the groups. Sorting will only change the sequence of phrases within each group (see the variable @code{reftex-index-phrases-sort-in-blocks}). @kindex C-c C-i A useful command is @kbd{C-c C-i} (@code{reftex-index-phrases-info}) which lists information about the phrase at point, including an example of how the index entry will look like and the number of expected matches in the document. @kindex C-c C-t Another important check is to find out if there are double or overlapping entries in the buffer. For example if you are first searching and indexing @samp{Mars} and then @samp{Planet Mars}, the second phrase will not match because of the index macro inserted before @samp{Mars} earlier. The command @kbd{C-c C-t} (@code{reftex-index-find-next-conflict-phrase}) finds the next phrase in the buffer which is either duplicate or a subphrase of another phrase. In order to check the whole buffer like this, start at the beginning and execute this command repeatedly. @node Global Indexing @subsection Global Indexing @cindex Global indexing @cindex Indexing, global @cindex Indexing, from @file{phrases} buffer Once the index phrases have been collected and organized, you are set for global indexing. I recommend to do this only on an otherwise finished document. Global indexing starts from the phrases buffer. There are several commands which start indexing: @kbd{C-c C-x} acts on the current phrase line, @kbd{C-c C-r} on all lines in the current region and @kbd{C-c C-a} on all phrase lines in the buffer. It is probably good to do indexing in small chunks since your concentration may not last long enough to do everything in one go. @RefTeX{} will start at the first phrase line and search the phrase globally in the whole document. At each match it will stop, compute the replacement string and offer you the following choices@footnote{Windows users: Restrict yourself to the described keys during indexing. Pressing @key{Help} at the indexing prompt can apparently hang Emacs.}: @table @kbd @item y Replace this match with the proposed string. @item n Skip this match. @item ! Replace this and all further matches in this file. @item q Skip this match, start with next file. @item Q Skip this match, start with next phrase. @item o Select a different indexing macro for this match. @item 1-9 Select one of multiple index keys (those separated with @samp{||}). @item e Edit the replacement text. @item C-r Recursive edit. Use @kbd{C-M-c} to return to the indexing process. @item s Save this buffer and ask again about the current match. @item S Save all document buffers and ask again about the current match. @item C-g Abort the indexing process. @end table The @samp{Find and Index in Document} menu in the phrases buffer also lists a few options for the indexing process. The options have associated customization variables to set the defaults (@pxref{Options - Index Support}). Here is a short explanation of what the options do: @table @i @item Match Whole Words When searching for index phrases, make sure whole words are matched. This should probably always be on. @item Case Sensitive Search Search case sensitively for phrases. I recommend to have this setting off, in order to match the capitalized words at the beginning of a sentence, and even typos. You can always say @emph{no} at a match you do not like. @item Wrap Long Lines Inserting index macros increases the line length. Turn this option on to allow @RefTeX{} to wrap long lines. @item Skip Indexed Matches When this is on, @RefTeX{} will at each match try to figure out if this match is already indexed. A match is considered indexed if it is either the argument of an index macro, or if an index macro is directly (without whitespace separation) before or after the match. Index macros are those configured in @code{reftex-index-macros}. Intended for re-indexing a documents after changes have been made. @end table Even though indexing should be the last thing you do to a document, you are bound to make changes afterwards. Indexing then has to be applied to the changed regions. The command @code{reftex-index-phrases-apply-to-region} is designed for this purpose. When called from a @LaTeX{} document with active region, it will apply @code{reftex-index-all-phrases} to the current region. @node Displaying and Editing the Index @section Displaying and Editing the Index @cindex Displaying the Index @cindex Editing the Index @cindex Index entries, creating @cindex Index, displaying @cindex Index, editing @kindex C-c > @findex reftex-display-index In order to compile and display the index, press @kbd{C-c >}. If the document uses multiple indices, @RefTeX{} will ask you to select one. Then, all index entries will be sorted alphabetically and displayed in a special buffer, the @file{*Index*} buffer. From that buffer you can check and edit each entry. The index can be restricted to the current section or the region. Then only entries in that part of the document will go into the compiled index. To restrict to the current section, use a numeric prefix @samp{2}, thus press @kbd{C-u 2 C-c >}. To restrict to the current region, make the region active and use a numeric prefix @samp{3} (press @kbd{C-u 3 C-c >}). From within the @file{*Index*} buffer the restriction can be moved from one section to the next by pressing the @kbd{<} and @kbd{>} keys. One caveat: @RefTeX{} finds the definition point of an index entry by searching near the buffer position where it had found to macro during scanning. If you have several identical index entries in the same buffer and significant changes have shifted the entries around, you must rescan the buffer to ensure the correspondence between the @file{*Index*} buffer and the definition locations. It is therefore advisable to rescan the document (with @kbd{r} or @kbd{C-u r}) frequently while editing the index from the @file{*Index*} buffer. @kindex ? Here is a list of special commands available in the @file{*Index*} buffer. A summary of this information is always available by pressing @kbd{?}. @table @kbd @tablesubheading{General} @item ? Display a summary of commands. @item 0-9, - Prefix argument. @tablesubheading{Moving around} @item ! A..Z Pressing any capital letter will jump to the corresponding section in the @file{*Index*} buffer. The exclamation mark is special and jumps to the first entries alphabetically sorted below @samp{A}. These are usually non-alphanumeric characters. @item n Go to next entry. @item p Go to previous entry. @tablesubheading{Access to document locations} @item @key{SPC} Show the place in the document where this index entry is defined. @item @key{TAB} Go to the definition of the current index entry in another window. @item @key{RET} Go to the definition of the current index entry and hide the @file{*Index*} buffer window. @item f @vindex reftex-index-follow-mode @vindex reftex-revisit-to-follow Toggle follow mode. When follow mode is active, the other window will always show the location corresponding to the line in the @file{*Index*} buffer at point. This is similar to pressing @key{SPC} after each cursor motion. The default for this flag can be set with the variable @code{reftex-index-follow-mode}. Note that only context in files already visited is shown. @RefTeX{} will not visit a file just for follow mode. See, however, the variable @code{reftex-revisit-to-follow}. @tablesubheading{Entry editing} @item e Edit the current index entry. In the minibuffer, you can edit the index macro which defines this entry. @item C-k Kill the index entry. Currently not implemented because I don't know how to implement an @code{undo} function for this. @item * Edit the @var{key} part of the entry. This is the initial part of the entry which determines the location of the entry in the index. @item | Edit the @var{attribute} part of the entry. This is the part after the vertical bar. With @code{MakeIndex}, this part is an encapsulating macro. With @code{xindy}, it is called @emph{attribute} and is a property of the index entry that can lead to special formatting. When called with @kbd{C-u} prefix, kill the entire @var{attribute} part. @item @@ Edit the @var{visual} part of the entry. This is the part after the @samp{@@} which is used by @code{MakeIndex} to change the visual appearance of the entry in the index. When called with @kbd{C-u} prefix, kill the entire @var{visual} part. @item ( Toggle the beginning of page range property @samp{|(} of the entry. @item ) Toggle the end of page range property @samp{|)} of the entry. @item _ Make the current entry a subentry. This command will prompt for the superordinate entry and insert it. @item ^ Remove the highest superordinate entry. If the current entry is a subitem (@samp{aaa!bbb!ccc}), this function moves it up the hierarchy (@samp{bbb!ccc}). @tablesubheading{Exiting} @item q Hide the @file{*Index*} buffer. @item k Kill the @file{*Index*} buffer. @item C-c = Switch to the Table of Contents buffer of this document. @tablesubheading{Controlling what gets displayed} @item c @vindex reftex-index-include-context Toggle the display of short context in the @file{*Index*} buffer. The default for this flag can be set with the variable @code{reftex-index-include-context}. @item @} Restrict the index to a single document section. The corresponding section number will be displayed in the @code{R<>} indicator in the mode line and in the header of the @file{*Index*} buffer. @item @{ Widen the index to contain all entries of the document. @item < When the index is currently restricted, move the restriction to the previous section. @item > When the index is currently restricted, move the restriction to the next section. @tablesubheading{Updating the buffer} @item g Rebuild the @file{*Index*} buffer. This does @emph{not} rescan the document. However, it sorts the entries again, so that edited entries will move to the correct position. @item r @vindex reftex-enable-partial-scans Reparse the @LaTeX{} document and rebuild the @file{*Index*} buffer. When @code{reftex-enable-partial-scans} is non-@code{nil}, rescan only the file this location is defined in, not the entire document. @item C-u r Reparse the @emph{entire} @LaTeX{} document and rebuild the @file{*Index*} buffer. @item s Switch to a different index (for documents with multiple indices). @end table @node Builtin Index Macros @section Builtin Index Macros @cindex Builtin index macros @cindex Index macros, builtin @vindex reftex-index-macros @cindex @code{multind}, LaTeX package @cindex @code{index}, LaTeX package @cindex LaTeX packages, @code{multind} @cindex LaTeX packages, @code{index} @RefTeX{} by default recognizes the @code{\index} and @code{\glossary} macros which are defined in the @LaTeX{} core. It has also builtin support for the re-implementations of @code{\index} in the @file{multind} and @file{index} packages. However, since the different definitions of the @code{\index} macro are incompatible, you will have to explicitly specify the index style used. @xref{Creating Index Entries}, for information on how to do that. @node Defining Index Macros @section Defining Index Macros @cindex Defining Index Macros @cindex Index macros, defining @vindex reftex-index-macros When writing a document with an index you will probably define additional macros which make entries into the index. Let's look at an example. @example \newcommand@{\ix@}[1]@{#1\index@{#1@}@} \newcommand@{\nindex@}[1]@{\textit@{#1@}\index[name]@{#1@}@} \newcommand@{\astobj@}[1]@{\index@{Astronomical Objects!#1@}@} @end example The first macro @code{\ix} typesets its argument in the text and places it into the index. The second macro @code{\nindex} typesets its argument in the text and places it into a separate index with the tag @samp{name}@footnote{We are using the syntax of the @file{index} package here.}. The last macro also places its argument into the index, but as subitems under the main index entry @samp{Astronomical Objects}. Here is how to make @RefTeX{} recognize and correctly interpret these macros, first with Emacs Lisp. @lisp (setq reftex-index-macros '(("\\ix@{*@}" "idx" ?x "" nil nil) ("\\nindex@{*@}" "name" ?n "" nil nil) ("\\astobj@{*@}" "idx" ?o "Astronomical Objects!" nil t))) @end lisp Note that the index tag is @samp{idx} for the main index, and @samp{name} for the name index. @samp{idx} and @samp{glo} are reserved for the default index and for the glossary. The character arguments @code{?x}, @code{?n}, and @code{?o} are for quick identification of these macros when @RefTeX{} inserts new index entries with @code{reftex-index}. These codes need to be unique. @code{?i}, @code{?I}, and @code{?g} are reserved for the @code{\index}, @code{\index*}, and @code{\glossary} macros, respectively. The following string is empty unless your macro adds a superordinate entry to the index key; this is the case for the @code{\astobj} macro. The next entry can be a hook function to exclude certain matches, it almost always can be @code{nil}. The final element in the list indicates if the text being indexed needs to be repeated outside the macro. For the normal index macros, this should be @code{t}. Only if the macro typesets the entry in the text (like @code{\ix} and @code{\nindex} in the example do), this should be @code{nil}. To do the same thing with customize, you need to fill in the templates like this: @example Repeat: [INS] [DEL] List: Macro with args: \ix@{*@} Index Tag : [Value Menu] String: idx Access Key : x Key Prefix : Exclusion hook : nil Repeat Outside : [Toggle] off (nil) [INS] [DEL] List: Macro with args: \nindex@{*@} Index Tag : [Value Menu] String: name Access Key : n Key Prefix : Exclusion hook : nil Repeat Outside : [Toggle] off (nil) [INS] [DEL] List: Macro with args: \astobj@{*@} Index Tag : [Value Menu] String: idx Access Key : o Key Prefix : Astronomical Objects! Exclusion hook : nil Repeat Outside : [Toggle] on (non-nil) [INS] @end example With the macro @code{\ix} defined, you may want to change the default macro used for indexing a text phrase (@pxref{Creating Index Entries}). This would be done like this @lisp (setq reftex-index-default-macro '(?x "idx")) @end lisp which specifies that the macro identified with the character @code{?x} (the @code{\ix} macro) should be used for indexing phrases and words already in the buffer with @kbd{C-c /} (@code{reftex-index-selection-or-word}). The index tag is "idx". @node Viewing Cross-References @chapter Viewing Cross-References @findex reftex-view-crossref @findex reftex-mouse-view-crossref @kindex C-c & @kindex S-mouse-2 @RefTeX{} can display cross-referencing information. This means, if two document locations are linked, @RefTeX{} can display the matching location(s) in another window. The @code{\label} and @code{\ref} macros are one way of establishing such a link. Also, a @code{\cite} macro is linked to the corresponding @code{\bibitem} macro or a @BibTeX{} database entry. The feature is invoked by pressing @kbd{C-c &} (@code{reftex-view-crossref}) while point is on the @var{key} argument of a macro involved in cross-referencing. You can also click with @kbd{S-mouse-2} on the macro argument. Here is what will happen for individual classes of macros: @table @asis @item @code{\ref} @cindex @code{\ref} Display the corresponding label definition. All usual variants@footnote{all macros that start with @samp{ref} or end with @samp{ref} or @samp{refrange}} of the @code{\ref} macro are active for cross-reference display. This works also for labels defined in an external document when the current document refers to them through the @code{xr} interface (@pxref{LaTeX xr Package}). @item @code{\label} @cindex @code{\label} @vindex reftex-label-alist Display a document location which references this label. Pressing @kbd{C-c &} several times moves through the entire document and finds all locations. Not only the @code{\label} macro but also other macros with label arguments (as configured with @code{reftex-label-alist}) are active for cross-reference display. @item @code{\cite} @cindex @code{\cite} Display the corresponding @BibTeX{} database entry or @code{\bibitem}. All usual variants@footnote{all macros that either start or end with @samp{cite}} of the @code{\cite} macro are active for cross-reference display. @item @code{\bibitem} @cindex @code{\bibitem} Display a document location which cites this article. Pressing @kbd{C-c &} several times moves through the entire document and finds all locations. @item @BibTeX{} @cindex BibTeX buffer, viewing cite locations from @cindex Viewing cite locations from BibTeX buffer @kbd{C-c &} is also active in @BibTeX{} buffers. All locations in a document where the database entry at point is cited will be displayed. On first use, @RefTeX{} will prompt for a buffer which belongs to the document you want to search. Subsequent calls will use the same document, until you break this link with a prefix argument