\input texinfo
@setfilename auctex
@settitle AUC TeX
@direntry
* AUCTeX: (auctex).      A much enhanced LaTeX mode for GNU Emacs.
@end direntry
@c footnotestyle separate
@c paragraphindent 2
@comment %**end of header 
@iftex
@tolerance 10000
@end iftex

@c $Id: auc-tex.texi,v 1.128 2001/10/02 11:44:38 abraham Exp $

@finalout
@titlepage
@title AUC @TeX{}
@subtitle A much enhanced La@TeX{} mode for GNU Emacs.
@subtitle Version 11.01
  
@author by Kresten Krab Thorup
@author updated for 6.1 to 11.01 by Per Abrahamsen
@page
@vskip 0pt plus 1filll
Copyright @copyright{} 1992, Kresten Krab Thorup @*
Copyright @copyright{} 1993, 1994, 1995, 2001 Per Abrahamsen
 
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice
are preserved on all copies.

@ignore
Permission is granted to process this file through TeX and print the
results, provided the printed document carries copying permission
notice identical to this one except for the removal of this paragraph
(this paragraph not being relevant to the printed manual).
@end ignore

Permission is granted to copy and distribute modified versions of this
manual under the conditions for verbatim copying, provided also that the
section entitled ``Copying'' is included exactly as in the original, and
provided that the entire resulting derived work is distributed under the
terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual
into another language, under the above conditions for modified versions,
except that this permission notice may be stated in a translation
approved by the Free Software Foundation.
@end titlepage
@page

@ifinfo
@node top, Copying, (dir), (dir)
@top AUC @TeX{}
 
AUC @TeX{} is an integrated environment for editing La@TeX{} and
@TeX{} files.@refill

This file documents AUC @TeX{} version 11.01.

Although AUC @TeX{} contains a large number of features, there are no
reasons to despair.  You can continue to write @TeX{} and La@TeX{}
documents the way you are used to, and only start using the multiple
features in small steps.  AUC @TeX{} is not monolithic, each feature
described in this manual is useful by itself, but together they provide
an environment where you will make very few LaTeX errors, and makes it
easy to find the errors that may slip through anyway.

If you want to make AUC TeX aware of style files and multi-file
documents right away, insert the following in your @file{.emacs} file.
@lisp
(setq TeX-auto-save t)
(setq TeX-parse-self t)
(setq-default TeX-master nil)
@end lisp

NOTE: This documentation is preliminary.  It should however cover most
important points.  Corrections or perhaps rewrites of sections
are VERY WELCOME.@refill

Kresten Krab Thorup (6.0) @*
Per Abrahamsen (later updates)

There is a mailing list for discussion about AUC @TeX{} and announcement
of alpha releases, write to @samp{auc-tex-request@@sunsite.dk} to join
it.  Send contributions to @samp{auc-tex@@sunsite.dk}.

Bug reports, suggestions for new features, and pleas for help should go
to either @samp{auc-tex_mgr@@sunsite.dk} (the AUC @TeX{} managers), or
to @samp{auc-tex@@sunsite.dk} (the mailing list) if they might have
general interest.  Please use the command @kbd{M-x
TeX-submit-bug-report} to report bugs if possible.@refill

@end ifinfo

@menu
* Copying::                     Copying
* Introduction::                Why AUC @TeX{} is good for you.
* Frequently Used Commands::    Inserting Frequently Used Commands  
* Advanced Features::           Advanced Editing Features 
* Formatting::                  Formatting and Printing 
* Multifile::                   Multifile Documents
* Parsing Files::               Automatic Parsing of @TeX{} files.
* I18n::                        Internationalization
* Automatic::                   Automatic Customization
* Style Files::                 Writing Your own Style Support
* Installation::                How to install AUC @TeX{}
* History::                     The History of AUC @TeX{}
* Projects::                    Wishlist
* Credit::                      Credit 
* Key Index::                   Key Index
* Function Index::              Function Index
* Variable Index::              Variable Index
* Concept Index::               Concept Index

@end menu

@node Copying, Introduction, top, top
@unnumbered Copying
@cindex Copying
@cindex Copyright
@cindex GPL
@cindex General Public License
@cindex License
@cindex Free
@cindex Free software
@cindex Distribution
@cindex Right
@cindex Warranty

(This text stolen from the @TeX{}info 2.16 distribution).

The programs currently being distributed that relate to AUC @TeX{}
include lisp files for GNU Emacs.  These programs are @dfn{free}; this
means that everyone is free to use them and free to redistribute them on
a free basis.  The AUC @TeX{} related programs are not in the public
domain; they are copyrighted and there are restrictions on their
distribution, but these restrictions are designed to permit everything
that a good cooperating citizen would want to do.  What is not allowed
is to try to prevent others from further sharing any version of these
programs that they might get from you.@refill

  Specifically, we want to make sure that you have the right to give
away copies of the programs that relate to AUC @TeX{}, that you receive
source code or else can get it if you want it, that you can change these
programs or use pieces of them in new free programs, and that you know
you can do these things.@refill

  To make sure that everyone has such rights, we have to forbid you to
deprive anyone else of these rights.  For example, if you distribute
copies of the AUC @TeX{} related programs, you must give the recipients all
the rights that you have.  You must make sure that they, too, receive or
can get the source code.  And you must tell them their rights.@refill

  Also, for our own protection, we must make certain that everyone finds
out that there is no warranty for the programs that relate to AUC @TeX{}.
If these programs are modified by someone else and passed on, we want
their recipients to know that what they have is not what we distributed,
so that any problems introduced by others will not reflect on our
reputation.@refill

  The precise conditions of the licenses for the programs currently
being distributed that relate to AUC @TeX{} are found in the General
Public Licenses that accompany them.@refill

@node Introduction, Frequently Used Commands, Copying, top
@include intro.texi

@node Frequently Used Commands, Advanced Features, Introduction, top
@chapter Inserting Frequently Used Commands  

The most commonly used commands/macros of AUC @TeX{} are those which
simply insert templates for often used @TeX{} and/or La@TeX{}
constructs, like font changes, handling of environments, etc.
These features are very simple, and easy to learn, and help you
avoid stupid mistakes like mismatched braces, or
@samp{\begin@{@}}-@samp{\end@{@}} pairs.@refill

@menu
* Quotes::                      Inserting double quotes
* Font Specifiers::             Inserting Font Specifiers 
* Sectioning::                  Inserting chapters, sections, etc. 
* Environments::                Inserting Environment Templates
@end menu

@node Quotes, Font Specifiers, Frequently Used Commands, Frequently Used Commands
@section Insertion of Quotes, Dollars, and Braces

@cindex Quotes
@cindex Double quotes
@cindex Braces
@cindex Brackets
@cindex Dollars
@cindex Math mode delimiters
@cindex Matching dollar signs
@cindex Display math mode

In @TeX{}, literal double quotes @samp{"like this"} are seldom used,
instead two single quotes are used @samp{``like this''}.  To help you
insert these efficiently, AUC @TeX{} allows you to continue to press
@kbd{"} to insert two single quotes.  To get a literal double quote,
press @kbd{"} twice.

@deffn Command TeX-insert-quote @var{count}
@kindex "
(@kbd{"}) Insert the appropriate quote marks for TeX.  

Inserts the value of @code{TeX-open-quote} (normally @samp{``}) or
@code{TeX-close-quote} (normally @samp{''}) depending on the context.
With prefix argument, always inserts @samp{"} characters.@refill
@end deffn

@defopt TeX-open-quote
String inserted by typing @kbd{"} to open a quotation.
@end defopt

@defopt TeX-close-quote
String inserted by typing @kbd{"} to close a quotation.
@end defopt

If you include the style file @file{german} @code{TeX-open-quote} and
@code{TeX-close-quote} will both be set to @samp{"}.

In AUC @TeX{}, dollar signs should match like they do in @TeX{}.  This
has been partially implemented, we assume dollar signs always match
within a paragraph.  The first @samp{$} you insert in a paragraph will
do nothing special.  The second @samp{$} will match the first.  This
will be indicated by moving the cursor temporarily over the first dollar
sign.  If you enter a dollar sign that matches a double dollar sign
@samp{$$} AUC @TeX{} will automatically insert two dollar signs.  If you
enter a second dollar sign that matches a single dollar sign, the single
dollar sign will automatically be converted to a double dollar sign.

@deffn Command TeX-insert-dollar @var{arg}
@kindex $
(@kbd{$}) Insert dollar sign.  

Show matching dollar sign if this dollar sign end the @TeX{} math mode.  
Ensure double dollar signs match up correctly by inserting extra
dollar signs when needed.

With optional @var{arg}, insert that many dollar signs.
@end deffn

To avoid unbalanced braces, it is useful to insert them pairwise.  You
can do this by typing @kbd{C-c @{}.

@deffn Command TeX-insert-braces
@kindex C-c @{
(@kbd{C-c @{}) Make a pair of braces and position the cursor
to type inside of them.
@end deffn

@node Font Specifiers, Sectioning, Quotes, Frequently Used Commands
@section Inserting Font Specifiers 

@cindex Fonts
@cindex Font macros
@cindex Changing font
@cindex Specifying a font

Perhaps the most used keyboard commands of AUC @TeX{} are the short-cuts
available for easy insertion of font changing macros.  They all put the
font change inside a @TeX{} group, a practice that help preventing
subtle errors.  The most significant advantage of using these command
instead of typing it in yourself, is that the braces will always match
correctly.  

If you give an argument (that is, type @kbd{C-u}) to the font command,
the innermost font will be replaced, i.e. the font in the @TeX{} group
around point will be changed.  The following table shows the available
commands, with @code{@point{}} indicating the position where the text
will be inserted.@refill

@table @kbd
@item C-c C-f C-r 
@kindex C-c C-f C-r
@cindex @code{\textrm}
Insert roman @r{\textrm@{@point{}@}} text.

@item C-c C-f C-b
@kindex C-c C-f C-b
@cindex @code{\textbf}
Insert @b{bold face} @samp{\textbf@{@point{}@}} text.

@item C-c C-f C-i
@kindex C-c C-f C-i
@cindex @code{\textit}
Insert @i{italics} @samp{\textit@{@point{}@}} text.

@item C-c C-f C-e
@kindex C-c C-f C-e
@cindex @code{\emph}
Insert @i{emphasized} @samp{\emph@{@point{}@}} text.

@item C-c C-f C-s
@kindex C-c C-f C-s
@cindex @code{\textsl}
Insert @i{slanted} @samp{\textsl@{@point{}@}} text.

@item C-c C-f C-t
@kindex C-c C-f C-t
@cindex @code{\texttt}
Insert @t{typewriter} @samp{\texttt@{@point{}@}} text.

@item C-c C-f C-c
@kindex C-c C-f C-c
@cindex @code{\textsc}
Insert @sc{small caps} @samp{\textsc@{@point{}@}} text.

@item C-c C-f C-d
@kindex C-c C-f C-c
@cindex Deleting fonts
Delete the innermost font specification containing point.

@end table

@deffn Command TeX-font @var{arg}
@kindex C-c C-f
(@kbd{C-c C-f}) Insert template for font change command.

If @var{replace} is not nil, replace current font.  @var{what}
determines the font to use, as specified by @code{TeX-font-list}.
@end deffn

@defopt TeX-font-list
List of fonts used by TeX-font.

Each entry is a list with three elements.  The first element is the
key to activate the font.  The second element is the string to insert
before point, and the third element is the string to insert after
point.  An optional fourth element means always replace if not nil.
@end defopt

@node Sectioning, Environments, Font Specifiers, Frequently Used Commands
@section Inserting chapters, sections, etc. 
@cindex Sectioning
@cindex Sections
@cindex Chapters
@cindex @code{\chapter}
@cindex @code{\section}
@cindex @code{\subsection}
@cindex @code{\label}

Insertion of sectioning macros, that is @samp{\chapter},
@samp{\section}, @samp{\subsection}, etc. and accompanying
@samp{\label}'s may be eased by using @kbd{C-c C-s}.  This command is
highly customizable, the following describes the default behavior.

When invoking you will be asked for a section macro to insert.  An
appropriate default is automatically selected by AUC @TeX{}, that is
either: at the top of the document; the top level sectioning for that
document style, and any other place: The same as the last occurring
sectioning command.

Next, you will be asked for the actual name of that section, and
last you will be asked for a label to be associated with that section.
The label will be prefixed by the value specified in
@code{LaTeX-section-hook}.

@deffn Command LaTeX-section @var{arg}
@kindex C-c C-s
(@kbd{C-c C-s}) Insert a sectioning command.

Determine the type of section to be inserted, by the argument
@var{arg}.@refill

@itemize @bullet
@item
If @var{arg} is nil or missing, use the current level.
@item
If @var{arg} is a list (selected by C-u), go downward one level.
@item
If @var{arg} is negative, go up that many levels.
@item
If @var{arg} is positive or zero, use absolute level:
@itemize +
@item
0 : part
@item
1 : chapter
@item
2 : section
@item
3 : subsection
@item
4 : subsubsection
@item
5 : paragraph
@item
6 : subparagraph
@end itemize
@end itemize

The following variables can be set to customize the function.

@vtable @code
@item LaTeX-section-hook
Hooks to be run when inserting a section.
@item LaTeX-section-label       
Prefix to all section references.
@end vtable

@end deffn

The precise behavior of @code{LaTeX-section} is defined by the contents
of @code{LaTeX-section-hook}.

@defopt LaTeX-section-hook
List of hooks to run when a new section is inserted.

The following variables are set before the hooks are run

@table @var
@item level
Numeric section level, default set by prefix arg to @code{LaTeX-section}.
@item name
Name of the sectioning command, derived from @var{level}.
@item title
The title of the section, default to an empty string.
@item toc
Entry for the table of contents list, default nil.  
@item done-mark
Position of point afterwards, default nil meaning after the inserted
text.
@end table

A number of hooks are already defined.  Most likely, you will be able to
get the desired functionality by choosing from these hooks.

@ftable @code
@item LaTeX-section-heading
Query the user about the name of the sectioning command.  Modifies
@var{level} and @var{name}.
@item LaTeX-section-title
Query the user about the title of the section. Modifies @var{title}.
@item LaTeX-section-toc
Query the user for the toc entry.  Modifies @var{toc}.
@item LaTeX-section-section
Insert La@TeX{} section command according to @var{name}, @var{title},
and @var{toc}.  If @var{toc} is nil, no toc entry is inserted.  If
@var{toc} or @var{title} are empty strings, @var{done-mark} will be
placed at the point they should be inserted.
@item LaTeX-section-label
Insert a label after the section command.  Controlled by the variable
@code{LaTeX-section-label}.
@end ftable 

To get a full featured @code{LaTeX-section} command, insert 

@lisp
(setq LaTeX-section-hook
      '(LaTeX-section-heading
        LaTeX-section-title
        LaTeX-section-toc
        LaTeX-section-section
        LaTeX-section-label))
@end lisp

in your @file{.emacs} file.
@end defopt

The behavior of @code{LaTeX-section-label} is determined by the
variable @code{LaTeX-section-label}.@refill

@defopt LaTeX-section-label
Default prefix when asking for a label.

If it is a string, it is used unchanged for all kinds of sections. 
If it is nil, no label is inserted.
If it is a list, the list is searched for a member whose car is equal
to the name of the sectioning command being inserted.  The cdr is then
used as the prefix.  If the name is not found, or if the cdr is nil,
no label is inserted.

@cindex Prefix for labels
@cindex Label prefix
@cindex Labels
By default, chapters have a prefix of @samp{cha:} while sections and
subsections have a prefix of @samp{sec:}.  Labels are not automatically
inserted for other types of sections.
@end defopt

@node Environments,  , Sectioning, Frequently Used Commands
@section Inserting Environment Templates
@cindex Environments
@cindex @samp{\begin}
@cindex @samp{\end}

A large apparatus is available that supports insertions of environments,
that is @samp{\begin@{@}} --- @samp{\end@{@}} pairs.

AUC @TeX{} is aware of most of the actual environments available in a
specific document.  This is achieved by examining your
@samp{\documentclass} command, and consulting a precompiled list of
environments available in a large number of styles.

You insert an environment with @kbd{C-c C-e}, and select an environment
type.  Depending on the environment, AUC @TeX{} may ask more questions
about the optional parts of the selected environment type.  With
@kbd{C-u C-c C-e} you will change the current environment.

@deffn Command LaTeX-environment @var{arg}
@kindex C-c C-e
(@kbd{C-c C-e})  AUC @TeX{} will prompt you for an environment
to insert.  At this prompt, you may press @key{TAB} or @key{SPC} to
complete a partially written name, and/or to get a list of available
environments.  After selection of a specific environment AUC @TeX{} may
prompt you for further specifications.  

If the optional argument @var{arg} is not-nil (i.e. you have given a
prefix argument), the current environment is modified and no new
environment is inserted.
@end deffn

As a default selection, AUC @TeX{} will suggest the environment last
inserted or, as the first choice the value of the variable
@code{LaTeX-default-environment}.

@defopt LaTeX-default-environment
Default environment to insert when invoking @samp{LaTeX-environment}
first time.
@end defopt

If the document is empty, or the cursor is placed at the top of the
document, AUC @TeX{} will default to insert a `document' environment.

Most of these are described further in the following sections, and you
may easily specify more, as described in `Customizing environments'.

@menu
* Floats::                      Floats
* Itemize-like::                Itemize-like
* Tabular-like::                Tabular-like
* Customizing environments::    Customizing environments
@end menu

You can close the current environment with @kbd{C-c ]}, but we suggest
that you use @kbd{C-c C-e} to insert complete environments instead.

@deffn Command LaTeX-close-environment
@kindex C-c ]
(@kbd{C-c ]}) Insert an @samp{\end} that matches the current environment. 
@end deffn

@node Floats, Itemize-like, Environments, Environments
@subsection Floats
@cindex Floats
@cindex Figures
@cindex Figure environment
@cindex Tables
@cindex Table environment

Figures and tables (i.e., floats) may also be inserted using AUC @TeX{}.
After choosing either `figure' or `table' in the environment list
described above, you will be prompted for a number of additional things.