to @kbd{C-c &}. @item @code{\index} @cindex @code{\index} Display other locations in the document which are marked by an index macro with the same key argument. Along with the standard @code{\index} and @code{\glossary} macros, all macros configured in @code{reftex-index-macros} will be recognized. @end table @vindex reftex-view-crossref-extra While the display of cross referencing information for the above mentioned macros is hard-coded, you can configure additional relations in the variable @code{reftex-view-crossref-extra}. @iftex @chapter All the Rest @end iftex @ifnottex @raisesections @end ifnottex @node RefTeXs Menu @section @RefTeX{}'s Menu @cindex RefTeXs Menu @cindex Menu, in the menu bar @RefTeX{} installs a @code{Ref} menu in the menu bar on systems which support this. From this menu you can access all of @RefTeX{}'s commands and a few of its options. There is also a @code{Customize} submenu which can be used to access @RefTeX{}'s entire set of options. @node Key Bindings @section Default Key Bindings @cindex Key Bindings, summary Here is a summary of the available key bindings. @kindex C-c = @kindex C-c - @kindex C-c ( @kindex C-c ) @kindex C-c [ @kindex C-c & @kindex S-mouse-2 @kindex C-c / @kindex C-c \ @kindex C-c | @kindex C-c < @kindex C-c > @example @kbd{C-c =} @code{reftex-toc} @kbd{C-c -} @code{reftex-toc-recenter} @kbd{C-c (} @code{reftex-label} @kbd{C-c )} @code{reftex-reference} @kbd{C-c [} @code{reftex-citation} @kbd{C-c &} @code{reftex-view-crossref} @kbd{S-mouse-2} @code{reftex-mouse-view-crossref} @kbd{C-c /} @code{reftex-index-selection-or-word} @kbd{C-c \} @code{reftex-index-phrase-selection-or-word} @kbd{C-c |} @code{reftex-index-visit-phrases-buffer} @kbd{C-c <} @code{reftex-index} @kbd{C-c >} @code{reftex-display-index} @end example Note that the @kbd{S-mouse-2} binding is only provided if this key is not already used by some other package. @RefTeX{} will not override an existing binding to @kbd{S-mouse-2}. Personally, I also bind some functions in the users @kbd{C-c} map for easier access. @c FIXME: Do we need bindings for the Index macros here as well? @c C-c i C-c I or so???? @c How about key bindings for reftex-reset-mode and reftex-parse-document? @kindex C-c t @kindex C-c l @kindex C-c r @kindex C-c c @kindex C-c v @kindex C-c s @kindex C-c g @example @kbd{C-c t} @code{reftex-toc} @kbd{C-c l} @code{reftex-label} @kbd{C-c r} @code{reftex-reference} @kbd{C-c c} @code{reftex-citation} @kbd{C-c v} @code{reftex-view-crossref} @kbd{C-c s} @code{reftex-search-document} @kbd{C-c g} @code{reftex-grep-document} @end example @noindent These keys are reserved for the user, so I cannot bind them by default. If you want to have these key bindings available, set in your @file{.emacs} file: @vindex reftex-extra-bindings @lisp (setq reftex-extra-bindings t) @end lisp Note that this variable has to be set before @RefTeX{} is loaded to have an effect. @vindex reftex-load-hook Changing and adding to @RefTeX{}'s key bindings is best done in the hook @code{reftex-load-hook}. For information on the keymaps which should be used to add keys, see @ref{Keymaps and Hooks}. @node Faces @section Faces @cindex Faces @RefTeX{} uses faces when available to structure the selection and table of contents buffers. It does not create its own faces, but uses the ones defined in @file{font-lock.el}. Therefore, @RefTeX{} will use faces only when @code{font-lock} is loaded. This seems to be reasonable because people who like faces will very likely have it loaded. If you wish to turn off fontification or change the involved faces, see @ref{Options - Fontification}. @node Multifile Documents @section Multifile Documents @cindex Multifile documents @cindex Documents, spread over files The following is relevant when working with documents spread over many files: @itemize @bullet @item @RefTeX{} has full support for multifile documents. You can edit parts of several (multifile) documents at the same time without conflicts. @RefTeX{} provides functions to run @code{grep}, @code{search} and @code{query-replace} on all files which are part of a multifile document. @item @vindex tex-main-file @vindex TeX-master All files belonging to a multifile document should define a File Variable (@code{TeX-master} for @AUCTeX{} or @code{tex-main-file} for the standard Emacs @LaTeX{} mode) containing the name of the master file. For example, to set the file variable @code{TeX-master}, include something like the following at the end of each @TeX{} file: @example %%% Local Variables: *** %%% mode:latex *** %%% TeX-master: "thesis.tex" *** %%% End: *** @end example @AUCTeX{} with the setting @lisp (setq-default TeX-master nil) @end lisp will actually ask you for each new file about the master file and insert this comment automatically. For more details see the documentation of the @AUCTeX{} (@pxref{Multifile,,,auctex, The AUCTeX User Manual}), the documentation about the Emacs (La)TeX mode (@pxref{TeX Print,,,emacs, The GNU Emacs Manual}) and the Emacs documentation on File Variables (@pxref{File Variables,,,emacs, The GNU Emacs Manual}). @item The context of a label definition must be found in the same file as the label itself in order to be processed correctly by @RefTeX{}. The only exception is that section labels referring to a section statement outside the current file can still use that section title as context. @item @vindex reftex-include-file-commands @RefTeX{} knows about the @code{\include} and @code{\input} macros. In case you use different commands to include files in a multifile document, customize the variable @code{reftex-include-file-commands}. @end itemize @node Language Support @section Language Support @cindex Language support Some parts of @RefTeX{} are language dependent. The default settings work well for English. If you are writing in a different language, the following hints may be useful: @itemize @bullet @item @vindex reftex-derive-label-parameters @vindex reftex-abbrev-parameters The mechanism to derive a label from context includes the abbreviation of words and omission of unimportant words. These mechanisms may have to be changed for other languages. See the variables @code{reftex-derive-label-parameters} and @code{reftex-abbrev-parameters}. @item @vindex reftex-translate-to-ascii-function @vindex reftex-label-illegal-re Also, when a label is derived from context, @RefTeX{} clears the context string from non-ASCII characters in order to make a valid label. If there should ever be a version of @TeX{} which allows extended characters @emph{in labels}, then we will have to look at the variables @code{reftex-translate-to-ascii-function} and @code{reftex-label-illegal-re}. @item When a label is referenced, @RefTeX{} looks at the word before point to guess which label type is required. These @emph{magic words} are different in every language. For an example of how to add magic words, see @ref{Adding Magic Words}. @vindex reftex-multiref-punctuation @vindex reftex-cite-punctuation @item @RefTeX{} inserts ``punctuation'' for multiple references and for the author list in citations. Some of this may be language dependent. See the variables @code{reftex-multiref-punctuation} and @code{reftex-cite-punctuation}. @end itemize @node Finding Files @section Finding Files @cindex Finding files In order to find files included in a document via @code{\input} or @code{\include}, @RefTeX{} searches all directories specified in the environment variable @code{TEXINPUTS}. Similarly, it will search the path specified in the variables @code{BIBINPUTS} and @code{TEXBIB} for @BibTeX{} database files. When searching, @RefTeX{} will also expand recursive path definitions (directories ending in @samp{//} or @samp{!!}). But it will only search and expand directories @emph{explicitly} given in these variables. This may cause problems under the following circumstances: @itemize @bullet @item Most @TeX{} system have a default search path for both @TeX{} files and @BibTeX{} files which is defined in some setup file. Usually this default path is for system files which @RefTeX{} does not need to see. But if your document needs @TeX{} files or @BibTeX{} database files in a directory only given in the default search path, @RefTeX{} will fail to find them. @item Some @TeX{} systems do not use environment variables at all in order to specify the search path. Both default and user search path are then defined in setup files. @end itemize @noindent There are three ways to solve this problem: @itemize @bullet @item Specify all relevant directories explicitly in the environment variables. If for some reason you don't want to mess with the default variables @code{TEXINPUTS} and @code{BIBINPUTS}, define your own variables and configure @RefTeX{} to use them instead: @lisp (setq reftex-texpath-environment-variables '("MYTEXINPUTS")) (setq reftex-bibpath-environment-variables '("MYBIBINPUTS")) @end lisp @item Specify the full search path directly in @RefTeX{}'s variables. @lisp (setq reftex-texpath-environment-variables '("./inp:/home/cd/tex//:/usr/local/tex//")) (setq reftex-bibpath-environment-variables '("/home/cd/tex/lit/")) @end lisp @item Some @TeX{} systems provide stand-alone programs to do the file search just like @TeX{} and @BibTeX{}. E.g., Thomas Esser's @code{teTeX} uses the @code{kpathsearch} library which provides the command @code{kpsewhich} to search for files. @RefTeX{} can be configured to use this program. Note that the exact syntax of the @code{kpsewhich} command depends upon the version of that program. @lisp (setq reftex-use-external-file-finders t) (setq reftex-external-file-finders '(("tex" . "kpsewhich -format=.tex %f") ("bib" . "kpsewhich -format=.bib %f"))) @end lisp @end itemize @cindex Noweb files @vindex reftex-file-extensions @vindex TeX-file-extensions Some people like to use RefTeX with noweb files, which usually have the extension @file{.nw}. In order to deal with such files, the new extension must be added to the list of valid extensions in the variable @code{reftex-file-extensions}. When working with @AUCTeX{} as major mode, the new extension must also be known to @AUCTeX{} via the variable @code{TeX-file-extension}. For example: @lisp (setq reftex-file-extensions '(("nw" "tex" ".tex" ".ltx") ("bib" ".bib"))) (setq TeX-file-extensions '( "nw" "tex" "sty" "cls" "ltx" "texi" "texinfo")) @end lisp @node Optimizations @section Optimizations @cindex Optimizations @b{Note added 2002. Computers have gotten a lot faster, so most of the optimizations discussed below will not be necessary on new machines. I am leaving this stuff in the manual for people who want to write thick books, where some of it still might be useful.} Implementing the principle of least surprises, the default settings of @RefTeX{} ensure a safe ride for beginners and casual users. However, when using @RefTeX{} for a large project and/or on a small computer, there are ways to improve speed or memory usage. @itemize @bullet @item @b{Removing Lookup Buffers}@* @cindex Removing lookup buffers @RefTeX{} will load other parts of a multifile document as well as @BibTeX{} database files for lookup purposes. These buffers are kept, so that subsequent use of the same files is fast. If you can't afford keeping these buffers around, and if you can live with a speed penalty, try @vindex reftex-keep-temporary-buffers @lisp (setq reftex-keep-temporary-buffers nil) @end lisp @item @b{Partial Document Scans}@* @cindex Partial documents scans @cindex Document scanning, partial A @kbd{C-u} prefix on the major @RefTeX{} commands @code{reftex-label} (@kbd{C-u C-c (}), @code{reftex-reference} (@kbd{C-u C-c )}), @code{reftex-citation} (@kbd{C-u C-c [}), @code{reftex-toc} (@kbd{C-u C-c =}), and @code{reftex-view-crossref} (@kbd{C-u C-c &}) initiates re-parsing of the entire document in order to update the parsing information. For a large document this can be unnecessary, in particular if only one file has changed. @RefTeX{} can be configured to do partial scans instead of full ones. @kbd{C-u} re-parsing then does apply only to the current buffer and files included from it. Likewise, the @kbd{r} key in both the label selection buffer and the table-of-contents buffer will only prompt scanning of the file in which the label or section macro near the cursor was defined. Re-parsing of the entire document is still available by using @kbd{C-u C-u} as a prefix, or the capital @kbd{R} key in the menus. To use this feature, try @vindex reftex-enable-partial-scans @lisp (setq reftex-enable-partial-scans t) @end lisp @item @b{Saving Parser Information}@* @cindex Saving parser information @cindex Parse information, saving to a file @vindex reftex-parse-file-extension Even with partial scans enabled, @RefTeX{} still has to make one full scan, when you start working with a document. To avoid this, parsing information can be stored in a file. The file @file{MASTER.rel} is used for storing information about a document with master file @file{MASTER.tex}. It is written automatically when you kill a buffer in @code{reftex-mode} or when you exit Emacs. The information is restored when you begin working with a document in a new editing session. To use this feature, put into @file{.emacs}: @vindex reftex-save-parse-info @lisp (setq reftex-save-parse-info t) @end lisp @item @b{Identifying label types by prefix}@* @cindex Parse information, saving to a file @vindex reftex-trust-label-prefix @RefTeX{} normally parses around each label to check in which environment this label is located, in order to assign a label type to the label. If your document contains thousands of labels, document parsing will take considerable time. If you have been using label prefixes like tab: and fn: consistently, you can tell @RefTeX{} to get the label type directly from the prefix, without additional parsing. This will be faster and also allow labels to end up in the correct category if for some reason it is not possible to derive the correct type from context. For example, to enable this feature for footnote and equation labels, use @lisp (setq reftex-trust-label-prefix '("fn:" "eq:")) @end lisp @item @b{Automatic Document Scans}@* @cindex Automatic document scans @cindex Document scanning, automatic At rare occasions, @RefTeX{} will automatically rescan a part of the document. If this gets into your way, it can be turned off with @vindex reftex-allow-automatic-rescan @lisp (setq reftex-allow-automatic-rescan nil) @end lisp @RefTeX{} will then occasionally annotate new labels in the selection buffer, saying that their position in the label list in uncertain. A manual document scan will fix this. @item @b{Multiple Selection Buffers}@* @cindex Multiple selection buffers @cindex Selection buffers, multiple Normally, the selection buffer @file{*RefTeX Select*} is re-created for every selection process. In documents with very many labels this can take several seconds. @RefTeX{} provides an option to create a separate selection buffer for each label type and to keep this buffer from one selection to the next. These buffers are updated automatically only when a new label has been added in the buffers category with @code{reftex-label}. Updating the buffer takes as long as recreating it - so the time saving is limited to cases where no new labels of that category have been added. To turn on this feature, use @vindex reftex-use-multiple-selection-buffers @lisp (setq reftex-use-multiple-selection-buffers t) @end lisp @noindent @cindex Selection buffers, updating You can also inhibit the automatic updating entirely. Then the selection buffer will always pop up very fast, but may not contain the most recently defined labels. You can always update the buffer by hand, with the @kbd{g} key. To get this behavior, use instead @vindex reftex-auto-update-selection-buffers @lisp (setq reftex-use-multiple-selection-buffers t reftex-auto-update-selection-buffers nil) @end lisp @end itemize @need 2000 @noindent @b{As a summary}, here are the settings I recommend for heavy use of @RefTeX{} with large documents: @lisp @group (setq reftex-enable-partial-scans t reftex-save-parse-info t reftex-use-multiple-selection-buffers t) @end group @end lisp @node AUCTeX @section @AUCTeX{} @cindex @code{AUCTeX}, Emacs package @cindex Emacs packages, @code{AUCTeX} @AUCTeX{} is without doubt the best major mode for editing @TeX{} and @LaTeX{} files with Emacs (@pxref{Top,AUCTeX,,auctex, The AUCTeX User Manual}). If @AUCTeX{} is not part of your Emacs distribution, you can get it@footnote{XEmacs 21.x users may want to install the corresponding XEmacs package.