@table @var
@item float-to
This field is the option of float environments that controls how they are
placed in the final document.  In La@TeX{} this is a sequence of the
letters @samp{htbp} as described in the La@TeX{} manual.  The value will
default to the value of @code{LaTeX-float}.
@vindex LaTeX-float

@item caption
This is the caption of the float.  

@item label
The label of this float.  The label will have a default prefix, which is
controlled by the variables @code{LaTeX-figure-label} and
@code{LaTeX-table-label}.
@vindex LaTeX-figure-label
@vindex LaTeX-table-label
@cindex Prefix for labels
@cindex Label prefix
@cindex Labels
@end table

Moreover, in the case of a `figure' environment, you will be asked if
you want to insert a `center' environment inside the figure.

@defopt LaTeX-float
Default placement for floats.
@end defopt

@defopt LaTeX-figure-label
Prefix to use for figure labels.
@end defopt

@defopt LaTeX-table-label
Prefix to use for table labels.
@end defopt

@node Itemize-like, Tabular-like, Floats, Environments
@subsection Itemize-like
@cindex Itemize
@cindex Enumerates
@cindex Descriptions
@cindex Items
@cindex \item

In an itemize-like environment, nodes (i.e., @samp{\item}s) may be
inserted using @kbd{C-c @key{LFD}}.  

@deffn Command LaTeX-insert-item
@kindex C-c @key{LFD}
(@kbd{C-c @key{LFD}}) Close the current item, move to the next line and
insert an appropriate @samp{\item} for the current environment. That is,
`itemize' and `enumerate' will have @samp{\item } inserted, while
`description' will have @samp{\item[]} inserted.
@end deffn

@node Tabular-like, Customizing environments, Itemize-like, Environments
@subsection Tabular-like

When inserting Tabular-like environments, that is, `tabular' `array'
etc., you will be prompted for a template for that environment.

@node Customizing environments,  , Tabular-like, Environments
@subsection Customizing environments

@xref{Adding Environments}, for how to customize the list of known
environments. 

@node Advanced Features, Formatting, Frequently Used Commands, top
@chapter Advanced Editing Features 
@cindex Advanced features
        
The previous chapter described how to write the main body of the text
easily and with a minimum of errors.  In this chapter we will describe
some features for entering more specialized sorts of text, and for
indenting and navigating through the document.
 
@menu
* Mathematics::                 Entering Mathematics 
* Completion::                  Completion 
* Commenting::                  Commenting 
* Marking and formatting::      Marking, Formatting and Indenting
* Outline::                     Hiding text
@end menu

@node Mathematics, Completion, Advanced Features, Advanced Features
@section Entering Mathematics 
@cindex Mathematics
@cindex Symbols
@cindex Abbreviations

@TeX{} is written by a mathematician, and has always contained good
support for formatting mathematical text.  AUC @TeX{} supports this
tradition, by offering a special minor mode for entering text with many
mathematical symbols.  You can enter this mode by typing @kbd{C-c
~}.@refill

@deffn Command LaTeX-math-mode
@kindex C-c ~
(@kbd{C-c ~}) Toggle LaTeX-math-mode.  This is a minor mode rebinding
the key @code{LaTeX-math-abbrev-prefix} to allow easy typing of
mathematical symbols.  @kbd{`} will read a character from the keyboard,
and insert the symbol as specified in @code{LaTeX-math-list}.  If given a
prefix argument, the symbol will be surrounded by dollar signs.@refill
@end deffn

You can use another prefix key (instead of @kbd{`}) by  setting the
variable LaTeX-math-abbrev-prefix.

@defopt LaTeX-math-abbrev-prefix
A string containing the prefix of @code{LaTeX-math-mode} commands;
This value defaults to @kbd{`}. @refill
@end defopt

The variable @code{LaTeX-math-list} holds the actual mapping.

@defopt LaTeX-math-list
A list containing key command mappings to use in @code{LaTeX-math-mode}.
The car of each element is the key and the cdr is the macro name. 
@end defopt

The AUC @TeX{} distributions includes a reference card for
@code{LaTeX-math-mode} with a list of all math mode commands.

@node Completion, Commenting, Mathematics, Advanced Features
@section Completion 
@cindex Completion 
@cindex Expansion
@cindex Macro expansion
@cindex Macro completion
@cindex Macro arguments
@cindex Arguments to @TeX{} macros

Emacs lisp programmers probably know the @code{lisp-complete-symbol}
command, usually bound to @kbd{M-@key{TAB}}.  Users of the wonderful
ispell mode know and love the @code{ispell-complete-word} command from
that package.  Similarly, AUC @TeX{} has a @code{TeX-complete-symbol}
command, usually bound to @kbd{M-@key{TAB}}.  Using
@code{LaTeX-complete-symbol} makes it easier to type and remember the
names of long La@TeX{} macros.
 
In order to use @code{TeX-complete-symbol}, you should write a backslash
and the start of the macro.  Typing @kbd{M-@key{TAB}} will now
complete as much of the macro, as it unambiguously can.  For example, if
you type `@samp{\renewc}' and then `@kbd{M-@key{TAB}}, it will expand
to `@samp{\renewcommand}'.
 
@deffn Command TeX-complete-symbol
@kindex M-@key{TAB}
(@kbd{M-@key{TAB}})  Complete @TeX{} symbol before point.
@end deffn

A more direct way to insert a macro is with @code{TeX-insert-macro},
bound to @kbd{C-c C-m}.  It has the advantage over completion that it
knows about the argument of most standard La@TeX{} macros, and will
prompt for them.  It also knows about the type of the arguments, so it
will for example give completion for the argument to @samp{\include}.
Some examples are listed below.

@deffn Command TeX-insert-macro
@kindex C-c C-m
(@kbd{C-c C-m}) Prompt (with completion) for the name of a @TeX{} macro,
and if AUC @TeX{} knows the macro, prompt for each argument.
@end deffn

As a default selection, AUC @TeX{} will suggest the macro last inserted
or, as the first choice the value of the variable
@code{TeX-default-macro}.

@defopt TeX-default-macro
Default macro to insert when invoking @code{TeX-insert-macro} first time.
@end defopt

A faster alternative is to bind the function @code{TeX-electric-macro}
to @samp{\}.  This can be done by setting the variable @code{TeX-electric-escape}

@defopt TeX-electric-escape
If this is non-nil when AUC @TeX{} is loaded, the @TeX{} escape
character @samp{\} will be bound to @code{TeX-electric-macro}
@end defopt

The difference between @code{TeX-insert-macro} and
@code{TeX-electric-macro} is that space will complete and exit from the
minibuffer in @code{TeX-electric-macro}.  Use @key{TAB} if you merely
want to complete.

@deffn Command TeX-electric-macro
Prompt (with completion) for the name of a @TeX{} macro,
and if AUC @TeX{} knows the macro, prompt for each argument.
Space will complete and exit.
@end deffn

By default AUC @TeX{} will put an empty set braces @samp{@{@}} after a
macro with no arguments to stop it from eating the next whitespace.
This can be stopped by entering @code{LaTeX-math-mode},
@pxref{Mathematics}, or by setting @code{TeX-insert-braces} to nil

@defopt TeX-insert-braces
If non-nil, append a empty pair of braces after inserting a macro.
@end defopt

Completions work because AUC @TeX{} can analyze @TeX{} files, and store
symbols in emacs lisp files for later retrieval.  @xref{Automatic}, for
more information.

@cindex \cite, completion of
@cindex Bib@TeX{}, completion
@cindex cite, completion of
@cindex bibliography, completion
@cindex citations, completion of
@cindex \label, completion
@cindex \ref, completion
@cindex labels, completion of
AUC @TeX{} will also make completion for many macro arguments, for
example existing labels when you enter a @samp{\ref} macro with
@code{TeX-insert-macro} or @code{TeX-electric-macro}, and Bib@TeX{}
entries when you enter a @samp{\cite} macro.  For this kind of
completion to work, parsing must be enabled as described in
@pxref{Parsing Files}.  For @samp{\cite} you must also make sure that
the Bib@TeX{} files have been saved at least once after you enabled
automatic parsing on save, and that the basename of the Bib@TeX{} file
does not conflict with the basename of one of @TeX{} files.

@node Commenting, Marking and formatting, Completion, Advanced Features
@section Commenting 

It is often necessary to comment out temporarily a region of @TeX{} or
La@TeX{} code.  This can be done with the commands @kbd{C-c ;} and
@kbd{C-c %}.  @kbd{C-c ;} will comment out all lines in the current
region, while @kbd{C-c %} will comment out the current paragraph.  To
uncomment, simply type @kbd{C-u - C-c ;} to uncomment all lines in the
region, or @kbd{C-u - C-c %} uncomment all comment lines around point.  

By default, these commands will insert or remove a single @samp{%}.  To
insert more than one, give an argument. @kbd{C-u 5 C-c %} will add five
@samp{%} to each line, while @kbd{C-u - 5 C-c %} will remove up to 5
@samp{%} from each line.