} by FTP from the @value{AUCTEXSITE}. @menu * AUCTeX-RefTeX Interface:: How both packages work together * Style Files:: @AUCTeX{}'s style files can support RefTeX * Bib-Cite:: Hypertext reading of a document @end menu @node AUCTeX-RefTeX Interface @subsection The @AUCTeX{}-@RefTeX{} Interface @RefTeX{} contains code to interface with @AUCTeX{}. When this interface is turned on, both packages will interact closely. Instead of using @RefTeX{}'s commands directly, you can then also use them indirectly as part of the @AUCTeX{} environment@footnote{@RefTeX{} 4.0 and @AUCTeX{} 9.10c will be needed for all of this to work. Parts of it work also with earlier versions.}. The interface is turned on with @lisp (setq reftex-plug-into-AUCTeX t) @end lisp If you need finer control about which parts of the interface are used and which not, read the docstring of the variable @code{reftex-plug-into-AUCTeX} or customize it with @kbd{M-x customize-variable @key{RET} reftex-plug-into-AUCTeX @key{RET}}. The following list describes the individual parts of the interface. @itemize @bullet @item @findex reftex-label @vindex LaTeX-label-function@r{, AUCTeX} @kindex C-c C-e @kindex C-c C-s @findex LaTeX-section@r{, AUCTeX} @findex TeX-insert-macro@r{, AUCTeX} @b{@AUCTeX{} calls @code{reftex-label} to insert labels}@* When a new section is created with @kbd{C-c C-s}, or a new environment is inserted with @kbd{C-c C-e}, @AUCTeX{} normally prompts for a label to go with it. With the interface, @code{reftex-label} is called instead. For example, if you type @kbd{C-c C-e equation @key{RET}}, @AUCTeX{} and @RefTeX{} will insert @example \begin@{equation@} \label@{eq:1@} \end@{equation@} @end example @noindent without further prompts. Similarly, when you type @kbd{C-c C-s section @key{RET}}, @RefTeX{} will offer its default label which is derived from the section title. @item @b{@AUCTeX{} tells @RefTeX{} about new sections}@* When creating a new section with @kbd{C-c C-s}, @RefTeX{} will not have to rescan the buffer in order to see it. @item @findex reftex-arg-label @findex TeX-arg-label@r{, AUCTeX function} @findex reftex-arg-ref @findex TeX-arg-ref@r{, AUCTeX function} @findex reftex-arg-cite @findex TeX-arg-cite@r{, AUCTeX function} @findex reftex-arg-index @findex TeX-arg-index@r{, AUCTeX function} @findex TeX-insert-macro@r{, AUCTeX function} @kindex C-c RET @b{@RefTeX{} supplies macro arguments}@* When you insert a macro interactively with @kbd{C-c @key{RET}}, @AUCTeX{} normally prompts for macro arguments. Internally, it uses the functions @code{TeX-arg-label}, @code{TeX-arg-cite}, and @code{TeX-arg-index} to prompt for arguments which are labels, citation keys and index entries. The interface takes over these functions@footnote{@code{fset} is used to do this, which is not reversible. However, @RefTeX{} implements the old functionality when you later decide to turn off the interface.} and supplies the macro arguments with @b{@RefTeX{}'s} mechanisms. For example, when you type @kbd{C-c @key{RET} ref @key{RET}}, @RefTeX{} will supply its label selection process (@pxref{Referencing Labels}). @item @b{@RefTeX{} tells @AUCTeX{} about new labels, citation and index keys}@* @RefTeX{} will add all newly created labels to @AUCTeX{}'s completion list. @end itemize @node Style Files @subsection Style Files @cindex Style files, AUCTeX @findex TeX-add-style-hook@r{, AUCTeX} Style files are Emacs Lisp files which are evaluated by @AUCTeX{} in association with the @code{\documentclass} and @code{\usepackage} commands of a document (@pxref{Style Files,,,auctex}). Support for @RefTeX{} in such a style file is useful when the @LaTeX{} style defines macros or environments connected with labels, citations, or the index. Many style files (e.g., @file{amsmath.el} or @file{natbib.el}) distributed with @AUCTeX{} already support @RefTeX{} in this way. Before calling a @RefTeX{} function, the style hook should always test for the availability of the function, so that the style file will also work for people who do not use @RefTeX{}. Additions made with style files in the way described below remain local to the current document. For example, if one package uses AMSTeX, the style file will make @RefTeX{} switch over to @code{\eqref}, but this will not affect other documents. @findex reftex-add-label-environments @findex reftex-add-to-label-alist A style hook may contain calls to @code{reftex-add-label-environments}@footnote{This used to be the function @code{reftex-add-to-label-alist} which is still available as an alias for compatibility.} which defines additions to @code{reftex-label-alist}. The argument taken by this function must have the same format as @code{reftex-label-alist}. The @file{amsmath.el} style file of @AUCTeX{} for example contains the following: @lisp @group (TeX-add-style-hook "amsmath" (lambda () (if (fboundp 'reftex-add-label-environments) (reftex-add-label-environments '(AMSTeX))))) @end group @end lisp @noindent @findex LaTeX-add-environments@r{, AUCTeX} while a package @code{myprop} defining a @code{proposition} environment with @code{\newtheorem} might use @lisp @group (TeX-add-style-hook "myprop" (lambda () (LaTeX-add-environments '("proposition" LaTeX-env-label)) (if (fboundp 'reftex-add-label-environments) (reftex-add-label-environments '(("proposition" ?p "prop:" "~\\ref@{%s@}" t ("Proposition" "Prop.") -3)))))) @end group @end lisp @findex reftex-set-cite-format Similarly, a style hook may contain a call to @code{reftex-set-cite-format} to set the citation format. The style file @file{natbib.el} for the Natbib citation style does switch @RefTeX{}'s citation format like this: @lisp (TeX-add-style-hook "natbib" (lambda () (if (fboundp 'reftex-set-cite-format) (reftex-set-cite-format 'natbib)))) @end lisp @findex reftex-add-index-macros The hook may contain a call to @code{reftex-add-index-macros} to define additional @code{\index}-like macros. The argument must have the same format as @code{reftex-index-macros}. It may be a symbol, to trigger support for one of the builtin index packages. For example, the style @file{multind.el} contains @lisp (TeX-add-style-hook "multind" (lambda () (and (fboundp 'reftex-add-index-macros) (reftex-add-index-macros '(multind))))) @end lisp If you have your own package @file{myindex} which defines the following macros to be used with the @LaTeX{} @file{index.sty} file @example \newcommand@{\molec@}[1]@{#1\index@{Molecules!#1@}@} \newcommand@{\aindex@}[1]@{#1\index[author]@{#1@} @end example you could write this in the style file @file{myindex.el}: @lisp (TeX-add-style-hook "myindex" (lambda () (TeX-add-symbols '("molec" TeX-arg-index) '("aindex" TeX-arg-index)) (if (fboundp 'reftex-add-index-macros) (reftex-add-index-macros '(("molec@{*@}" "idx" ?m "Molecules!" nil nil) ("aindex@{*@}" "author" ?a "" nil nil)))))) @end lisp @findex reftex-add-section-levels Finally the hook may contain a call to @code{reftex-add-section-levels} to define additional section statements. For example, the FoilTeX class has just two headers, @code{\foilhead} and @code{\rotatefoilhead}. Here is a style file @file{foils.el} that will inform @RefTeX{} about these: @lisp (TeX-add-style-hook "foils" (lambda () (if (fboundp 'reftex-add-section-levels) (reftex-add-section-levels '(("foilhead" . 3) ("rotatefoilhead" . 3)))))) @end lisp @node Bib-Cite @subsection Bib-Cite @cindex @code{bib-cite}, Emacs package @cindex Emacs packages, @code{bib-cite} Once you have written a document with labels, references and citations, it can be nice to read it like a hypertext document. @RefTeX{} has support for that: @code{reftex-view-crossref} (bound to @kbd{C-c &}), @code{reftex-mouse-view-crossref} (bound to @kbd{S-mouse-2}), and @code{reftex-search-document}. A somewhat fancier interface with mouse highlighting is provided (among other things) by Peter S. Galbraith's @file{bib-cite.el}. There is some overlap in the functionalities of Bib-cite and @RefTeX{}. Bib-cite.el comes bundled with @AUCTeX{}. Bib-cite version 3.06 and later can be configured so that bib-cite's mouse functions use @RefTeX{} for displaying references and citations. This can be useful in particular when working with the @LaTeX{} @code{xr} package or with an explicit @code{thebibliography} environment (rather than @BibTeX{}). Bib-cite cannot handle those, but @RefTeX{} does. To make use of this feature, try @vindex bib-cite-use-reftex-view-crossref @lisp (setq bib-cite-use-reftex-view-crossref t) @end lisp @page @node Problems and Work-Arounds @section Problems and Work-arounds @cindex Problems and work-arounds @itemize @bullet @item @b{@LaTeX{} commands}@* @cindex LaTeX commands, not found @code{\input}, @code{\include}, and @code{\section} (etc.)@: statements have to be first on a line (except for white space). @item @b{Commented regions}@* @cindex Labels, commented out @RefTeX{} sees also labels in regions commented out and will refuse to make duplicates of such labels. This is considered to be a feature. @item @b{Wrong section numbers}@* @cindex Section numbers, wrong @vindex reftex-enable-partial-scans When using partial scans (@code{reftex-enable-partial-scans}), the section numbers in the table of contents may eventually become wrong. A full scan will fix this. @item @b{Local settings}@* @cindex Settings, local @findex reftex-add-label-environments @findex reftex-set-cite-format @findex reftex-add-section-levels The label environment definitions in @code{reftex-label-alist} are global and apply to all documents. If you need to make definitions local to a document, because they would interfere with settings in other documents, you should use @AUCTeX{} and set up style files with calls to @code{reftex-add-label-environments}, @code{reftex-set-cite-format}, @code{reftex-add-index-macros}, and @code{reftex-add-section-levels}. Settings made with these functions remain local to the current document. @xref{AUCTeX}. @item @b{Funny display in selection buffer}@* @cindex @code{x-symbol}, Emacs package @cindex Emacs packages, @code{x-symbol} @cindex @code{isotex}, Emacs package @cindex Emacs packages, @code{isotex} @cindex @code{iso-cvt}, Emacs package @cindex Emacs packages, @code{iso-cvt} When using packages which make the buffer representation of a file different from its disk representation (e.g., x-symbol, isotex, iso-cvt) you may find that @RefTeX{}'s parsing information sometimes reflects the disk state of a file. This happens only in @emph{unvisited} parts of a multifile document, because @RefTeX{} visits these files literally for speed reasons. Then both short context and section headings may look different from what you usually see on your screen. In rare cases @code{reftex-toc} may have problems to jump to an affected section heading. There are three possible ways to deal with this: @itemize @minus @item @vindex reftex-keep-temporary-buffers @code{(setq reftex-keep-temporary-buffers t)}@* This implies that @RefTeX{} will load all parts of a multifile document into Emacs (i.e., there won't be any temporary buffers). @item @vindex reftex-initialize-temporary-buffers @code{(setq reftex-initialize-temporary-buffers t)}@* This means full initialization of temporary buffers. It involves a penalty when the same unvisited file is used for lookup often. @item Set @code{reftex-initialize-temporary-buffers} to a list of hook functions doing a minimal initialization. @end itemize @vindex reftex-refontify-context See also the variable @code{reftex-refontify-context}. @item @b{Labels as arguments to \begin}@* @cindex @code{pf}, LaTeX package @cindex LaTeX packages, @code{pf} Some packages use an additional argument to a @code{\begin} macro to specify a label. E.g., Lamport's @file{pf.sty} uses both @example \step@{@var{label}@}@{@var{claim}@} and \begin@{step+@}@{@var{label}@} @var{claim} \end@{step+@} @end example @noindent We need to trick @RefTeX{} into swallowing this: @lisp @group ;; Configuration for Lamport's pf.sty (setq reftex-label-alist '(("\\step@{*@}@{@}" ?p "st:" "~\\stepref@{%s@}" 2 ("Step" "St.")) ("\\begin@{step+@}@{*@}" ?p "st:" "~\\stepref@{%s@}" 1000))) @end group @end lisp @noindent The first line is just a normal configuration for a macro. For the @code{step+} environment we actually tell @RefTeX{} to look for the @emph{macro} @samp{\begin@{step+@}} and interpret the @emph{first} argument (which really is a second argument to the macro @code{\begin}) as a label of type @code{?p}. Argument count for this macro starts only after the @samp{@{step+@}}, also when specifying how to get context. @item @b{Idle timers in XEmacs}@* @cindex Idle timer restart @vindex reftex-use-itimer-in-xemacs In XEmacs, idle timer restart does not work reliably after fast keystrokes. Therefore @RefTeX{} currently uses the post command hook to start the timer used for automatic crossref information. When this bug gets fixed, a real idle timer can be requested with @lisp (setq reftex-use-itimer-in-xemacs t) @end lisp @item @b{Viper mode}@* @cindex Viper mode @cindex Key bindings, problems with Viper mode @findex viper-harness-minor-mode With @i{Viper} mode prior to Vipers version 3.01, you need to protect @RefTeX{}'s keymaps with @lisp (viper-harness-minor-mode "reftex") @end lisp @end itemize @page @node Imprint @section Imprint @cindex Imprint @cindex Maintainer @cindex Acknowledgments @cindex Thanks @cindex Bug reports @cindex @code{http}, @RefTeX{} home page @cindex @code{ftp}, @RefTeX{} site @c dominik@@science.uva.nl @RefTeX{} was written by @i{Carsten Dominik}, with contributions by @i{Stephen Eglen}. @RefTeX{} is currently maintained by @value{MAINTAINER}, see the @value{MAINTAINERSITE} for detailed information. If you have questions about @RefTeX{}, you can send email to the @value{SUPPORTADDRESS}. If you want to contribute code or ideas, write to the @value{DEVELADDRESS}. And in the rare case of finding a bug, please use @kbd{M-x reftex-report-bug @key{RET}} which will prepare a bug report with useful information about your setup. Remember to add essential information like a recipe for reproducing the bug, what you expected to happen, and what actually happened. Send the bug report to the @value{BUGADDRESS}. There are also several Usenet groups which have competent readers who might be able to help: @code{comp.emacs}, @code{gnu.emacs.help}, @code{comp.emacs.xemacs}, and @code{comp.text.tex}. Thanks to the people on the Net who have used @RefTeX{} and helped developing it with their reports. In particular thanks to @i{Ralf Angeli, Fran Burstall, Alastair Burt, Lars Clausen, Soren Dayton, Stephen Eglen, Karl Eichwalder, Erik Frisk, Peter Galbraith, Kai Grossjohann, Frank Harrell, Till A. Heilmann, Peter Heslin, Stephan Heuel, Alan Ho, Lute Kamstra, Dieter Kraft, David Kastrup, Adrian Lanz, Juri Linkov, Wolfgang Mayer, Rory Molinari, Stefan Monnier, Laurent Mugnier, Dan Nicolaescu, Sudeep Kumar Palat, Daniel Polani, Alan Shutko, Robin Socha, Richard Stanton, Allan Strand, Jan Vroonhof, Christoph Wedler, Alan Williams, Roland Winkler, Hans-Christoph Wirth, Eli Zaretskii}. The @code{view-crossref} feature was inspired by @i{Peter Galbraith's} @file{bib-cite.el}. Finally thanks to @i{Uwe Bolick} who first got me interested in supporting @LaTeX{} labels and references with an editor (which was MicroEmacs at the time). @c Turn off the raising that we turned on in ``All the rest''. @ifnottex @lowersections @end ifnottex @node Commands @chapter Commands @cindex Commands, list of Here is a summary of @RefTeX{}'s commands which can be executed from @LaTeX{} files. Command which are executed from the special buffers are not described here. All commands are available from the @code{Ref} menu. @xref{Key Bindings}. @deffn Command reftex-toc Show the table of contents for the current document. When called with one ore two @kbd{C-u} prefixes, rescan the document first. @end deffn @deffn Command reftex-label Insert a unique label. With one or two @kbd{C-u} prefixes, enforce document rescan first. @end deffn @deffn Command reftex-reference Start a selection process to select a label, and insert a reference to it. With one or two @kbd{C-u} prefixes, enforce document rescan first. @end deffn @deffn Command reftex-citation Make a citation using @BibTeX{} database files. After prompting for a regular expression, scans the buffers with @BibTeX{} entries (taken from the @code{\bibliography} command or a @code{thebibliography} environment) and offers the matching entries for selection. The selected entry is formatted according to @code{reftex-cite-format} and inserted into the buffer. @* When called with a @kbd{C-u} prefix, prompt for optional arguments in cite macros. When called with a numeric prefix, make that many citations. When called with point inside the braces of a @code{\cite} command, it will add another key, ignoring the value of @code{reftex-cite-format}. @* The regular expression uses an expanded syntax: @samp{&&} is interpreted as @code{and}. Thus, @samp{aaaa&&bbb} matches entries which contain both @samp{aaaa} and @samp{bbb}. While entering the regexp, completion on knows citation keys is possible. @samp{=} is a good regular expression to match all entries in all files. @end deffn @deffn Command reftex-index Query for an index macro and insert it along with its arguments. The index macros available are those defined in @code{reftex-index-macro} or by a call to @code{reftex-add-index-macros}, typically from an @AUCTeX{} style file. @RefTeX{} provides completion for the index tag and the index key, and will prompt for other arguments. @end deffn @deffn Command reftex-index-selection-or-word Put current selection or the word near point into the default index macro. This uses the information in @code{reftex-index-default-macro} to make an index entry. The phrase indexed is the current selection or the word near point. When called with one @kbd{C-u} prefix, let the user have a chance to edit the index entry. When called with 2 @kbd{C-u} as prefix, also ask for the index macro and other stuff. When called inside @TeX{} math mode as determined by the @file{texmathp.el} library which is part of @AUCTeX{}, the string is first processed with the @code{reftex-index-math-format}, which see. @end deffn @deffn Command reftex-index-phrase-selection-or-word Add current selection or the word at point to the phrases buffer. When you are in transient-mark-mode and the region is active, the selection will be used; otherwise the word at point. You get a chance to edit the entry in the phrases buffer; to save the buffer and return to the @LaTeX{} document, finish with @kbd{C-c C-c}. @end deffn @deffn Command reftex-index-visit-phrases-buffer Switch to the phrases buffer, initialize if empty. @end deffn @deffn Command reftex-index-phrases-apply-to-region Index all index phrases in the current region. This works exactly like global indexing from the index phrases buffer, but operation is restricted to the current region. @end deffn @deffn Command reftex-display-index Display a buffer with an index compiled from the current document. When the document has multiple indices, first prompts for the correct one. When index support is turned off, offer to turn it on. With one or two @kbd{C-u} prefixes, rescan document first. With prefix 2, restrict index to current document section. With prefix 3, restrict index to active region. @end deffn @deffn Command reftex-view-crossref View cross reference of macro at point. Point must be on the @var{key} argument. Works with the macros @code{\label}, @code{\ref}, @code{\cite}, @code{\bibitem}, @code{\index} and many derivatives of these. Where it makes sense, subsequent calls show additional locations. See also the variable @code{reftex-view-crossref-extra} and the command @code{reftex-view-crossref-from-bibtex}. With one or two @kbd{C-u} prefixes, enforce rescanning of the document. With argument 2, select the window showing the cross reference. @end deffn @deffn Command reftex-view-crossref-from-bibtex View location in a @LaTeX{} document which cites the @BibTeX{} entry at point. Since @BibTeX{} files can be used by many @LaTeX{} documents, this function prompts upon first use for a buffer in @RefTeX{} mode. To reset this link to a document, call the function with a prefix arg. Calling this function several times find successive citation locations. @end deffn @deffn Command reftex-create-tags-file Create TAGS file by running @code{etags} on the current document. The TAGS file is also immediately visited with @code{visit-tags-table}. @end deffn @deffn Command reftex-grep-document Run grep query through all files related to this document. With prefix arg, force to rescan document. No active TAGS table is required. @end deffn @deffn Command reftex-search-document Regexp search through all files of the current document. Starts always in the master file. Stops when a match is found. No active TAGS table is required. @end deffn @deffn Command reftex-query-replace-document Run a query-replace-regexp of @var{from} with @var{to} over the entire document. With prefix arg, replace only word-delimited matches. No active TAGS table is required. @end deffn @deffn Command reftex-isearch-minor-mode Toggle a minor mode which enables incremental search to work globally on the entire multifile document. Files will be searched in the sequence they appear in the document. @end deffn @deffn Command reftex-goto-label Prompt for a label (with completion) and jump to the location of this label. Optional prefix argument @var{other-window} goes to the label in another window. @end deffn @deffn Command reftex-change-label Query replace @var{from} with @var{to} in all @code{\label} and @code{\ref} commands. Works on the entire multifile document. No active TAGS table is required. @end deffn @deffn Command reftex-renumber-simple-labels Renumber all simple labels in the document to make them sequentially. Simple labels are the ones created by RefTeX, consisting only of the prefix and a number. After the command completes, all these labels will have sequential numbers throughout the document. Any references to the labels will be changed as well. For this, @RefTeX{} looks at the arguments of any macros which either start or end with the string @samp{ref}. This command should be used with care, in particular in multifile documents. You should not use it if another document refers to this one with the @code{xr} package. @end deffn @deffn Command reftex-find-duplicate-labels Produce a list of all duplicate labels in the document. @end deffn @deffn Command reftex-create-bibtex-file @vindex reftex-create-bibtex-header @vindex reftex-create-bibtex-footer Create a new @BibTeX{} database file with all entries referenced in document. The command prompts for a filename and writes the collected entries to that file. Only entries referenced in the current document with any @code{\cite}-like macros are used. The sequence in the new file is the same as it was in the old database. Entries referenced from other entries must appear after all referencing entries. You can define strings to be used as header or footer for the created files in the variables @code{reftex-create-bibtex-header} or @code{reftex-create-bibtex-footer} respectively. @end deffn @deffn Command reftex-customize Run the customize browser on the @RefTeX{} group. @end deffn @deffn Command reftex-show-commentary Show the commentary section from @file{reftex.el}. @end deffn @deffn Command reftex-info Run info on the top @RefTeX{} node. @end deffn @deffn Command reftex-parse-document Parse the entire document in order to update the parsing information. @end deffn @deffn Command reftex-reset-mode Enforce rebuilding of several internal lists and variables. Also removes the parse file associated with the current document. @end deffn @node Options @chapter Options, Keymaps, Hooks @cindex Options, list of Here is a complete list of @RefTeX{}'s configuration variables. All variables have customize support, so if you are not familiar with Emacs Lisp (and even if you are) you might find it more comfortable to use @code{customize} to look at and change these variables. @kbd{M-x reftex-customize} will get you there. In case you don't use the @code{customize} interface, here's a caveat: Changing (mostly parsing-related) options might require a call to @code{reftex-compile-variables} in order to become effective. @menu * Options - Table of Contents:: * Options - Defining Label Environments:: * Options - Creating Labels:: * Options - Referencing Labels:: * Options - Creating Citations:: * Options - Index Support:: * Options - Viewing Cross-References:: * Options - Finding Files:: * Options - Optimizations:: * Options - Fontification:: * Options - Misc:: * Keymaps and Hooks:: @end menu @node Options - Table of Contents @section Table of Contents @cindex Options, table of contents @cindex Table of contents, options @defopt reftex-include-file-commands List of @LaTeX{} commands which input another file. The file name is expected after the command, either in braces or separated by whitespace. @end defopt @defopt reftex-max-section-depth Maximum depth of section levels in document structure. Standard @LaTeX{} needs 7, default is 12. @end defopt @defopt reftex-section-levels Commands and levels used for defining sections in the document. The @code{car} of each cons cell is the name of the section macro. The @code{cdr} is a number indicating its level. A negative level means the same as the positive value, but the section will never get a number. The @code{cdr} may also be a function which then has to return the level. This list is also used for promotion and demotion of sectioning commands. If you are using a document class which has several sets of sectioning commands, promotion only works correctly if this list is sorted first by set, then within each set by level. The promotion commands always select the nearest entry with the correct new level. @end defopt @defopt reftex-toc-max-level The maximum level of toc entries which will be included in the TOC@. Section headings with a bigger level will be ignored. In RefTeX, chapters are level 1, sections level 2 etc. This variable can be changed from within the @file{*toc*} buffer with the @kbd{t} key. @end defopt @defopt reftex-part-resets-chapter Non-@code{nil} means, @code{\part} is like any other sectioning command. This means, part numbers will be included in the numbering of chapters, and chapter counters will be reset for each part. When @code{nil} (the default), parts are special, do not reset the chapter counter and also do not show up in chapter numbers. @end defopt @defopt reftex-auto-recenter-toc Non-@code{nil} means, turn automatic recentering of @file{*TOC*} window on. When active, the @file{*TOC*} window will always show the section you are currently working in. Recentering happens whenever Emacs is idle for more than @code{reftex-idle-time} seconds. Value @code{t} means, turn on immediately when RefTeX gets started. Then, recentering will work for any toc window created during the session. Value @code{frame} (the default) means, turn automatic recentering on only while the dedicated TOC frame does exist, and do the recentering only in that frame. So when creating that frame (with @kbd{d} key in an ordinary TOC window), the automatic recentering is turned on. When the frame gets destroyed, automatic recentering is turned off again. This feature can be turned on and off from the menu (Ref->Options). @end defopt @defopt reftex-toc-split-windows-horizontally Non-@code{nil} means, create TOC window by splitting window horizontally. The default is to split vertically. @end defopt @defopt reftex-toc-split-windows-fraction Fraction of the width or height of the frame to be used for TOC window. @end defopt @defopt reftex-toc-keep-other-windows Non-@code{nil} means, split the selected window to display the @file{*toc*} buffer. This helps to keep the window configuration, but makes the @file{*toc*} small. When @code{nil}, all other windows except the selected one will be deleted, so that the @file{*toc*} window fills half the frame. @end defopt @defopt reftex-toc-include-file-boundaries Non-@code{nil} means, include file boundaries in @file{*toc*} buffer. This flag can be toggled from within the @file{*toc*} buffer with the @kbd{i} key. @end defopt @defopt reftex-toc-include-labels Non-@code{nil} means, include labels in @file{*toc*} buffer. This flag can be toggled from within the @file{*toc*} buffer with the @kbd{l} key. @end defopt @defopt reftex-toc-include-index-entries Non-@code{nil} means, include index entries in @file{*toc*} buffer. This flag can be toggled from within the @file{*toc*} buffer with the @kbd{i} key. @end defopt @defopt reftex-toc-include-context Non-@code{nil} means, include context with labels in the @file{*toc*} buffer. Context will only be shown if the labels are visible as well. This flag can be toggled from within the @file{*toc*} buffer with the @kbd{c} key. @end defopt @defopt reftex-toc-follow-mode Non-@code{nil} means, point in @file{*toc*} buffer (the table-of-contents buffer) will cause other window to follow. The other window will show the corresponding part of the document. This flag can be toggled from within the @file{*toc*} buffer with the @kbd{f} key. @end defopt @deffn {Normal Hook} reftex-toc-mode-hook Normal hook which is run when a @file{*toc*} buffer is created. @end deffn @deffn Keymap reftex-toc-map The keymap which is active in the @file{*toc*} buffer. (@pxref{Table of Contents}). @end deffn @node Options - Defining Label Environments @section Defining Label Environments @cindex Options, defining label environments @cindex Defining label environments, options @defopt reftex-default-label-alist-entries Default label alist specifications. It is a list of symbols with associations in the constant @code{reftex-label-alist-builtin}. @code{LaTeX} should always be the last entry. @end defopt @defopt reftex-label-alist Set this variable to define additions and changes to the defaults in @code{reftex-default-label-alist-entries}. The only things you @emph{must not} change is that @code{?s} is the type indicator for section labels, and @key{SPC} for the @code{any} label type. These are hard-coded at other places in the code. The value of the variable must be a list of items. Each item is a list itself and has the following structure: @example (@var{env-or-macro} @var{type-key} @var{label-prefix} @var{reference-format} @var{context-method} (@var{magic-word} ... ) @var{toc-level}) @end example Each list entry describes either an environment carrying a counter for use with @code{\label} and @code{\ref}, or a @LaTeX{} macro defining a label as (or inside) one of its arguments. The elements of each list entry are: @table @asis @item @var{env-or-macro} Name of the environment (like @samp{table}) or macro (like @samp{\myfig}). For macros, indicate the arguments, as in @samp{\myfig[]@{@}@{@}@{*@}@{@}}. Use square brackets for optional arguments, a star to mark the label argument, if any. The macro does not have to have a label argument; you could also use @samp{\label@{...@}} inside one of its arguments. Special names: @code{section} for section labels, @code{any} to define a group which contains all labels. This may also be a function to do local parsing and identify point to be in a non-standard label environment. The function must take an argument @var{bound} and limit backward searches to this value. It should return either @code{nil} or a cons cell @code{(@var{function} . @var{position})} with the function symbol and the position where the special environment starts. See the Info documentation for an example. Finally this may also be @code{nil} if the entry is only meant to change some settings associated with the type indicator character (see below). @item @var{type-key} Type indicator character, like @code{?t}, must be a printable ASCII character. The type indicator is a single character which defines a label type. Any label inside the environment or macro is assumed to belong to this type. The same character may occur several times in this list, to cover cases in which different environments carry the same label type (like @code{equation} and @code{eqnarray}). If the type indicator is @code{nil} and the macro has a label argument @samp{@{*@}}, the macro defines neutral labels just like @code{\label}. In this case the remainder of this entry is ignored. @item @var{label-prefix} Label prefix string, like @samp{tab:}. The prefix is a short string used as the start of a label. It may be the empty string. The prefix may contain the following @samp{%} escapes: @example %f Current file name, directory and extension stripped. %F Current file name relative to master file directory. %m Master file name, directory and extension stripped. %M Directory name (without path) where master file is located. %u User login name, on systems which support this. %S A section prefix derived with variable @code{reftex-section-prefixes}. @end example @noindent Example: In a file @file{intro.tex}, @samp{eq:%f:} will become @samp{eq:intro:}. @item @var{reference-format} Format string for reference insertion in buffer. @samp{%s} will be replaced by the label. When the format starts with @samp{~}, this @samp{~} will only be inserted when the character before point is @emph{not} a whitespace. @item @var{context-method} Indication on how to find the short context. @itemize @minus @item If @code{nil}, use the text following the @samp{\label@{...@}} macro. @item If @code{t}, use @itemize @minus @item the section heading for section labels. @item text following the @samp{\begin@{...