@deffn Command TeX-comment-region @var{count}
@kindex C-c ;
(@kbd{C-c ;}) Add or remove @samp{%} from the beginning of each line in
the current region, as specified by @var{count}.
@end deffn

@deffn Command TeX-comment-paragraph @var{count}
@kindex C-c %
(@kbd{C-c %}) Add or remove @samp{%} from the beginning of each line in
the current paragraph, as specified by @var{count}.  When removing
@samp{%}'s the paragraph is considered to consist of all preceding and
succeeding lines starting with a @samp{%}, until the first non-comment
line.
@end deffn

@node Marking and formatting, Outline, Commenting, Advanced Features
@section Marking, Formatting and Indenting
@cindex Formatting
@cindex Filling
@cindex Indenting
@cindex Reformatting
@cindex Reindenting

AUC @TeX{} contains very advanced handling of indentation and
reformatting of the La@TeX{} source.  If you have already tried AUC
@TeX{} with @code{auto-fill-mode} enabled, you may have noted that the
source is automatically indented and formatted as you write it.  More
over, AUC @TeX{} is able to format sections of text on demand.

It is important to realize, that AUC @TeX{} comes with `formatting' in
two fashions.  Either letting @TeX{} format the file, or letting AUC
@TeX{} make the ASCII document look better.

Indentation is done by La@TeX{} environments and by @TeX{} groups, that
is the body of an environment is indented by the value of
@code{LaTeX-indent-level} (default 2).  Also, items of an `itemize-like'
environment are indented by the value of @code{LaTeX-item-indent},
default @minus{}2.  This indentation makes it easier to see the
structure of the document, and to catch errors such as a missing close
brace.  Thus, the indentation is done for precisely the same reasons
that you would indent ordinary computer programs.
@vindex LaTeX-indent-level
@vindex LaTeX-item-indent

The following is a short sample of an itemize environment indented by
AUC @TeX{}.  If more environments are nested, they are indented
`accumulated' just like most programming languages usually are seen
indented in nested constructs.

@example
\begin@{itemize@}
\item Insertion of templates for logical-structural compositions such as
  environments and sections.
\item Hot-keys for easy access to certain often used constructs, e.g.,
  font changes, accented letters, and mathematical symbols.
\item Running application programs (such as \TeX), and then parsing
  the output so that errors in the document may be located 
  easily.
\item Support for multi-file documents.
\item Online help for \AllTeX\ error messages.
\item Outlining\Dash i.e., manipulating the document as a composition
  of nested/sequential logical constructs.
\item Instant formatting and indentation of the \ascii-document in
  order to make it easier to read.
\item `Completion' (and thereby spell-checking) of partially written
  control sequences.
\end@{itemize@}
@end example

You can format and indent single lines, paragraphs, environments, or
sections.

@table @kbd
@item @key{TAB}
@kindex @key{TAB}
@findex LaTeX-indent-line
@code{LaTeX-indent-line} will indent the current line.

@item @key{LFD}
@kindex @key{LFD}
@code{reindent-then-newline-and-indent} indents the current line, and
then inserts a new line (much like @key{RET}) and move the cursor to an
appropriate position by the left margin.

@item M-q
@kindex M-q
Alias for @kbd{C-c C-q C-p}

@item C-c C-q C-p
@kindex C-c C-q C-p
@findex LaTeX-fill-paragraph
@code{LaTeX-fill-paragraph} will reformat or `fill' the current
paragraph.

@item C-c C-q C-e
@kindex C-c C-q C-e
@findex LaTeX-fill-environment
@code{LaTeX-fill-environment} will reformat or `fill' the current
environment.  This may e.g. be the `document' environment, in which case
the entire document will be formatted.

@item C-c C-q C-s
@kindex C-c C-q C-s
@findex LaTeX-fill-section
@code{LaTeX-fill-section} will reformat or `fill' the current
logical sectional unit. 

@item M-g
@kindex M-g
Alias for @kbd{C-c C-q C-r}

@item C-c C-q C-r
@kindex C-c C-q C-r
@findex LaTeX-fill-region
@code{LaTeX-fill-region} will format or `fill' the current region. 
@end table

@strong{Warning:} The formatting cannot handle tabular-like
environments. Those will be completely messed-up if you try to format
them.

@defopt LaTeX-indent-level
Number of spaces to add to the indentation for each @samp{\begin} not
matched by a @samp{\end}.@refill 
@end defopt

@defopt LaTeX-item-indent
Number of spaces to add to the indentation for @samp{\item}'s in list
environments.@refill
@end defopt

@defopt TeX-brace-indent-level
Number of spaces to add to the indentation for each @samp{@{} not
matched by a @samp{@}}.@refill 
@end defopt

@node Outline,  , Marking and formatting, Advanced Features
@section Outlining the Document
@cindex Outlining
@cindex Headers
@cindex Sections
@cindex Overview
@cindex Folding

AUC @TeX{} supports the standard outline minor mode using La@TeX{}
sectioning commands as header lines.  @xref{Outline Mode, , Outline
Mode, emacs, GNU Emacs Manual}.  By default
@code{outline-minor-mode} will use the prefix key @kbd{C-c} which is
also used by AUC @TeX{}, so it is suggested that you choose another
prefix key by inserting 

@lisp
  (setq outline-minor-mode-prefix "\C-c\C-o") ; Or whatever...
@end lisp

in your @file{.emacs} file.

You can add your own headings by setting the variable
@code{TeX-outline-extra}. 

@defvar TeX-outline-extra
List of extra @TeX{} outline levels.

Each element is a list with two entries.  The first entry is the regular
expression matching a header, and the second is the level of the header.
A @samp{^} is automatically prepended to the regular expressions in the
list, so they must match text at the beginning of the line.

See @code{LaTeX-section-list} for existing header levels.
@end defvar

The following example add @samp{\item} and @samp{\bibliography} headers,
with @samp{\bibliography} at the same outline level as @samp{\section},
and @samp{\item} being below @samp{\subparagraph}.

@example
(setq TeX-outline-extra
      '(("[ \t]*\\\\\\(bib\\)?item\\b" 7)
        ("\\\\bibliography\\b" 2)))
@end example

You may want to check out the unbundled @file{out-xtra} package for even
better outline support.  It is available from your favorite emacs lisp
archive.

@node Formatting, Multifile, Advanced Features, top
@chapter Formatting and Printing 

The most powerful features of AUC @TeX{} may be those allowing you to
run (La)@TeX{} and other external commands like Bib@TeX{} and
@code{makeindex} from within Emacs, viewing and printing the results,
and moreover allowing you to @emph{debug} your documents.

@menu
* Commands::                    Invoking external commands.
* Debugging::                   Debugging @TeX{} and La@TeX{} output.
* Checking::                    Checking the document.
* Control::                     Controlling the processes.
@end menu

@node Commands, Debugging, Formatting, Formatting
@section Executing Commands
@cindex Formatting
@cindex Running La@TeX{}
@cindex Running @TeX{}
@cindex La@TeX{}
@cindex @TeX{}
@cindex Running commands
@cindex Default command
@cindex Header
@cindex Trailer
@cindex Setting the header
@cindex Setting the trailer
@cindex Region
@cindex Region file
@cindex Setting the default command
@cindex Commands
@cindex External Commands
@cindex Indexing
@cindex Making an index
@cindex Running @code{makeindex}
@cindex @code{makeindex}
@cindex Bib@TeX{}
@cindex Bibliography
@cindex Literature
@cindex Running Bib@TeX{}
@cindex Making a bibliography
@cindex Printing
@cindex Writing to a printer
@cindex Viewing
@cindex Previewing
@cindex Starting a previewer

Formatting the document with @TeX{} or La@TeX{}, viewing with a
previewer, printing the document, running Bib@TeX{}, making an index, or
checking the document with @code{lacheck} or @code{chktex} all require
running an external command.

There are two ways to run an external command, you can either run it on
all of the current documents with @code{TeX-command-master}, or on the
current region with @code{TeX-command-region}.@refill

@deffn Command TeX-command-master
@kindex C-c C-c
(@kbd{C-c C-c})  Query the user for a command, and run it on the master
file associated with the current buffer.  The name of the master file is
controlled by the variable @code{TeX-master}.  The available commands are
controlled by the variable @code{TeX-command-list}.@refill
@vindex TeX-master
@vindex TeX-command-list
@end deffn

@xref{Installation}, for a discussion about @code{TeX-command-list} and
@ref{Multifile} for a discussion about @code{TeX-master}.