@}} statement of environments (not a good choice for environments like eqnarray or enumerate, where one has several labels in a single environment). @item text after the macro name (starting with the first arg) for macros. @end itemize @item If an integer, use the nth argument of the macro. As a special case, 1000 means to get text after the last macro argument. @item If a string, use as regexp to search @emph{backward} from the label. Context is then the text following the end of the match. E.g., setting this to @samp{\\caption[[@{]} will use the caption in a figure or table environment. @samp{\\begin@{eqnarray@}\|\\\\} works for eqnarrays. @item If any of @code{caption}, @code{item}, @code{eqnarray-like}, @code{alignat-like}, this symbol will internally be translated into an appropriate regexp (see also the variable @code{reftex-default-context-regexps}). @item If a function, call this function with the name of the environment/macro as argument. On call, point will be just after the @code{\label} macro. The function is expected to return a suitable context string. It should throw an exception (error) when failing to find context. As an example, here is a function returning the 10 chars following the label macro as context: @example (defun my-context-function (env-or-mac) (if (> (point-max) (+ 10 (point))) (buffer-substring (point) (+ 10 (point))) (error "Buffer too small"))) @end example @end itemize Label context is used in two ways by @RefTeX{}: For display in the label menu, and to derive a label string. If you want to use a different method for each of these, specify them as a dotted pair. E.g., @code{(nil . t)} uses the text after the label (@code{nil}) for display, and text from the default position (@code{t}) to derive a label string. This is actually used for section labels. @item @var{magic-word-list} List of magic words which identify a reference to be of this type. If the word before point is equal to one of these words when calling @code{reftex-reference}, the label list offered will be automatically restricted to labels of the correct type. If the first element of this word list is the symbol @code{regexp}, the strings are interpreted as regular expressions. @item @var{toc-level} The integer level at which this environment should be added to the table of contents. See also @code{reftex-section-levels}. A positive value will number the entries mixed with the sectioning commands of the same level. A negative value will make unnumbered entries. Useful only for theorem-like environments which structure the document. Will be ignored for macros. When omitted or @code{nil}, no TOC entries will be made. @end table If the type indicator characters of two or more entries are the same, @RefTeX{} will use @itemize @minus @item the first non-@code{nil} format and prefix @item the magic words of all involved entries. @end itemize Any list entry may also be a symbol. If that has an association in @code{reftex-label-alist-builtin}, the @code{cddr} of that association is spliced into the list. However, builtin defaults should normally be set with the variable @code{reftex-default-label-alist-entries}. @end defopt @defopt reftex-section-prefixes Prefixes for section labels. When the label prefix given in an entry in @code{reftex-label-alist} contains @samp{%S}, this list is used to determine the correct prefix string depending on the current section level. The list is an alist, with each entry of the form @w{@code{(@var{key} . @var{prefix})}}. Possible keys are sectioning macro names like @samp{chapter}, integer section levels (as given in @code{reftex-section-levels}), and @code{t} for the default. @end defopt @defopt reftex-default-context-regexps Alist with default regular expressions for finding context. The emacs lisp form @w{@code{(format regexp (regexp-quote environment))}} is used to calculate the final regular expression, so @samp{%s} will be replaced with the environment or macro. @end defopt @defopt reftex-trust-label-prefix Non-@code{nil} means, trust the label prefix when determining label type. It is customary to use special label prefixes to distinguish different label types. The label prefixes have no syntactic meaning in @LaTeX{} (unless special packages like fancyref) are being used. RefTeX can and by default does parse around each label to detect the correct label type, but this process can be slow when a document contains thousands of labels. If you use label prefixes consistently, you may speed up document parsing by setting this variable to a non-@code{nil} value. RefTeX will then compare the label prefix with the prefixes found in @code{reftex-label-alist} and derive the correct label type in this way. Possible values for this option are: @example t @r{This means to trust any label prefixes found.} regexp @r{If a regexp, only prefixes matched by the regexp are trusted.} list @r{List of accepted prefixes, as strings. The colon is part of} @r{the prefix, e.g., ("fn:" "eqn:" "item:").} nil @r{Never trust a label prefix.} @end example The only disadvantage of using this feature is that the label context displayed in the label selection buffer along with each label is simply some text after the label definition. This is no problem if you place labels keeping this in mind (e.g., @i{before} the equation, @i{at the beginning} of a fig/tab caption ...). Anyway, it is probably best to use the regexp or the list value types to fine-tune this feature. For example, if your document contains thousands of footnotes with labels fn:xxx, you may want to set this variable to the value "^fn:$" or ("fn:"). Then RefTeX will still do extensive parsing for any non-footnote labels. @end defopt @node Options - Creating Labels @section Creating Labels @cindex Options, creating labels @cindex Creating labels, options @defopt reftex-insert-label-flags Flags governing label insertion. The value has the form @example (@var{derive} @var{prompt}) @end example If @var{derive} is @code{t}, @RefTeX{} will try to derive a sensible label from context. A section label for example will be derived from the section heading. The conversion of the context to a valid label is governed by the specifications given in @code{reftex-derive-label-parameters}. If @var{derive} is @code{nil}, the default label will consist of the prefix and a unique number, like @samp{eq:23}. If @var{prompt} is @code{t}, the user will be prompted for a label string. When @var{prompt} is @code{nil}, the default label will be inserted without query. So the combination of @var{derive} and @var{prompt} controls label insertion. Here is a table describing all four possibilities: @example @group @var{derive} @var{prompt} @var{action} ----------------------------------------------------------- nil nil @r{Insert simple label, like @samp{eq:22} or @samp{sec:13}. No query.} nil t @r{Prompt for label.} t nil @r{Derive a label from context and insert. No query.} t t @r{Derive a label from context, prompt for confirmation.} @end group @end example Each flag may be set to @code{t}, @code{nil}, or a string of label type letters indicating the label types for which it should be true. Thus, the combination may be set differently for each label type. The default settings @samp{"s"} and @samp{"sft"} mean: Derive section labels from headings (with confirmation). Prompt for figure and table labels. Use simple labels without confirmation for everything else. The available label types are: @code{s} (section), @code{f} (figure), @code{t} (table), @code{i} (item), @code{e} (equation), @code{n} (footnote), @code{N} (endnote) plus any definitions in @code{reftex-label-alist}. @end defopt @deffn Hook reftex-format-label-function If non-@code{nil}, should be a function which produces the string to insert as a label definition. The function will be called with two arguments, the @var{label} and the @var{default-format} (usually @samp{\label@{%s@}}). It should return the string to insert into the buffer. @end deffn @deffn Hook reftex-string-to-label-function Function to turn an arbitrary string into a valid label. @RefTeX{}'s default function uses the variable @code{reftex-derive-label-parameters}. @end deffn @deffn Hook reftex-translate-to-ascii-function Filter function which will process a context string before it is used to derive a label from it. The intended application is to convert ISO or Mule characters into something valid in labels. The default function @code{reftex-latin1-to-ascii} removes the accents from Latin-1 characters. X-Symbol (>=2.6) sets this variable to the much more general @code{x-symbol-translate-to-ascii}. @end deffn @defopt reftex-derive-label-parameters Parameters for converting a string into a label. This variable is a list of the following items: @table @asis @item @var{nwords} Number of words to use. @item @var{maxchar} Maximum number of characters in a label string. @item @var{invalid} @code{nil}: Throw away any words containing characters invalid in labels.@* @code{t}: Throw away only the invalid characters, not the whole word. @item @var{abbrev} @code{nil}: Never abbreviate words.@* @code{t}: Always abbreviate words (see @code{reftex-abbrev-parameters}).@* @code{1}: Abbreviate words if necessary to shorten label string. @item @var{separator} String separating different words in the label. @item @var{ignorewords} List of words which should not be part of labels. @item @var{downcase} @code{t}: Downcase words before putting them into the label.@* @end table @end defopt @defopt reftex-label-illegal-re Regexp matching characters not valid in labels. @end defopt @defopt reftex-abbrev-parameters Parameters for abbreviation of words. A list of four parameters. @table @asis @item @var{min-chars} Minimum number of characters remaining after abbreviation. @item @var{min-kill} Minimum number of characters to remove when abbreviating words. @item @var{before} Character class before abbrev point in word. @item @var{after} Character class after abbrev point in word. @end table @end defopt @node Options - Referencing Labels @section Referencing Labels @cindex Options, referencing labels @cindex Referencing labels, options @defopt reftex-label-menu-flags List of flags governing the label menu makeup. The flags are: @table @asis @item @var{table-of-contents} Show the labels embedded in a table of context. @item @var{section-numbers} Include section numbers (like 4.1.3) in table of contents. @item @var{counters} Show counters. This just numbers the labels in the menu. @item @var{no-context} Non-@code{nil} means do @emph{not} show the short context. @item @var{follow} Follow full context in other window. @item @var{show-commented} Show labels from regions which are commented out. @item @var{match-everywhere} Obsolete flag. @item @var{show-files} Show begin and end of included files. @end table Each of these flags can be set to @code{t} or @code{nil}, or to a string of type letters indicating the label types for which it should be true. These strings work like character classes in regular expressions. Thus, setting one of the flags to @samp{"sf"} makes the flag true for section and figure labels, @code{nil} for everything else. Setting it to @samp{"^sf"} makes it the other way round. The available label types are: @code{s} (section), @code{f} (figure), @code{t} (table), @code{i} (item), @code{e} (equation), @code{n} (footnote), plus any definitions in @code{reftex-label-alist}. Most options can also be switched from the label menu itself, so if you decide here to not have a table of contents in the label menu, you can still get one interactively during selection from the label menu. @end defopt @defopt reftex-multiref-punctuation Punctuation strings for multiple references. When marking is used in the selection buffer to select several references, this variable associates the 3 marking characters @samp{,-+} with prefix strings to be inserted into the buffer before the corresponding @code{\ref} macro. This is used to string together whole reference sets, like @samp{eqs. 1,2,3-5,6 and 7} in a single call to @code{reftex-reference}. @end defopt @defopt reftex-ref-style-alist Alist of reference styles. Each element is a list of the style name, the name of the @LaTeX{} package associated with the style or @code{t} for any package, and an alist of macros where the first entry of each item is the reference macro and the second a key for selecting the macro when the macro type is being prompted for. (See also @code{reftex-ref-macro-prompt}.) The keys, represented as characters, have to be unique. @end defopt @defopt reftex-ref-style-default-list List of reference styles to be activated by default. The order is significant and controls the order in which macros can be cycled in the buffer for selecting a label. The entries in the list have to match the respective reference style names used in the variable @code{reftex-ref-style-alist}. @end defopt @defopt reftex-ref-macro-prompt Controls if @code{reftex-reference} prompts for the reference macro. @end defopt @deffn Hook reftex-format-ref-function If non-@code{nil}, should be a function which produces the string to insert as a reference. Note that the insertion format can also be changed with @code{reftex-label-alist}. This hook also is used by the special commands to insert, e.g., @code{\vref} and @code{\fref} references, so even if you set this, your setting will be ignored by the special commands. The function will be called with three arguments, the @var{label}, the @var{default format} which normally is @samp{~\ref@{%s@}} and the @var{reference style}. The function should return the string to insert into the buffer. @end deffn @defopt reftex-level-indent Number of spaces to be used for indentation per section level. @end defopt @defopt reftex-guess-label-type Non-@code{nil} means, @code{reftex-reference} will try to guess the label type. To do that, @RefTeX{} will look at the word before the cursor and compare it with the magic words given in @code{reftex-label-alist}. When it finds a match, @RefTeX{} will immediately offer the correct label menu; otherwise it will prompt you for a label type. If you set this variable to @code{nil}, @RefTeX{} will always prompt for a label type. @end defopt @deffn {Normal Hook} reftex-display-copied-context-hook Normal Hook which is run before context is displayed anywhere. Designed for @w{@code{X-Symbol}}, but may have other uses as well. @end deffn @deffn Hook reftex-pre-refontification-functions @code{X-Symbol} specific hook. Probably not useful for other purposes. The functions get two arguments, the buffer from where the command started and a symbol indicating in what context the hook is called. @end deffn @deffn {Normal Hook} reftex-select-label-mode-hook Normal hook which is run when a selection buffer enters @code{reftex-select-label-mode}. @end deffn @deffn Keymap reftex-select-label-map The keymap which is active in the labels selection process (@pxref{Referencing Labels}). @end deffn @node Options - Creating Citations @section Creating Citations @cindex Options, creating citations @cindex Creating citations, options @defopt reftex-bibliography-commands @LaTeX{} commands which specify the @BibTeX{} databases to use with the document. @end defopt @defopt reftex-bibfile-ignore-regexps List of regular expressions to exclude files in @code{\\bibliography@{..@}}. File names matched by any of these regexps will not be parsed. Intended for files which contain only @code{@@string} macro definitions and the like, which are ignored by @RefTeX{} anyway. @end defopt @defopt reftex-default-bibliography List of @BibTeX{} database files which should be used if none are specified. When @code{reftex-citation} is called from a document with neither a @samp{\bibliography@{...@}} statement nor a @code{thebibliography} environment, @RefTeX{} will scan these files instead. Intended for using @code{reftex-citation} in non-@LaTeX{} files. The files will be searched along the BIBINPUTS or TEXBIB path. @end defopt @defopt reftex-sort-bibtex-matches Sorting of the entries found in @BibTeX{} databases by reftex-citation. Possible values: @example nil @r{Do not sort entries.} author @r{Sort entries by author name.} year @r{Sort entries by increasing year.} reverse-year @r{Sort entries by decreasing year.} @end example @end defopt @defopt reftex-cite-format The format of citations to be inserted into the buffer. It can be a string, an alist or a symbol. In the simplest case this is just the string @samp{\cite@{%l@}}, which is also the default. See the definition of @code{reftex-cite-format-builtin} for more complex examples. If @code{reftex-cite-format} is a string, it will be used as the format. In the format, the following percent escapes will be expanded. @table @code @item %l The @BibTeX{} label of the citation. @item %a List of author names, see also @code{reftex-cite-punctuation}. @item %2a Like %a, but abbreviate more than 2 authors like Jones et al. @item %A First author name only. @item %e Works like @samp{%a}, but on list of editor names. (@samp{%2e} and @samp{%E} work a well). @end table It is also possible to access all other @BibTeX{} database fields: @example %b booktitle %c chapter %d edition %h howpublished %i institution %j journal %k key %m month %n number %o organization %p pages %P first page %r address %s school %u publisher %t title %v volume %y year %B booktitle, abbreviated %T title, abbreviated @end example @noindent Usually, only @samp{%l} is needed. The other stuff is mainly for the echo area display, and for @code{(setq reftex-comment-citations t)}. @samp{%<} as a special operator kills punctuation and space around it after the string has been formatted. A pair of square brackets indicates an optional argument, and RefTeX will prompt for the values of these arguments. Beware that all this only works with @BibTeX{} database files. When citations are made from the @code{\bibitems} in an explicit @code{thebibliography} environment, only @samp{%l} is available. If @code{reftex-cite-format} is an alist of characters and strings, the user will be prompted for a character to select one of the possible format strings. In order to configure this variable, you can either set @code{reftex-cite-format} directly yourself or set it to the @emph{symbol} of one of the predefined styles. The predefined symbols are those which have an association in the constant @code{reftex-cite-format-builtin}) E.g.: @code{(setq reftex-cite-format 'natbib)}. @end defopt @deffn Hook reftex-format-cite-function If non-@code{nil}, should be a function which produces the string to insert as a citation. Note that the citation format can also be changed with the variable @code{reftex-cite-format}. The function will be called with two arguments, the @var{citation-key} and the @var{default-format} (taken from @code{reftex-cite-format}). It should return the string to insert into the buffer. @end deffn @defopt reftex-cite-prompt-optional-args Non-@code{nil} means, prompt for empty optional arguments in cite macros. When an entry in @code{reftex-cite-format} is given with square brackets to indicate optional arguments (for example @samp{\\cite[][]@{%l@}}), RefTeX can prompt for values. Possible values are: @example nil @r{Never prompt for optional arguments} t @r{Always prompt} maybe @r{Prompt only if @code{reftex-citation} was called with C-u prefix arg} @end example Unnecessary empty optional arguments are removed before insertion into the buffer. See @code{reftex-cite-cleanup-optional-args}. @end defopt @defopt reftex-cite-cleanup-optional-args Non-@code{nil} means, remove empty optional arguments from cite macros if possible. @end defopt @defopt reftex-comment-citations Non-@code{nil} means add a comment for each citation describing the full entry. The comment is formatted according to @code{reftex-cite-comment-format}. @end defopt @defopt reftex-cite-comment-format Citation format used for commented citations. Must @emph{not} contain @samp{%l}. See the variable @code{reftex-cite-format} for possible percent escapes. @end defopt @defopt reftex-cite-punctuation Punctuation for formatting of name lists in citations. This is a list of 3 strings. @enumerate @item normal names separator, like @samp{, } in Jones, Brown and Miller @item final names separator, like @samp{ and } in Jones, Brown and Miller @item The @samp{et al.} string, like @samp{ @{\it et al.@}} in Jones @{\it et al.@} @end enumerate @end defopt @deffn {Normal Hook} reftex-select-bib-mode-hook Normal hook which is run when a selection buffer enters @code{reftex-select-bib-mode}. @end deffn @deffn Keymap reftex-select-bib-map The keymap which is active in the citation-key selection process (@pxref{Creating Citations}). @end deffn @defopt reftex-cite-key-separator String used to separate several keys in a single @samp{\\cite} macro. Per default this is @samp{","} but if you often have to deal with a lot of entries and need to break the macro across several lines you might want to change it to @samp{", "}. @end defopt @defopt reftex-create-bibtex-header Header to insert in BibTeX files generated by @code{reftex-create-bibtex-file}. @end defopt @defopt reftex-create-bibtex-footer Footer to insert in BibTeX files generated by @code{reftex-create-bibtex-file}. @end defopt @node Options - Index Support, Options - Viewing Cross-References, Options - Creating Citations, Options @section Index Support @cindex Options, Index support @cindex Index support, options @defopt reftex-support-index Non-@code{nil} means, index entries are parsed as well. Index support is resource intensive and the internal structure holding the parsed information can become quite big. Therefore it can be turned off. When this is @code{nil} and you execute a command which requires index support, you will be asked for confirmation to turn it on and rescan the document. @end defopt @defopt reftex-index-special-chars List of special characters in index entries, given as strings. These correspond to the @code{MakeIndex} keywords @code{(@var{level} @var{encap} @var{actual} @var{quote} @var{escape})}. @end defopt @defopt reftex-index-macros List of macros which define index entries. The structure of each entry is @lisp (@var{macro} @var{index-tag} @var{key} @var{prefix} @var{exclude} @var{repeat}) @end lisp @var{macro} is the macro. Arguments should be denoted by empty braces, as for example in @samp{\index[]@{*@}}. Use square brackets to denote optional arguments. The star marks where the index key is. @var{index-tag} is a short name of the index. @samp{idx} and @samp{glo} are reserved for the default index and the glossary. Other indices can be defined as well. If this is an integer, the Nth argument of the macro holds the index tag. @var{key} is a character which is used to identify the macro for input with @code{reftex-index}. @samp{?i}, @samp{?I}, and @samp{?g} are reserved for default index and glossary. @var{prefix} can be a prefix which is added to the @var{key} part of the index entry. If you have a macro @code{\newcommand@{\molec@}[1]@{#1\index@{Molecules!#1@}}, this prefix should be @samp{Molecules!}. @var{exclude} can be a function. If this function exists and returns a non-@code{nil} value, the index entry at point is ignored. This was implemented to support the (deprecated) @samp{^} and @samp{_} shortcuts in the @LaTeX{}2e @code{index} package. @var{repeat}, if non-@code{nil}, means the index macro does not typeset the entry in the text, so that the text has to be repeated outside the index macro. Needed for @code{reftex-index-selection-or-word} and for indexing from the phrase buffer. The final entry may also be a symbol. It must have an association in the variable @code{reftex-index-macros-builtin} to specify the main indexing package you are using. Valid values are currently @example default @r{The @LaTeX{} default; unnecessary to specify this one} multind @r{The multind.sty package} index @r{The index.sty package} index-shortcut @r{The index.sty packages with the ^ and _ shortcuts.} @r{Should not be used; only for old documents} @end example Note that @AUCTeX{} sets these things internally for @RefTeX{} as well, so with a sufficiently new version of @AUCTeX{}, you should not set the package here. @end defopt @defopt reftex-index-default-macro The default index macro for @code{reftex-index-selection-or-word}. This is a list with @code{(@var{macro-key} @var{default-tag})}. @var{macro-key} is a character identifying an index macro; see @code{reftex-index-macros}. @var{default-tag} is the tag to be used if the macro requires a @var{tag} argument. When this is @code{nil} and a @var{tag} is needed, @RefTeX{} will ask for it. When this is the empty string and the TAG argument of the index macro is optional, the TAG argument will be omitted. @end defopt @defopt reftex-index-default-tag Default index tag. When working with multiple indexes, RefTeX queries for an index tag when creating index entries or displaying a specific index. This variable controls the default offered for these queries. The default can be selected with @key{RET} during selection or completion. Valid values of this variable are: @example nil @r{Do not provide a default index} "tag" @r{The default index tag given as a string, e.g., "idx"} last @r{The last used index tag will be offered as default} @end example @end defopt @defopt reftex-index-math-format Format of index entries when copied from inside math mode. When @code{reftex-index-selection-or-word} is executed inside @TeX{} math mode, the index key copied from the buffer is processed with this format string through the @code{format} function. This can be used to add the math delimiters (e.g., @samp{$}) to the string. Requires the @file{texmathp.el} library which is part of @AUCTeX{}. @end defopt @defopt reftex-index-phrase-file-extension File extension for the index phrase file. This extension will be added to the base name of the master file. @end defopt @defopt reftex-index-phrases-logical-and-regexp Regexp matching the @samp{and} operator for index arguments in phrases file. When several index arguments in a phrase line are separated by this operator, each part will generate an index macro. So each match of the search phrase will produce @emph{several} different index entries. Make sure this does no match things which are not separators. This logical @samp{and} has higher priority than the logical @samp{or} specified in @code{reftex-index-phrases-logical-or-regexp}. @end defopt @defopt reftex-index-phrases-logical-or-regexp Regexp matching the @samp{or} operator for index arguments in phrases file. When several index arguments in a phrase line are separated by this operator, the user will be asked to select one of them at each match of the search phrase. The first index arg will be the default. A number key @kbd{1}--@kbd{9} must be pressed to switch to another. Make sure this does no match things which are not separators. The logical @samp{and} specified in @code{reftex-index-phrases-logical-or-regexp} has higher priority than this logical @samp{or}. @end defopt @defopt reftex-index-phrases-search-whole-words Non-@code{nil} means phrases search will look for whole words, not subwords. This works by requiring word boundaries at the beginning and end of the search string. When the search phrase already has a non-word-char at one of these points, no word boundary is required there. @end defopt @defopt reftex-index-phrases-case-fold-search Non-@code{nil} means, searching for index phrases will ignore case. @end defopt @defopt reftex-index-verify-function A function which is called at each match during global indexing. If the function returns @code{nil}, the current match is skipped. @end defopt @defopt reftex-index-phrases-skip-indexed-matches Non-@code{nil} means, skip matches which appear to be indexed already. When doing global indexing from the phrases buffer, searches for some phrases may match at places where that phrase was already indexed. In particular when indexing an already processed document again, this will even be the norm. When this variable is non-@code{nil}, @RefTeX{} checks if the match is an index macro argument, or if an index macro is directly before or after the phrase. If that is the case, that match will be ignored. @end defopt @defopt reftex-index-phrases-wrap-long-lines Non-@code{nil} means, when indexing from the phrases buffer, wrap lines. Inserting indexing commands in a line makes the line longer, often so long that it does not fit onto the screen. When this variable is non-@code{nil}, newlines will be added as necessary before and/or after the indexing command to keep lines short. However, the matched text phrase and its index command will always end up on a single line. @end defopt @defopt reftex-index-phrases-sort-prefers-entry Non-@code{nil} means when sorting phrase lines, the explicit index entry is used. Phrase lines in the phrases buffer contain a search phrase, and sorting is normally based on these. Some phrase lines also have an explicit index argument specified. When this variable is non-@code{nil}, the index argument will be used for sorting. @end defopt @defopt reftex-index-phrases-sort-in-blocks Non-@code{nil} means, empty and comment lines separate phrase buffer into blocks. Sorting will then preserve blocks, so that lines are re-arranged only within blocks. @end defopt @defopt reftex-index-phrases-map Keymap for the Index Phrases buffer. @end defopt @defopt reftex-index-phrases-mode-hook Normal hook which is run when a buffer is put into @code{reftex-index-phrases-mode}. @end defopt @defopt reftex-index-section-letters The letters which denote sections in the index. Usually these are all capital letters. Don't use any downcase letters. Order is not significant, the index will be sorted by whatever the sort function thinks is correct. In addition to these letters, @RefTeX{} will create a group @samp{!} which contains all entries sorted below the lowest specified letter. In the @file{*Index*} buffer, pressing any of these capital letters or @kbd{!} will jump to that section. @end defopt @defopt reftex-index-include-context Non-@code{nil} means, display the index definition context in the @file{*Index*} buffer. This flag may also be toggled from the @file{*Index*} buffer with the @kbd{c} key. @end defopt @defopt reftex-index-follow-mode Non-@code{nil} means, point in @file{*Index*} buffer will cause other window to follow. The other window will show the corresponding part of the document. This flag can be toggled from within the @file{*Index*} buffer with the @kbd{f} key. @end defopt @deffn Keymap reftex-index-map The keymap which is active in the @file{*Index*} buffer (@pxref{Index Support}). @end deffn @node Options - Viewing Cross-References @section Viewing Cross-References @cindex Options, viewing cross-references @cindex Viewing cross-references, options @defopt reftex-view-crossref-extra Macros which can be used for the display of cross references. This is used when @code{reftex-view-crossref} is called with point in an argument of a macro. Note that crossref viewing for citations, references (both ways) and index entries is hard-coded. This variable is only to configure additional structures for which crossreference viewing can be useful. Each entry has the structure @example (@var{macro-re} @var{search-re} @var{highlight}). @end example @var{macro-re} is matched against the macro. @var{search-re} is the regexp used to search for cross references. @samp{%s} in this regexp is replaced with the macro argument at point. @var{highlight} is an integer indicating which subgroup of the match should be highlighted. @end defopt @defopt reftex-auto-view-crossref Non-@code{nil} means, initially turn automatic viewing of crossref info on. Automatic viewing of crossref info normally uses the echo area. Whenever point is idle for more than @code{reftex-idle-time} seconds on the argument of a @code{\ref} or @code{\cite} macro, and no other message is being displayed, the echo area will display information about that cross reference. You can also set the variable to the symbol @code{window}. In this case a small temporary window is used for the display. This feature can be turned on and off from the menu (Ref->Options). @end defopt @defopt reftex-idle-time Time (secs) Emacs has to be idle before automatic crossref display or toc recentering is done. @end defopt @defopt reftex-cite-view-format Citation format used to display citation info in the message area. See the variable @code{reftex-cite-format} for possible percent escapes. @end defopt @defopt reftex-revisit-to-echo Non-@code{nil} means, automatic citation display will revisit files if necessary. When @code{nil}, citation display in echo area will only be active for cached echo strings (see @code{reftex-cache-cite-echo}), or for @BibTeX{} database files which are already visited by a live associated buffers. @end defopt @defopt reftex-cache-cite-echo Non-@code{nil} means, the information displayed in the echo area for cite macros (see variable @code{reftex-auto-view-crossref}) is cached and saved along with the parsing information. The cache survives document scans. In order to clear it, use @kbd{M-x reftex-reset-mode}. @end defopt @node Options - Finding Files @section Finding Files @cindex Options, Finding Files @cindex Finding files, options @defopt reftex-texpath-environment-variables List of specifications how to retrieve the search path for @TeX{} files. Several entries are possible. @itemize @minus @item If an element is the name of an environment variable, its content is used. @item If an element starts with an exclamation mark, it is used as a command to retrieve the path. A typical command with the kpathsearch library would be @w{@code{"!kpsewhich -show-path=.tex"}}. @item Otherwise the element itself is interpreted as a path. @end itemize Multiple directories can be separated by the system dependent @code{path-separator}. Directories ending in @samp{//} or @samp{!!