@deffn Command TeX-command-region
@kindex C-c C-r
(@kbd{C-c C-r}) Query the user for a command, and run it on the ``region
file''.  Some commands (typically those invoking @TeX{} or La@TeX{})
will write the current region into the region file, after extracting the
header and tailer from the master file.  If mark is not active, use the
old region.  The name of the region file is controlled by the variable
@code{TeX-region}.  The name of the master file is controlled by the
variable @code{TeX-master}.  The header is all text up to the line
matching the regular expression @code{TeX-header-end}.  The trailer is
all text from the line matching the regular expression
@code{TeX-trailer-start}.  The available commands are controlled by the
variable @code{TeX-command-list}.@refill
@vindex TeX-region
@vindex TeX-header-end
@vindex TeX-trailer-start
@vindex TeX-master
@vindex TeX-command-list
@end deffn

AUC @TeX{} will allow one process for each document, plus one process
for the region file to be active at the same time.  Thus, if you are
editing @var{n} different documents, you can have @var{n} plus one
processes running at the same time.  If the last process you started was
on the region, the commands described in @ref{Debugging} and
@ref{Control} will work on that process, otherwise they will work on the
process associated with the current document.

@defopt TeX-region
The name of the file for temporarily storing the text when formatting
the current region.
@end defopt

@defopt TeX-header-end
A regular expression matching the end of the header.  By default, this
is @samp{\begin@{document@}} in La@TeX{} mode and @samp{%**end of
header} in @TeX{} mode.@refill
@end defopt 

@defopt TeX-trailer-start
A regular expression matching the start of the trailer.  By default,
this is @samp{\end@{document@}} in La@TeX{} mode and @samp{\bye} in
@TeX{} mode.@refill
@end defopt

AUC @TeX{} will try to guess what command you want to invoke, but by
default it will assume that you want to run @TeX{} in @TeX{} mode and
La@TeX{} in La@TeX{} mode.  You can overwrite this by setting the
variable @code{TeX-command-default}.

@defopt TeX-command-default
The default command to run in this buffer.  Must be an entry in
@code{TeX-command-list}.
@end defopt

If you want to overwrite the values of @code{TeX-header-end},
@code{TeX-trailer-start}, or @code{TeX-command-default}, you can do that
for all files by setting them in either @code{TeX-mode-hook},
@code{plain-TeX-mode-hook}, or @code{LaTeX-mode-hook}.  To overwrite
them for a single file, define them as file variables (@pxref{File
Variables,,,emacs,The Emacs Editor}).  You do this by putting special
formatted text near the end of the file.
@cindex Variables
@cindex File Variables
@cindex Local Variables

@example
% Local Variables: 
% TeX-header-end: "% End-Of-Header"
% TeX-trailer-start: "% Start-Of-Trailer"
% TeX-command-default: "SliTeX"
% End: 
@end example

AUC @TeX{} will try to save any buffers related to the document, and
check if the document needs to be reformatted.  If the variable
@code{TeX-save-query} is non-nil, AUC @TeX{} will query before saving
each file.  By default AUC @TeX{} will check emacs buffers associated
with files in the current directory, in one of the
@code{TeX-macro-private} directories, and in the @code{TeX-macro-global}
directories.  You can change this by setting the variable
@code{TeX-check-path}.@refill

@defopt TeX-check-path
Directory path to search for dependencies.

If nil, just check the current file.
Used when checking if any files have changed.
@end defopt

@node Debugging, Checking, Commands, Formatting
@section Catching the errors
@cindex Debugging
@cindex Errors
@cindex Parsing errors
@cindex Parsing TeX output
@cindex Next error
@cindex Parsing LaTeX errors
@cindex Overfull boxes
@cindex Bad boxes
@cindex Wonderful boxes

Once you've formatted your document you may `debug' it, i.e. browse
through the errors (La)@TeX{} reported.

@deffn Command TeX-next-error
@kindex C-c `
(@kbd{C-c `})  Go to the next error reported by @TeX{}.  The view will
be split in two, with the cursor placed as close as possible to the
error in the top view.  In the bottom view, the error message will be
displayed along with some explanatory text.
@end deffn

Normally AUC @TeX{} will only report real errors, but you may as well
ask it to report `bad boxes' as well.

@deffn Command TeX-toggle-debug-bad-boxes
@kindex C-c C-w
(@kbd{C-c C-w})  Toggle whether AUC @TeX{} should stop at bad boxes
(i.e. over/under full boxes) as well as at normal errors.
@end deffn

As default, AUC @TeX{} will display that special @samp{*help*} buffer
containing the error reported by @TeX{} along with the documentation.
There is however an `expert' option, which allows you to display the
real @TeX{} output.

@defopt TeX-display-help
When non-nil AUC @TeX{} will automatically display a help text whenever
an error is encountered using @code{TeX-next-error} (@kbd{C-c `}).
@end defopt

@node Checking, Control, Debugging, Formatting
@section Checking for problems
@cindex Checking
@cindex @code{lacheck}
@cindex @code{chktex}
@cindex Finding errors
@cindex Running @code{lacheck}
@cindex Running @code{chktex}
@cindex Style
@cindex Problems

Running @TeX{} or La@TeX{} will only find regular errors in the
document, not examples of bad style.  Furthermore, description of the
errors may often be confusing.  The utility @code{lacheck} can be used
to find style errors, such as forgetting to escape the space after an
abbreviation or using @samp{...} instead of @samp{\ldots} and many other
problems like that.  You start @code{lacheck} with @kbd{C-c C-c C h e c
k @key{RET}}.  The result will be a list of errors in the
@samp{*compilation*} buffer.  You can go through the errors with
@kbd{C-x `} (@code{next-error}, @pxref{Compilation,,,emacs,The Emacs
Editor}), which will move point to the location of the next
error.@refill

Another newer program which can be used to find errors is @code{chktex}.
It is much more configurable than @code{lacheck}, but doesn't find all
the problems @code{lacheck} does, at least in its default configuration.
You must install the programs before using them, and for @code{chktex}
you must also modify @code{TeX-command-list}.  You can get
@code{lacheck} from @file{<URL:ftp://sunsite.dk/pub/text/lacheck/>}
or alternatively @code{chktex} from
@file{<URL:ftp://ftp.dante.de/pub/tex/support/chktex/>}.  Search for
`chktex' in @file{tex.el} to see how to switch between them.@refill

@node Control,  , Checking, Formatting
@section Controlling the output
@cindex Controlling the output
@cindex Output
@cindex Redisplay output
@cindex Processes
@cindex Killing a process
@cindex Finding the master file
@cindex Master file
@cindex Stopping a process
@cindex Current file
@cindex Finding the current file

A number of commands are available for controlling the output of an
application running under AUC @TeX{}

@deffn Command TeX-kill-job
@kindex C-c C-k
(@kbd{C-c C-k})  Kill currently running external application.
This may be either of @TeX{}, La@TeX{}, previewer, Bib@TeX{}, etc.
@end deffn

@deffn Command TeX-recenter-output-buffer
@kindex C-c C-l
(@kbd{C-c C-l})  Recenter the output buffer so that the bottom line is
visible.
@end deffn

@deffn Command TeX-home-buffer
@kindex C-c ^
(@kbd{C-c ^}) Go to the `master' file in the document associated with
the current buffer, or if already there, to the file where the current
process was started. 
@end deffn

@node Multifile, Parsing Files, Formatting, top
@chapter Multifile Documents
@cindex Multifile Documents
@cindex Documents
@cindex Documents with multiple files
@cindex Multiple Files
@cindex Many Files
@cindex Including
@cindex \include
@cindex Inputing
@cindex \input
@cindex Master file

You may wish to spread a document over many files (as you are likely to do if
there are multiple authors, or if you have not yet discovered the power
of the outline commands (@pxref{Outline})).  This can be done by having a
``master'' file in which you include the various files with the @TeX{}
macro @samp{\input} or the La@TeX{} macro @samp{\include}.  These
files may also include other files themselves.  However, to format the
document you must run the commands on the top level master file.@refill

When you, for example, ask AUC @TeX{} to run a command on the master file,
it has no way of knowing the name of the master file.  By default,
it will assume that the current file is the master file.  If you insert
the following in your @file{.emacs} file AUC @TeX{} will use a more
advanced algorithm.

@lisp
(setq-default TeX-master nil) ; Query for master file.
@end lisp

If AUC @TeX{} finds the line indicating the end of the header in a
master file (@code{TeX-header-end}), it can figure out for itself that
this is a master file.  Otherwise, it will ask for the name of the
master file associated with the buffer.  To avoid asking you again, AUC
@TeX{} will automatically insert the name of the master file as a file
variable (@pxref{File Variables,,,emacs,The Emacs Editor}).  You can
also insert the file variable yourself, by putting the following text at
the end of your files.@refill
@findex TeX-header-end

@example
% Local Variables: 
% TeX-master: "master"
% End: 
@end example

You should always set this variable to the name of the top level document.  If
you always use the same name for your top level documents, you can set
@code{TeX-master} in your @file{.emacs} file.

@lisp
(setq-default TeX-master "master") ; All master files called "master".
@end lisp

@defopt TeX-master
The master file associated with the current buffer.  If the file being
edited is actually included from another file, then you can tell AUC @TeX{}
the name of the master file by setting this variable.  If there are
multiple levels of nesting, specify the top level file.@refill

If this variable is @code{nil}, AUC @TeX{} will query you for the
name.@refill

If the variable is @code{t}, then AUC @TeX{} will assume the file is a master
file itself.@refill

If the variable is @code{shared}, then AUC @TeX{} will query for the name,
but will not change the file.@refill

It is suggested that you use the File Variables (@pxref{File
Variables,,,emacs,The Emacs Editor}) to set this variable permanently
for each file.@refill
@end defopt

@defopt TeX-one-master
Regular expression matching ordinary TeX files.

You should set this variable to match the name of all files, for which
it is a good idea to append a @code{TeX-master} file variable entry
automatically.  When AUC @TeX{} adds the name of the master file as a
file variable, it does not need to ask next time you edit the file.

If you dislike AUC @TeX{} automatically modifying your files, you can
set this variable to @samp{"<none>"}.  By default, AUC @TeX{} will modify
any file with an extension of @samp{.tex}.@refill
@end defopt

AUC @TeX{} keeps track of macros, environments, labels, and style
files that are used in a given document.  For this to work with
multifile documents, AUC @TeX{} has to have a place to put the
information about the files in the document.  This is done by having an
@file{auto} subdirectory placed in the directory where your document is
located.  Each time you save a file, AUC @TeX{} will write information
about the file into the @file{auto} directory.  When you load a file,
AUC @TeX{} will read the information in the @file{auto} directory
about the file you loaded @emph{and the master file specified by
@code{TeX-master}}.  Since the master file (perhaps indirectly) includes
all other files in the document, AUC @TeX{} will get information from
all files in the document.  This means that you will get from each file,
for example, completion for all labels defined anywhere in the document.

AUC TeX will create the @file{auto} directory automatically if
@code{TeX-auto-save} is non-nil.  Without it, the files in the document
will not know anything about each other, except for the name of the
master file.  @xref{Automatic Local}.

@deffn Command TeX-save-document
@kindex C-c C-d
(@kbd{C-c C-d}) Save all buffers known to belong to the current document.
@end deffn

@defopt TeX-save-query
If non-nil, then query the user before saving each file with
@code{TeX-save-document}. 
@end defopt


@node Parsing Files, I18n, Multifile, top
@chapter Automatic Parsing of @TeX{} files.
@cindex Parsing @TeX{}
@cindex Automatic Parsing
@cindex Tabs
@cindex Tabify
@cindex Untabify

AUC @TeX{} depends heavily on being able to extract information from the
buffers by parsing them.  Since parsing the buffer can be somewhat slow,
the parsing is initially disabled.  You are encouraged to enable them by
adding the following lines to your @file{.emacs} file.

@lisp
(setq TeX-parse-self t) ; Enable parse on load.
(setq TeX-auto-save t) ; Enable parse on save.
@end lisp

The later command will make AUC @TeX{} store the parsed information in
an @file{auto} subdirectory in the directory each time the @TeX{} files
are stored, @pxref{Automatic Local}.  If AUC @TeX{} finds the pre-parsed
information when loading a file, it will not need to reparse the buffer.
The information in the @file{auto} directory is also useful for
multifile documents @pxref{Multifile}, since it allows each file to
access the parsed information from all the other files in the document.
This is done by first reading the information from the master file, and
then recursively the information from each file stored in the master
file.@refill

The variables can also be done on a per file basis, by changing the file
local variables.

@example
% Local Variables: 
% TeX-parse-self: t
% TeX-auto-save: t
% End: 
@end example

Even when you have disabled the automatic parsing, you can force the
generation of style information by pressing @kbd{C-c C-n}.  This is
often the best choice, as you will be able to decide when it is
necessary to reparse the file.

@defopt TeX-parse-self
Parse file after loading it if no style hook is found for it.
@end defopt

@defopt TeX-auto-save
Automatically save style information when saving the buffer.
@end defopt

@deffn Command TeX-normal-mode @var{arg}
@kindex C-c C-n
(@kbd{C-c C-n}) Remove all information about this buffer, and apply the
style hooks again.  Save buffer first including style information.  With
optional argument, also reload the style hooks.
@end deffn

When AUC TeX saves your buffer, it will by default convert all tabs in
your buffer into spaces.  To disable this behaviour, insert the
following in your @file{.emacs} file.

@lisp
(setq TeX-auto-untabify nil)
@end lisp

@defopt TeX-auto-untabify
Automatically remove all tabs from a file before saving it.
@end defopt

Instead of disabling the parsing entirely, you can also speed it
significantly up by limiting the information it will search for (and
store) when parsing the buffer.  You can do this by setting the default
values for the buffer local variables @code{TeX-auto-regexp-list} and
@code{TeX-auto-parse-length} in your @file{.emacs} file.

@lisp
;; Only parse \documentstyle information.
(setq-default TeX-auto-regexp-list 'LaTeX-auto-minimal-regexp-list) 
;; The documentstyle command is usually near the beginning.
(setq-default TeX-auto-parse-length 2000)
@end lisp

This example will speed the parsing up significantly, but AUC @TeX{}
will no longer be able to provide completion for labels, macros,
environments, or bibitems specified in the document, nor will it know
what files belong to the document.

These variables can also be specified on a per file basis, by changing
the file local variables.

@example
% Local Variables: 
% TeX-auto-regexp-list: TeX-auto-full-regexp-list
% TeX-auto-parse-length: 999999
% End: 
@end example

@defopt TeX-auto-regexp-list
List of regular expressions used for parsing the current file.
@end defopt

@defopt TeX-auto-parse-length
Maximal length of TeX file that will be parsed.
@end defopt

The pre-specified lists of regexps are defined below.  You can use these
before loading AUC @TeX{} by quoting them, as in the example above.

@defvr Constant TeX-auto-empty-regexp-list
Parse nothing
@end defvr

@defvr Constant LaTeX-auto-minimal-regexp-list
Only parse documentstyle.
@end defvr

@defvr Constant LaTeX-auto-label-regexp-list
Only parse La@TeX{} labels.
@end defvr

@defvr Constant LaTeX-auto-regexp-list
Parse common La@TeX{} commands.
@end defvr

@defvr Constant plain-TeX-auto-regexp-list
Parse common plain @TeX{} commands.
@end defvr

@defvr Constant TeX-auto-full-regexp-list
Parse all @TeX{} and La@TeX{} commands that AUC @TeX{} can use.
@end defvr

@node I18n, Automatic, Parsing Files, top
@chapter Internationalization
@cindex Internationalization
@cindex Character set
@cindex National letters

There are several problems associated with editing non-English @TeX{}
with GNU Emacs.  Modern versions of GNU Emacs and @TeX{} are usable for
European (Latin, Cyrillic, Greek) based languages, but special versions
of TeX and Emacs are needed for Korean, Japanese, and Chinese. 

@menu
* European::                    Using AUC @TeX{} for European languages.
* Japanese::                    Japanese @TeX{}
@end menu

@node European, Japanese, I18n, I18n
@section Using AUC @TeX{} for European languages.
@cindex Europe
@cindex European Characters
@cindex ISO 8859 Latin 1
@cindex Latin 1
@cindex ISO 8859 Latin 2
@cindex Latin 2
@cindex ANSI 
@cindex Denmark
@cindex Danish
@cindex Holland
@cindex Dutch
@cindex Germany
@cindex Poland

First you will need a way to write non-ASCII characters.  You can either
use macros, or teach @TeX{} about the ISO character sets.  I prefer the
later, it has the advantage that the usual standard emacs word
movement and case change commands will work.


With LaTeX2e, just add @samp{\usepackage[latin1]@{inputenc@}}.  With older
LaTeX versions, try: 

@table @file
@item isolatin1.sty
Support for ISO 8859 Latin 1.  Available by ftp from the host
@t{ftp.uni-stuttgart.de} as
@file{/pub/tex/macros/latex/contrib/misc/isolatin1.sty}. 

@item latin2.sty
Support for ISO 8859 Latin 2.  Available by ftp from the host
@t{ftp.uni-stuttgart.de} as
@file{/pub/tex/macros/latex/contrib/latin2.sty}.
@end table

To be able to display non-ASCII characters you will need an appropriate
font and a version of GNU Emacs capable of displaying 8-bit characters.
I believe all emacs versions except plain Emacs 18 are capable of this.
For GNU Emacs 19, @pxref{European Display,,,emacs, The GNU Emacs
Editor}.  

A compromise is to use use an European character set when editing the
file, and convert to @TeX{} macros when reading and writing the files.

@table @file
@item iso-cvt.el
@cindex @file{iso-cvt.el}
Much like @file{iso-tex.el} but is bundled with Emacs 19.23 and later.

@item x-compose.el
@cindex @file{x-compose.el}
Similar package bundled with new versions of XEmacs.

@end table

AUC @TeX{} supports style files for several languages.  Each style file
may modify some AUC @TeX{} to better support the language, and will run
a language specific hook that will allow you to for example change
ispell dictionary, or run code to change the keyboard remapping.  The
following will for example choose a Danish dictionary for documents
including the @file{dk.sty} file.  This requires parsing to be enabled,
@pxref{Parsing Files}. 

@lisp
(add-hook 'TeX-language-dk-hook
          (function (lambda () (ispell-change-dictionary "danish"))))
@end lisp

The following style files are recognized.
@table @file
@item dk
Runs style hook @code{TeX-language-dk-hook}.