} will be expanded recursively. See also @code{reftex-use-external-file-finders}. @end defopt @defopt reftex-bibpath-environment-variables List of specifications how to retrieve the search path for @BibTeX{} files. Several entries are possible. @itemize @minus @item If an element is the name of an environment variable, its content is used. @item If an element starts with an exclamation mark, it is used as a command to retrieve the path. A typical command with the kpathsearch library would be @w{@code{"!kpsewhich -show-path=.bib"}}. @item Otherwise the element itself is interpreted as a path. @end itemize Multiple directories can be separated by the system dependent @code{path-separator}. Directories ending in @samp{//} or @samp{!!} will be expanded recursively. See also @code{reftex-use-external-file-finders}. @end defopt @defopt reftex-file-extensions Association list with file extensions for different file types. This is a list of items, each item is like: @code{(@var{type} . (@var{def-ext} @var{other-ext} ...))} @example @var{type}: @r{File type like @code{"bib"} or @code{"tex"}.} @var{def-ext}: @r{The default extension for that file type, like @code{".tex"} or @code{".bib"}.} @var{other-ext}: @r{Any number of other valid extensions for this file type.} @end example When a files is searched and it does not have any of the valid extensions, we try the default extension first, and then the naked file name. @end defopt @defopt reftex-search-unrecursed-path-first Non-@code{nil} means, search all specified directories before trying recursion. Thus, in a path @samp{.//:/tex/}, search first @samp{./}, then @samp{/tex/}, and then all subdirectories of @samp{./}. If this option is @code{nil}, the subdirectories of @samp{./} are searched before @samp{/tex/}. This is mainly for speed; most of the time the recursive path is for the system files and not for the user files. Set this to @code{nil} if the default makes @RefTeX{} finding files with equal names in wrong sequence. @end defopt @defopt reftex-use-external-file-finders Non-@code{nil} means, use external programs to find files. Normally, @RefTeX{} searches the paths given in the environment variables @code{TEXINPUTS} and @code{BIBINPUTS} to find @TeX{} files and @BibTeX{} database files. With this option turned on, it calls an external program specified in the option @code{reftex-external-file-finders} instead. As a side effect, the variables @code{reftex-texpath-environment-variables} and @code{reftex-bibpath-environment-variables} will be ignored. @end defopt @defopt reftex-external-file-finders Association list with external programs to call for finding files. Each entry is a cons cell @w{@code{(@var{type} . @var{program})}}. @var{type} is either @code{"tex"} or @code{"bib"}. @var{program} is a string containing the external program to use with any arguments. @code{%f} will be replaced by the name of the file to be found. Note that these commands will be executed directly, not via a shell. Only relevant when @code{reftex-use-external-file-finders} is non-@code{nil}. @end defopt @page @node Options - Optimizations @section Optimizations @cindex Options, optimizations @cindex Optimizations, options @defopt reftex-keep-temporary-buffers Non-@code{nil} means, keep buffers created for parsing and lookup. @RefTeX{} sometimes needs to visit files related to the current document. We distinguish files visited for @table @asis @item PARSING Parts of a multifile document loaded when (re)-parsing the document. @item LOOKUP @BibTeX{} database files and @TeX{} files loaded to find a reference, to display label context, etc. @end table The created buffers can be kept for later use, or be thrown away immediately after use, depending on the value of this variable: @table @code @item nil Throw away as much as possible. @item t Keep everything. @item 1 Throw away buffers created for parsing, but keep the ones created for lookup. @end table If a buffer is to be kept, the file is visited normally (which is potentially slow but will happen only once). If a buffer is to be thrown away, the initialization of the buffer depends upon the variable @code{reftex-initialize-temporary-buffers}. @end defopt @defopt reftex-initialize-temporary-buffers Non-@code{nil} means do initializations even when visiting file temporarily. When @code{nil}, @RefTeX{} may turn off find-file hooks and other stuff to briefly visit a file. When @code{t}, the full default initializations are done (@code{find-file-hook} etc.). Instead of @code{t} or @code{nil}, this variable may also be a list of hook functions to do a minimal initialization. @end defopt @defopt reftex-no-include-regexps List of regular expressions to exclude certain input files from parsing. If the name of a file included via @code{\include} or @code{\input} is matched by any of the regular expressions in this list, that file is not parsed by @RefTeX{}. @end defopt @defopt reftex-enable-partial-scans Non-@code{nil} means, re-parse only 1 file when asked to re-parse. Re-parsing is normally requested with a @kbd{C-u} prefix to many @RefTeX{} commands, or with the @kbd{r} key in menus. When this option is @code{t} in a multifile document, we will only parse the current buffer, or the file associated with the label or section heading near point in a menu. Requesting re-parsing of an entire multifile document then requires a @kbd{C-u C-u} prefix or the capital @kbd{R} key in menus. @end defopt @defopt reftex-save-parse-info Non-@code{nil} means, save information gathered with parsing in files. The file @file{MASTER.rel} in the same directory as @file{MASTER.tex} is used to save the information. When this variable is @code{t}, @itemize @minus @item accessing the parsing information for the first time in an editing session will read that file (if available) instead of parsing the document. @item exiting Emacs or killing a buffer in reftex-mode will cause a new version of the file to be written. @end itemize @end defopt @defopt reftex-parse-file-extension File extension for the file in which parser information is stored. This extension is added to the base name of the master file. @end defopt @defopt reftex-allow-automatic-rescan Non-@code{nil} means, @RefTeX{} may rescan the document when this seems necessary. Applies (currently) only in rare cases, when a new label cannot be placed with certainty into the internal label list. @end defopt @defopt reftex-use-multiple-selection-buffers Non-@code{nil} means use a separate selection buffer for each label type. These buffers are kept from one selection to the next and need not be created for each use, so the menu generally comes up faster. The selection buffers will be erased (and therefore updated) automatically when new labels in its category are added. See the variable @code{reftex-auto-update-selection-buffers}. @end defopt @defopt reftex-auto-update-selection-buffers Non-@code{nil} means, selection buffers will be updated automatically. When a new label is defined with @code{reftex-label}, all selection buffers associated with that label category are emptied, in order to force an update upon next use. When @code{nil}, the buffers are left alone and have to be updated by hand, with the @kbd{g} key from the label selection process. The value of this variable will only have any effect when @code{reftex-use-multiple-selection-buffers} is non-@code{nil}. @end defopt @node Options - Fontification @section Fontification @cindex Options, fontification @cindex Fontification, options @defopt reftex-use-fonts Non-@code{nil} means, use fonts in label menu and on-the-fly help. Font-lock must be loaded as well to actually get fontified display. After changing this option, a rescan may be necessary to activate it. @end defopt @defopt reftex-refontify-context Non-@code{nil} means, re-fontify the context in the label menu with font-lock. This slightly slows down the creation of the label menu. It is only necessary when you definitely want the context fontified. This option may have 3 different values: @table @code @item nil Never refontify. @item t Always refontify. @item 1 Refontify when necessary, e.g., with old versions of the x-symbol package. @end table The option is ignored when @code{reftex-use-fonts} is @code{nil}. @end defopt @defopt reftex-highlight-selection Non-@code{nil} means, highlight selected text in selection and @file{*toc*} buffers. Normally, the text near the cursor is the @emph{selected} text, and it is highlighted. This is the entry most keys in the selection and @file{*toc*} buffers act on. However, if you mainly use the mouse to select an item, you may find it nice to have mouse-triggered highlighting @emph{instead} or @emph{as well}. The variable may have one of these values: @example nil @r{No highlighting.} cursor @r{Highlighting is cursor driven.} mouse @r{Highlighting is mouse driven.} both @r{Both cursor and mouse trigger highlighting.} @end example Changing this variable requires rebuilding the selection and *toc* buffers to become effective (keys @kbd{g} or @kbd{r}). @end defopt @defopt reftex-cursor-selected-face Face name to highlight cursor selected item in toc and selection buffers. See also the variable @code{reftex-highlight-selection}. @end defopt @defopt reftex-mouse-selected-face Face name to highlight mouse selected item in toc and selection buffers. See also the variable @code{reftex-highlight-selection}. @end defopt @defopt reftex-file-boundary-face Face name for file boundaries in selection buffer. @end defopt @defopt reftex-label-face Face name for labels in selection buffer. @end defopt @defopt reftex-section-heading-face Face name for section headings in toc and selection buffers. @end defopt @defopt reftex-toc-header-face Face name for the header of a toc buffer. @end defopt @defopt reftex-bib-author-face Face name for author names in bib selection buffer. @end defopt @defopt reftex-bib-year-face Face name for year in bib selection buffer. @end defopt @defopt reftex-bib-title-face Face name for article title in bib selection buffer. @end defopt @defopt reftex-bib-extra-face Face name for bibliographic information in bib selection buffer. @end defopt @defopt reftex-select-mark-face Face name for marked entries in the selection buffers. @end defopt @defopt reftex-index-header-face Face name for the header of an index buffer. @end defopt @defopt reftex-index-section-face Face name for the start of a new letter section in the index. @end defopt @defopt reftex-index-tag-face Face name for index names (for multiple indices). @end defopt @defopt reftex-index-face Face name for index entries. @end defopt @node Options - Misc @section Miscellaneous @cindex Options, misc @defopt reftex-extra-bindings Non-@code{nil} means, make additional key bindings on startup. These extra bindings are located in the users @samp{C-c letter} map. @xref{Key Bindings}. @end defopt @defopt reftex-plug-into-AUCTeX Plug-in flags for @AUCTeX{} interface. This variable is a list of 5 boolean flags. When a flag is non-@code{nil}, @RefTeX{} will @example - supply labels in new sections and environments (flag 1) - supply arguments for macros like @code{\label} (flag 2) - supply arguments for macros like @code{\ref} (flag 3) - supply arguments for macros like @code{\cite} (flag 4) - supply arguments for macros like @code{\index} (flag 5) @end example You may also set the variable itself to @code{t} or @code{nil} in order to turn all options on or off, respectively.@* Supplying labels in new sections and environments applies when creating sections with @kbd{C-c C-s} and environments with @kbd{C-c C-e}.@* Supplying macro arguments applies when you insert such a macro interactively with @kbd{C-c @key{RET}}.@* See the @AUCTeX{} documentation for more information. @end defopt @defopt reftex-revisit-to-follow Non-@code{nil} means, follow-mode will revisit files if necessary. When @code{nil}, follow-mode will be suspended for stuff in unvisited files. @end defopt @defopt reftex-allow-detached-macro-args Non-@code{nil} means, allow arguments of macros to be detached by whitespace. When this is @code{t}, the @samp{aaa} in @w{@samp{\bbb [xxx] @{aaa@}}} will be considered an argument of @code{\bb}. Note that this will be the case even if @code{\bb} is defined with zero or one argument. @end defopt @node Keymaps and Hooks @section Keymaps and Hooks @cindex Keymaps @RefTeX{} has the usual general keymap, load hook and mode hook. @deffn Keymap reftex-mode-map The keymap for @RefTeX{} mode. @end deffn @deffn {Normal Hook} reftex-load-hook Normal hook which is being run when loading @file{reftex.el}. @end deffn @deffn {Normal Hook} reftex-mode-hook Normal hook which is being run when turning on @RefTeX{} mode. @end deffn Furthermore, the four modes used for referencing labels, creating citations, the table of contents buffer and the phrases buffer have their own keymaps and mode hooks. See the respective sections. There are many more hooks which are described in the relevant sections about options for a specific part of @RefTeX{}. @node Changes @chapter Changes @cindex Changes Here is a list of recent changes to @RefTeX{}. @noindent @b{Version 4.33} @itemize @bullet @item Update to GPLv3. @item Parse files are created in a way that does not interfere with recentf mode. @end itemize @noindent @b{Version 4.32} @itemize @bullet @item First release by @AUCTeX{} project. @item Installation routine rewritten after structure of source package changed. @item Activation of @RefTeX{} changed, so make sure you read the installation instructions and remove obsolete cruft related to @RefTeX{} from your init file. @item Fixed bug where point would end up in the wrong buffer when jumping between several @LaTeX{} and phrases buffers. @item Fixed bug where @BibTeX{} keys with hyphens were parsed incorrectly. @item Some performance improvements. @item The separator used between multiple citations in a \cite macro can now be changed by customizing the variable @code{reftex-cite-key-separator}. @end itemize @noindent @b{Version 4.28} @itemize @bullet @item Support for the Jurabib package. @item Improvements when selecting several items in a selection buffer. @end itemize @noindent @b{Version 4.26} @itemize @bullet @item Support for global incremental search. @item Some improvements for XEmacs compatibility. @end itemize @noindent @b{Version 4.25} @itemize @bullet @item Fixed bug with @samp{%F} in a label prefix. Added new escapes @samp{%m} and @samp{%M} for mater file name and master directory. @end itemize @noindent @b{Version 4.24} @itemize @bullet @item Inserting citation commands now prompts for optional arguments when called with a prefix argument. Related new options are @code{reftex-cite-prompt-optional-args} and @code{reftex-cite-cleanup-optional-args}. @item New option @code{reftex-trust-label-prefix}. Configure this variable if you'd like RefTeX to base its classification of labels on prefixes. This can speed-up document parsing, but may in some cases reduce the quality of the context used by RefTeX to describe a label. @item Fixed bug in @code{reftex-create-bibtex-file} when @code{reftex-comment-citations} is non-@code{nil}. @item Fixed bugs in indexing: Case-sensitive search, quotes before and/or after words. Disabled indexing in comment lines. @end itemize @noindent @b{Version 4.22} @itemize @bullet @item New command @code{reftex-create-bibtex-file} to create a new database with all entries referenced in the current document. @item New keys @kbd{e} and @kbd{E} allow you to produce a BibTeX database file from entries marked in a citation selection buffer. @end itemize @noindent @b{Version 4.21} @itemize @bullet @item Renaming labels from the toc buffer with key @kbd{M-%}. @end itemize @noindent @b{Version 4.20} @itemize @bullet @item Structure editing capabilities. The command keys @kbd{<} and @kbd{>} in the TOC buffer promote/demote the section at point or all sections in the current region. @item New option @code{reftex-toc-split-windows-fraction} to set the size of the window used by the TOC@. This makes the old variable @code{reftex-toc-split-windows-horizontally-fraction} obsolete. @item A dedicated frame can show the TOC with the current section always automatically highlighted. The frame is created and deleted from the toc buffer with the @kbd{d} key. @end itemize @noindent @b{Version 4.19} @itemize @bullet @item New command @code{reftex-toc-recenter} (@kbd{C-c -}) which shows the current section in the TOC buffer without selecting the TOC window. @item Recentering happens automatically in idle time when the option @code{reftex-auto-recenter-toc} is turned on. @item Fixed several bugs related to automatic cursor positioning in the TOC buffer. @item The highlight in the TOC buffer stays when the focus moves to a different window. @item New command @code{reftex-goto-label}. @item Part numbers are no longer included in chapter numbers, and a new part does not reset the chapter counter. See new option @code{reftex-part-resets-chapter}. @end itemize @noindent @b{Version 4.18} @itemize @bullet @item @code{reftex-citation} uses the word before the cursor as a default search string. @item Simplified several regular expressions for speed. @item Better support for chapterbib. @end itemize @noindent @b{Version 4.17} @itemize @bullet @item The toc window can be split off horizontally. See new options @code{reftex-toc-split-windows-horizontally}, @code{reftex-toc-split-windows-horizontally-fraction}. @item It is possible to specify a function which verifies an index match during global indexing. See new option @code{reftex-index-verify-function}. @item The macros which input a file in LaTeX (like \input, \include) can be configured. See new option @code{reftex-include-file-commands}. @item The macros which specify the bibliography file (like \bibliography) can be configured. See new option @code{reftex-bibliography-commands}. @item The regular expression used to search for the \bibliography macro has been relaxed to allow for @samp{@{\bibliography@{...