@item dutch
Runs style hook @code{TeX-language-nl-hook}.

@item german
Runs style hook @code{TeX-language-de-hook}.
Gives  @samp{"} word syntax and makes the @key{"} key insert a literal
@samp{"}.  

@item plfonts
@itemx plhb
Runs style hook @code{TeX-language-pl-hook}.
Gives  @samp{"} word syntax and makes the @key{"} key insert a literal
@samp{"}.  Pressing @key{"} twice will insert @samp{"<} or @samp{">}
depending on context.
@end table

@node Japanese,  , European, I18n
@section Japanese @TeX{} 
@cindex Japan
@cindex Japanese
@cindex Nippon
@cindex NEMACS
@cindex MULE
@cindex j@TeX{}
@cindex jLa@TeX{}

To write Japanese text with AUC @TeX{} you need to have versions of
@TeX{} and Emacs that support Japanese.  There exist at least two
variants of @TeX{} for Japanese text, and AUC @TeX{} can be used with
both, as well as with the two Japanese-aware Emacses, NEMACS and MULE.

To use the Japanese TeX variants, simply enter @code{japanese-tex-mode},
@code{japanese-latex-mode}, or @code{japanese-slitex-mode}, and
everything should work.  If not, send mail to Shinji Kobayashi
(@samp{<koba@@flab.fujitsu.co.jp>}, who kindly donated the code for
supporting Japanese in AUC @TeX{}.  None of the primary AUC @TeX{}
maintainers understand Japanese, so they can not help you.

@node Automatic, Style Files, I18n, top
@chapter Automatic Customization
@cindex Automatic Customization
@cindex Extracting @TeX{} symbols
@cindex Automatic
@cindex @file{auto} directories. 
@cindex Parsing @TeX{}
@cindex @TeX{} parsing
@cindex Generating symbols

Since AUC @TeX{} is so highly customizable, it makes sense that it is able
to customize itself.  The automatic customization consists of scanning
@TeX{} files and extracting symbols, environments, and things like that.

The automatic customization is done on three different levels.  The
global level is the level shared by all users at your site, and consists
of scanning the standard @TeX{} style files, and any extra styles added
locally for all users on the site.  The private level deals with those
style files you have written for your own use, and use in different
documents.  You may have a @file{~/lib/TeX/} directory where you store
useful style files for your own use.  The local level is for a specific
directory, and deals with writing customization for the files for your
normal @TeX{} documents.

If compared with the environment variable @code{TEXINPUTS}, the
global level corresponds to the directories built into @TeX{}.  The
private level corresponds to the directories you add yourself, except for
@file{.}, which is the local level.

@menu
* Automatic Global::            Automatic Customization for the Site
* Automatic Private::           Automatic Customization for a User
* Automatic Local::             Automatic Customization for a Directory
@end menu

By default AUC @TeX{} will search for customization files in all the
global, private, and local style directories, but you can also set the
path directly.  This is useful if you for example want to add another
person's style hooks to your path.  Please note that all matching files
found in @code{TeX-style-path} are loaded, and all hooks defined in the
files will be executed.

@defopt TeX-style-path
List of directories to search for AUC @TeX{} style files.  
Each must end with a slash.
@end defopt

By default, when AUC @TeX{} searches a directory for files, it will
recursively search through subdirectories. 

@defopt TeX-file-recurse
Whether to search @TeX{} directories recursively: nil means do not
recurse, a positive integer means go that far deep in the directory
hierarchy, t means recurse indefinitely.
@end defopt

By default, AUC @TeX{} will ignore files name @file{.}, @file{..},
@file{SCCS}, @file{RCS}, and @file{CVS}.

@defopt TeX-ignore-file 
Regular expression matching file names to ignore.

These files or directories will not be considered when searching for
@TeX{} files in a directory.
@end defopt

@node Automatic Global, Automatic Private, Automatic, Automatic
@section Automatic Customization for the Site
@cindex Global style hook directory
@cindex Global macro directory
@cindex Site macro directory
@cindex Global @TeX{} macro directory
@cindex Site @TeX{} macro directory
@cindex Global directories
@cindex Site information

Assuming that the automatic customization at the global level was done
when AUC @TeX{} was installed, your choice is now: will you use it?  If
you use it, you will benefit by having access to all the symbols and
environments available for completion purposes.  The drawback is slower
load time when you edit a new file and perhaps too many confusing
symbols when you try to do a completion.

You can disable the automatic generated global style hooks by setting
the variable @code{TeX-auto-global} to nil.

@defopt TeX-macro-global
Directories containing the site's @TeX{} style files.
@end defopt 

@defopt TeX-style-global
Directory containing hand generated @TeX{} information.
Must end with a slash.

These correspond to @TeX{} macros shared by all users of a site.
@end defopt

@defopt TeX-auto-global
Directory containing automatically generated information.

For storing automatic extracted information about the @TeX{} macros
shared by all users of a site.
@end defopt

@node Automatic Private, Automatic Local, Automatic Global, Automatic
@section Automatic Customization for a User
@cindex Private style hook directory
@cindex Private macro directory
@cindex Personal macro directory
@cindex Private @TeX{} macro directory
@cindex Personal @TeX{} macro directory
@cindex Private directories
@cindex Personal information

You should specify where you store your private @TeX{} macros, so AUC
@TeX{} can extract their information.  The extracted information will go
to the directories listed in @code{TeX-auto-private}

Use @kbd{M-x TeX-auto-generate} to extract the information.

@defopt TeX-macro-private
Directories where you store your personal @TeX{} macros.
Each must end with a slash.

This defaults to the directories listed in the @samp{TEXINPUTS} and
@samp{BIBINPUTS} environment variables.
@end defopt

@defopt TeX-auto-private
List of directories containing automatically generated information.
Must end with a slash.

These correspond to the personal @TeX{} macros.
@end defopt

@deffn Command TeX-auto-generate @var{TEX} @var{AUTO}
(@kbd{M-x TeX-auto-generate}) Generate style hook for @var{TEX} and
store it in @var{AUTO}.  If @var{TEX} is a directory, generate style
hooks for all files in the directory.@refill
@end deffn

@defopt TeX-style-private
List of directories containing hand generated information.
Must end with a slash.

These correspond to the personal @TeX{} macros.
@end defopt

@node Automatic Local,  , Automatic Private, Automatic
@section Automatic Customization for a Directory
@cindex Local style hooks
@cindex Updating style hooks
@cindex Automatic updating style hooks
@cindex Local style hooks
@cindex Local style directory

AUC @TeX{} can update the style information about a file each time you
save it, and it will do this if the directory @code{TeX-auto-local}
exist. @code{TeX-auto-local} is by default set to @samp{"auto/"}, so
simply creating an @file{auto} directory will enable automatic saving of
style information. 

The advantage of doing this is that macros, labels, etc. defined in any
file in a multifile document will be known in all the files in the
document.  The disadvantage is that saving will be slower.  To disable,
set @code{TeX-auto-local} to nil.

@defopt TeX-style-local
Directory containing hand generated @TeX{} information.
Must end with a slash.

These correspond to @TeX{} macros found in the current directory.
@end defopt

@defopt TeX-auto-local
Directory containing automatically generated @TeX{} information.
Must end with a slash.

These correspond to @TeX{} macros found in the current directory.
@end defopt

@node Style Files, Installation, Automatic, top
@chapter Writing Your own Style Support
@cindex Style files
@cindex Style hooks
@cindex @file{style}

@xref{Automatic}, for a discussion about automatically generated global,
private, and local style files.  The hand generated style files are
equivalent, except that they by default are found in @file{style}
directories instead of @file{auto} directories. 

@menu
* Simple Style::                A Simple Style File
* Adding Macros::               Adding Support for Macros
* Adding Environments::         Adding Support for Environments
* Adding Other::                Adding Other Information
* Hacking the Parser::          Automatic Extraction of New Things
@end menu

If you write some useful support for a public @TeX{} style file, please
send it to us.

@node Simple Style, Adding Macros, Style Files, Style Files
@section A Simple Style File
@cindex @file{book.el}
@cindex Sample style file
@cindex Style file
@cindex Example of a style file.
@cindex Style hook
@cindex Adding a style hook

Here is a simple example of a style file.

@lisp
;;; book.el - Special code for book style.

(TeX-add-style-hook "book"
 (function (lambda () (setq LaTeX-largest-level
                            (LaTeX-section-level ("chapter"))))))

@end lisp

This file specifies that the largest kind of section in a LaTeX document
using the book document style is chapter.  The interesting thing to
notice is that the style file defines an (anonymous) function, and adds it
to the list of loaded style hooks by calling @code{TeX-add-style-hook}.

The first time the user indirectly tries to access some style specific
information, such as the largest sectioning command available, the style
hooks for all files directly or indirectly read by the current document
is executed.  The actual files will only be evaluated once, but the
hooks will be called for each buffer using the style file.