@}@}} needed by chapterbib. @item Small bug fixes. @end itemize @noindent @b{Version 4.15} @itemize @bullet @item Fixed bug with parsing of BibTeX files, when fields contain quotes or unmatched parenthesis. @item Small bug fixes. @item Improved interaction with Emacs LaTeX mode. @end itemize @noindent @b{Version 4.12} @itemize @bullet @item Support for @file{bibentry} citation style. @end itemize @noindent @b{Version 4.11} @itemize @bullet @item Fixed bug which would parse @samp{\Section} just like @samp{\section}. @end itemize @noindent @b{Version 4.10} @itemize @bullet @item Renamed @file{reftex-vcr.el} to @file{reftex-dcr.el} because of conflict with @file{reftex-vars.el} on DOS machines. @item New options @code{reftex-parse-file-extension} and @code{reftex-index-phrase-file-extension}. @end itemize @noindent [.....] @ignore @noindent @b{Version 4.09} @itemize @bullet @item New option @code{reftex-toc-max-level} to limit the depth of the toc. New key binding @kbd{t} in the @file{*toc*} buffer to change this setting. @item RefTeX maintains an @file{Index Phrases} file in which phrases can be collected. When the document is ready, RefTeX can search all these phrases and assist indexing all matches. @item The variables @code{reftex-index-macros} and @code{reftex-index-default-macro} have changed their syntax slightly. The @var{repeat} parameter has move from the latter to the former. Also calls to @code{reftex-add-index-macros} from AUCTeX style files need to be adapted. @item The variable @code{reftex-section-levels} no longer contains the default stuff which has been moved to a constant. @item Environments like theorems can be placed into the TOC by putting entries for @samp{"begin@{theorem@}"} in @code{reftex-section-levels}. @end itemize @noindent @b{Version 4.06} @itemize @bullet @item @code{reftex-section-levels} can contain a function to compute the level of a sectioning command. @item Multiple @code{thebibliography} environments recognized. @end itemize @noindent @b{Version 4.04} @itemize @bullet @item New option @code{reftex-index-default-tag} implements a default for queries. @end itemize @noindent @b{Version 4.02} @itemize @bullet @item macros ending in @samp{refrange} are considered to contain references. @item Index entries made with @code{reftex-index-selection-or-word} in TeX math mode automatically get enclosing @samp{$} to preserve math mode. See new option @code{reftex-index-math-format}. Requires AUCTeX. @end itemize @noindent @b{Version 4.01} @itemize @bullet @item New command @code{reftex-index-globally} to index a word in many places in the document. Also available from the index buffer with @kbd{&}. @item The first item in a @code{reftex-label-alist} entry may now also be a parser function to do non-standard parsing. @item @code{reftex-auto-view-crossref} no longer interferes with @code{pop-up-frames} (patch from Stefan Monnier). @end itemize @noindent @b{Version 4.00} @itemize @bullet @item RefTeX has been split into several smaller files which are autoloaded on demand. @item Index support, along with many new options. @item The selection of keys for @code{\ref} and @code{\cite} now allows you to select multiple items by marking entries with the @kbd{m} key. @item Fancyref support. @end itemize @noindent @b{Version 3.43} @itemize @bullet @item Viewing cross-references generalized. Now works on @code{\label}, @code{\ref}, @code{\cite}, @code{\bibitem}, @code{\index}, variations of these, and from BibTeX buffers. @item New option @code{reftex-view-crossref-extra}. @item Support for the additional sectioning commands @code{\addchap} and @code{\addsec} which are defined in the LaTeX KOMA-Script classes. @item Files in @code{reftex-default-bibliography} will be searched along @code{BIBINPUTS} path. @item Reading a parse file now checks consistency. @end itemize @noindent @b{Version 3.42} @itemize @bullet @item File search further refined. New option @code{reftex-file-extensions}. @item @file{*toc*} buffer can show the file boundaries of a multifile document, all labels and associated context. New keys @kbd{i}, @kbd{l}, and @kbd{c}. New options @code{reftex-toc-include-labels}, @code{reftex-toc-include-context}, @code{reftex-toc-include-file-boundaries}. @end itemize @noindent @b{Version 3.41} @itemize @bullet @item New options @code{reftex-texpath-environment-variables}, @code{reftex-use-external-file-finders}, @code{reftex-external-file-finders}, @code{reftex-search-unrecursed-path-first}. @item @emph{kpathsearch} support. See new options and @code{reftex-bibpath-environment-variables}. @end itemize @noindent @b{Version 3.38} @itemize @bullet @item @code{reftex-view-crossref} no longer moves to find a macro. Point has to be on the macro argument. @end itemize @noindent @b{Version 3.36} @itemize @bullet @item New value @code{window} for option @code{reftex-auto-view-crossref}. @end itemize @noindent @b{Version 3.35} @itemize @bullet @item ISO 8859 Latin-1 chars are converted to ASCII to derive better labels. This takes back the related changes in 3.34 for safety reasons. @end itemize @noindent @b{Version 3.34} @itemize @bullet @item Additional flag in @code{reftex-derive-label-parameters} do make only lowercase labels (default @code{t}). @item All @file{.rel} files have a final newline to avoid queries. @item Single byte representations of accented European letters (ISO-8859-1) are now valid in labels. @end itemize @noindent @b{Version 3.33} @itemize @bullet @item Multiple selection buffers are now hidden buffers (they start with a SPACE). @item Fixed bug with file search when TEXINPUTS environment variable is empty. @end itemize @noindent @b{Version 3.30} @itemize @bullet @item In @code{reftex-citation}, the regular expression used to scan BibTeX files can be specified using completion on known citation keys. @item New keys @kbd{a} and @kbd{A} in BibTeX selection process to cite @emph{all} entries. @item New command @code{reftex-renumber-simple-labels} to renumber simple labels like @samp{eq:13} sequentially through a document. @end itemize @noindent @b{Version 3.28} @itemize @bullet @item Auto view crossref for XEmacs uses @code{post-command-hook} to restart the timer, since itimer restart is not reliable. @item Option @code{reftex-bibfile-ignore-list} renamed to @code{-regexps}. @item Expansion of recursive tex and bib path rewritten. @item Fixed problem where @RefTeX{} did not scan unsaved buffers. @item Fixed bug with section numbering after *-red sections. @end itemize @noindent @b{Version 3.27} @itemize @bullet @item Macros can define @emph{neutral} labels, just like @code{\label} itself. @item New option @code{reftex-allow-detached-macro-args}, default @code{nil}! @end itemize @noindent @b{Version 3.26} @itemize @bullet @item [X]Emacs 19 no longer supported. Use 3.22 for Emacs 19. @item New hooks @code{reftex-translate-to-ascii-function}, @code{reftex-string-to-label-function}. @item Made sure automatic crossref display will not visit/scan files. @end itemize @noindent @b{Version 3.25} @itemize @bullet @item Echoing of citation info caches the info for displayed entries. New option @code{reftex-cache-cite-echo}. @item @kbd{M-x reftex-reset-mode} now also removes the file with parsing info. @item Default of @code{reftex-revisit-to-follow} changed to @code{nil}. @end itemize @noindent @b{Version 3.24} @itemize @bullet @item New option @code{reftex-revisit-to-echo}. @item Interface with X-Symbol (>=2.6) is now complete and stable. @item Adapted to new outline, which uses overlays. @item File names in @code{\bibliography} may now have the @code{.bib} extension. @item Fixed Bug with parsing "single file" from master file buffer. @end itemize @noindent @b{Version 3.23} @itemize @bullet @item Parse files @file{MASTER.rel} made compatible between Emacs and XEmacs. @item @code{kill-emacs-hook} and @code{kill-buffer-hook} now write the parse file. @item The cursor inside a @code{\ref} or @code{\cite} macro can now trigger automatic display of crossref information in the echo area. See variable @code{reftex-auto-view-crossref}. @item AUCTeX interface updates: @itemize @minus @item AUCTeX 9.9c and later notifies @RefTeX{} about new sections. @item @RefTeX{} notifies AUCTeX about new labels. @item @code{TeX-arg-ref} no longer used (introduction was unnecessary). @item @code{reftex-arg-label} and @code{reftex-arg-cite} fixed up. @item Settings added to @RefTeX{} via style files remain local. @end itemize @item Fixed bug with @code{reftex-citation} in non-latex buffers. @item Fixed bug with syntax table and context refontification. @item Safety-net for name change of @code{font-lock-reference-face}. @end itemize @noindent @b{Version 3.22} @itemize @bullet @item Fixed bug with empty context strings. @item @code{reftex-mouse-view-crossref} is now bound by default at @kbd{S-mouse-2}. @end itemize @noindent @b{Version 3.21} @itemize @bullet @item New options for all faces used by @RefTeX{}. They're in the customization group @code{reftex-fontification-configurations}. @end itemize @noindent @b{Version 3.19} @itemize @bullet @item Fixed bug with AUCTeX @code{TeX-master}. @end itemize @noindent @b{Version 3.18} @itemize @bullet @item The selection now uses a recursive edit, much like minibuffer input. This removes all restrictions during selection. E.g., you can now switch buffers at will, use the mouse etc. @item New option @code{reftex-highlight-selection}. @item @kbd{mouse-2} can be used to select in selection and @file{*toc*} buffers. @item Fixed some problems regarding the interaction with VIPER mode. @item Follow-mode is now only used after point motion. @item @RefTeX{} now finally does not fontify temporary files anymore. @end itemize @noindent @b{Version 3.17} @itemize @bullet @item Additional bindings in selection and @file{*toc*} buffers. @kbd{g} redefined. @item New command @code{reftex-save-all-document-buffers}. @item Magic word matching made more intelligent. @item Selection process can switch to completion (with @key{TAB}). @item @code{\appendix} is now recognized and influences section numbering. @item File commentary shortened considerably (use Info documentation). @item New option @code{reftex-no-include-regexps} to skip some include files. @item New option @code{reftex-revisit-to-follow}. @end itemize @noindent @b{Version 3.16} @itemize @bullet @item New hooks @code{reftex-format-label-function}, @code{reftex-format-ref-function}, @code{reftex-format-cite-function}. @item TeXInfo documentation completed. @item Some restrictions in Label inserting and referencing removed. @item New variable @code{reftex-default-bibliography}. @end itemize @noindent @b{Version 3.14} @itemize @bullet @item Selection buffers can be kept between selections: this is faster. See new variable @code{reftex-use-multiple-selection-buffers}. @item Prefix interpretation of reftex-view-crossref changed. @item Support for the @code{varioref} package (@kbd{v} key in selection buffer). @end itemize @noindent @b{Version 3.12} @itemize @bullet @item There are 3 new keymaps for customization: @code{reftex-toc-map}, @code{reftex-select-label-map}, @code{reftex-select-bib-map}. @item Refontification uses more standard font-lock stuff. @item When no BibTeX database files are specified, citations can also use @code{\bibitem} entries from a @code{thebibliography} environment. @end itemize @noindent @b{Version 3.11} @itemize @bullet @item Fixed bug which led to naked label in (e.g.)@: footnotes. @item Added scroll-other-window functions to RefTeX-Select. @end itemize @noindent @b{Version 3.10} @itemize @bullet @item Fixed a bug which made reftex 3.07 fail on [X]Emacs version 19. @item Removed unimportant code which caused OS/2 Emacs to crash. @item All customization variables now accessible from menu. @end itemize @noindent @b{Version 3.07} @itemize @bullet @item @code{Ref} menu improved. @end itemize @noindent @b{Version 3.05} @itemize @bullet @item Compatibility code now first checks for XEmacs feature. @end itemize @noindent @b{Version 3.04} @itemize @bullet @item Fixed BUG in the @emph{xr} support. @end itemize @noindent @b{Version 3.03} @itemize @bullet @item Support for the LaTeX package @code{xr}, for inter-document references. @item A few (minor) Mule-related changes. @item Fixed bug which could cause @emph{huge} @file{.rel} files. @item Search for input and @file{.bib} files with recursive path definitions. @end itemize @noindent @b{Version 3.00} @itemize @bullet @item @RefTeX{} should work better for very large projects: @item The new parser works without creating a master buffer. @item Rescanning can be limited to a part of a multifile document. @item Information from the parser can be stored in a file. @item @RefTeX{} can deal with macros having a naked label as an argument. @item Macros may have white space and newlines between arguments. @item Multiple identical section headings no longer confuse @code{reftex-toc}. @item @RefTeX{} should work correctly in combination with buffer-altering packages like outline, folding, x-symbol, iso-cvt, isotex, etc. @item All labeled environments discussed in @emph{The LaTeX Companion} by Goossens, Mittelbach & Samarin, Addison-Wesley 1994) are part of @RefTeX{}'s defaults. @end itemize @noindent @b{Version 2.17} @itemize @bullet @item Label prefix expands % escapes with current file name and other stuff. @item Citation format now with % escapes. This is not backward compatible! @item TEXINPUTS variable recognized when looking for input files. @item Context can be the nth argument of a macro. @item Searching in the select buffer is now possible (@kbd{C-s} and @kbd{C-r}). @item Display and derive-label can use two different context methods. @item AMSmath @code{xalignat} and @code{xxalignat} added. @end itemize @noindent @b{Version 2.14} @itemize @bullet @item Variable @code{reftex-plug-into-AUCTeX} simplifies cooperation with AUCTeX. @end itemize @noindent @b{Version 2.11} @itemize @bullet @item Submitted for inclusion to Emacs and XEmacs. @end itemize @noindent @b{Version 2.07} @itemize @bullet @item New functions @code{reftex-search-document}, @code{reftex-query-replace-document}. @end itemize @noindent @b{Version 2.05} @itemize @bullet @item Support for @file{custom.el}. @item New function @code{reftex-grep-document} (thanks to Stephen Eglen). @end itemize @noindent @b{Version 2.03} @itemize @bullet @item @code{figure*}, @code{table*}, @code{sidewaysfigure/table} added to default environments. @item @code{reftex-bibfile-ignore-list} introduced (thanks to Rory Molinari). @item New functions @code{reftex-arg-label}, @code{reftex-arg-ref}, @code{reftex-arg-cite}. @item Emacs/XEmacs compatibility reworked. XEmacs 19.15 now is required. @item @code{reftex-add-to-label-alist} (to be called from AUCTeX style files). @item Finding context with a hook function. @item Sorting BibTeX entries (new variable: @code{reftex-sort-bibtex-matches}). @end itemize @noindent @b{Version 2.00} @itemize @bullet @item Labels can be derived from context (default for sections). @item Configuration of label insertion and label referencing revised. @item Crossref fields in BibTeX database entries. @item @code{reftex-toc} introduced (thanks to Stephen Eglen). @end itemize @noindent @b{Version 1.09} @itemize @bullet @item Support for @code{tex-main-file}, an analogue for @code{TeX-master}. @item MS-DOS support. @end itemize @noindent @b{Version 1.07} @itemize @bullet @item @RefTeX{} gets its own menu. @end itemize @noindent @b{Version 1.05} @itemize @bullet @item XEmacs port. @end itemize @noindent @b{Version 1.04} @itemize @bullet @item Macros as wrappers, AMSTeX support, delayed context parsing for new labels. @end itemize @end ignore @noindent @b{Version 1.00} @itemize @bullet @item released on 7 Jan 1997. @end itemize @node GNU Free Documentation License @appendix GNU Free Documentation License @include doclicense.texi @node Index @unnumbered Index @printindex cp @bye