@defun TeX-add-style-hook @var{style} @var{hook}
Add @var{hook} to the list of functions to run when we use the @TeX{}
file @var{style}.
@end defun

@node Adding Macros, Adding Environments, Simple Style, Style Files
@section Adding Support for Macros
@cindex Adding macros
@cindex Macros, adding
@cindex Defining macros in style hooks

The most common thing to define in a style hook is new symbols (@TeX{}
macros).  Most likely along with a description of the arguments to the
function, since the symbol itself can be defined automatically.

Here are a few examples from @file{latex.el}.

@lisp
(TeX-add-style-hook "latex"
 (function
  (lambda ()
     (TeX-add-symbols
     '("arabic" TeX-arg-counter)
     '("label" TeX-arg-define-label)
     '("ref" TeX-arg-label)
     '("newcommand" TeX-arg-define-macro [ "Number of arguments" ] t)
     '("newtheorem" TeX-arg-define-environment
       [ TeX-arg-environment "Numbered like" ]
       t [ TeX-arg-counter "Within counter" ])))))
@end lisp

@defun TeX-add-symbols @var{symbol} @dots{}
Add each @var{symbol} to the list of known symbols.
@end defun

Each argument to @code{TeX-add-symbols} is a list describing one symbol.
The head of the list is the name of the symbol, the remaining elements
describe each argument.

If there are no additional elements, the symbol will be inserted with
point inside braces.  Otherwise, each argument of this function should
match an argument of the @TeX{} macro.  What is done depends on the argument
type.

If a macro is defined multiple times, AUC @TeX{} will chose the one with
the longest definition (i.e. the one with the most arguments).

Thus, to overwrite
@example
        '("tref" 1) ; one argument
@end example
you can specify 
@example
        '("tref" TeX-arg-label ignore) ; two arguments
@end example

@code{ignore} is a function that does not do anything, so when you
insert a @samp{tref} you will be prompted for a label and no more.

@table @code
@item string
Use the string as a prompt to prompt for the argument.

@item number
Insert that many braces, leave point inside the first.

@item nil
Insert empty braces.

@item t
Insert empty braces, leave point between the braces.

@item other symbols
Call the symbol as a function.  You can define your
own hook, or use one of the predefined argument hooks.

@item list
If the car is a string, insert it as a prompt and the next
element as initial input.  Otherwise, call the car of the list with
the remaining elements as arguments. 

@item vector
Optional argument.  If it has more than one element, parse it
as a list, otherwise parse the only element as above.  Use square
brackets instead of curly braces, and is not inserted on empty user
input.
@end table

A lot of argument hooks have already been defined.  The first argument to
all hooks is a flag indicating if it is an optional argument.  It is up
to the hook to determine what to do with the remaining arguments, if
any.  Typically the next argument is used to overwrite the default
prompt. 

@ftable @code
@item TeX-arg-conditional
Implements if EXPR THEN ELSE.  If EXPR evaluates to true, parse THEN as an
argument list, else parse ELSE as an argument list.

@item TeX-arg-literal
Insert its arguments into the buffer.  Used for specifying extra syntax
for a macro.

@item TeX-arg-free
Parse its arguments but use no braces when they are inserted.

@item TeX-arg-eval
Evaluate arguments and insert the result in the buffer.

@item TeX-arg-file
Prompt for a tex or sty filename, and use it without the extension. Run
the file hooks defined for it.

@item TeX-arg-label
Prompt for a label completing with known labels.

@item TeX-arg-macro
Prompt for a @TeX{} macro with completion.

@item TeX-arg-environment
Prompt for a La@TeX{} environment with completion.

@item TeX-arg-cite
Prompt for a Bib@TeX{} citation.

@item TeX-arg-counter
Prompt for a La@TeX{} counter.

@item TeX-arg-savebox
Prompt for a La@TeX{} savebox.

@item TeX-arg-file
Prompt for a filename in the current directory, and use it without the
extension.

@item TeX-arg-input-file
Prompt for a filename in the current directory, and use it without the
extension.  Run the style hooks for the file.

@item TeX-arg-define-label
Prompt for a label completing with known labels.  Add label to list of
defined labels.

@item TeX-arg-define-macro
Prompt for a @TeX{} macro with completion.  Add macro to list of defined
macros.

@item TeX-arg-define-environment
Prompt for a La@TeX{} environment with completion.  Add environment to
list of defined environments.

@item TeX-arg-define-cite
Prompt for a Bib@TeX{} citation.

@item TeX-arg-define-counter
Prompt for a La@TeX{} counter.

@item TeX-arg-define-savebox
Prompt for a La@TeX{} savebox.

@item TeX-arg-corner
Prompt for a La@TeX{} side or corner position with completion.

@item TeX-arg-lr
Prompt for a La@TeX{} side with completion.

@item TeX-arg-tb
Prompt for a La@TeX{} side with completion.

@item TeX-arg-pagestyle
Prompt for a La@TeX{} pagestyle with completion.

@item TeX-arg-verb
Prompt for delimiter and text.

@item TeX-arg-pair
Insert a pair of numbers, use arguments for prompt. The numbers are
surrounded by parentheses and separated with a comma.

@item TeX-arg-size
Insert width and height as a pair.  No arguments.

@item TeX-arg-coordinate
Insert x and y coordinates as a pair.  No arguments.
@end ftable

If you add new hooks, you can assume that point is placed directly after
the previous argument, or after the macro name if this is the first
argument.  Please leave point located after the argument you are
inserting.  If you want point to be located somewhere else after all
hooks have been processed, set the value of @code{exit-mark}.  It will
point nowhere, until the argument hook sets it.@refill

@node Adding Environments, Adding Other, Adding Macros, Style Files
@section Adding Support for Environments
@cindex Adding environments
@cindex Environments, adding
@cindex Defining environments in style hooks

Adding support for environments is very much like adding support for
@TeX{} macros, except that each environment normally only takes one
argument, an environment hook.  The example is again a short version of
@file{latex.el}.

@lisp
(TeX-add-style-hook "latex"
 (function
  (lambda ()
    (LaTeX-add-environments
     '("document" LaTeX-env-document)
     '("enumerate" LaTeX-env-item)
     '("itemize" LaTeX-env-item)
     '("list" LaTeX-env-list)))))
@end lisp 

@findex LaTeX-env-item
The only hook that is generally useful is @code{LaTeX-env-item}, which is
used for environments that contain items.  It is completely up to the
environment hook to insert the environment, but the function
@code{LaTeX-insert-environment} may be of some help.  The hook will be
called with the name of the environment as its first argument, and extra
arguments can be provided by adding them to a list after the hook.

For simple environments with arguments, for example defined with
@samp{\newenvironment}, you can make AUC @TeX{} prompt for the arguments
by giving the prompt strings in the call to
@code{LaTeX-add-environments}.  For example, if you have defined a
@code{loop} environment with the three arguments @var{from}, @var{to},
and @var{step}, you can add support for them in a style file.

@example
%% loop.sty

\newenvironment@{loop@}[3]@{...@}@{...@}
@end example

@lisp
;; loop.el

(TeX-add-style-hook "loop"
 (function
  (lambda ()
    (LaTeX-add-environments
     '("loop" "From" "To" "Step")))))
@end lisp

If an environment is defined multiple times, AUC @TeX{} will chose the
one with the longest definition.  Thus, if you have an enumerate style
file, and want it to replace the standard La@TeX{} enumerate hook above,
you could define an @file{enumerate.el} file as follows, and place it in
the appropriate style directory. 

@lisp
(TeX-add-style-hook "latex"
 (function
  (lambda ()
    (LaTeX-add-environments
     '("enumerate" LaTeX-env-enumerate foo)))))

(defun LaTeX-env-enumerate (environment &optional ignore) ...)
@end lisp

The symbol @code{foo} will be passed to @code{LaTeX-env-enumerate} as
the second argument, but since we only added it to overwrite the
definition in @file{latex.el} it is just ignored.

@defun LaTeX-add-environments @var{env} @dots{}
Add each @var{env} to list of loaded environments.
@end defun

@defun LaTeX-insert-environment @var{env} [ @var{extra} ]
Insert environment of type @var{env}, with optional argument @var{extra}.
@end defun

@node Adding Other, Hacking the Parser, Adding Environments, Style Files
@section Adding Other Information
@cindex Adding bibliographies
@cindex Bibliographies, adding
@cindex Defining bibliographies in style hooks
@cindex Adding labels
@cindex Labels, adding
@cindex Defining labels in style hooks
@cindex Adding other information
@cindex Other information, adding
@cindex Defining other information in style hooks

You can also specify bibliographical databases and labels in the style
file.  This is probably of little use, since this information will
usually be automatically generated from the @TeX{} file anyway.

@defun LaTeX-add-bibliographies @var{bibliography} @dots{}
Add each @var{bibliography} to list of loaded bibliographies.
@end defun

@defun LaTeX-add-labels @var{label} @dots{}
Add each @var{label} to the list of known labels.
@end defun

@node Hacking the Parser,  , Adding Other, Style Files
@section Automatic Extraction of New Things
@cindex Parsing new macros
@cindex @file{macro.tex}
@cindex @file{macro.el}
@cindex Changing the parser

The automatic @TeX{} information extractor works by searching for
regular expressions in the @TeX{} files, and storing the matched
information.  You can add support for new constructs to the parser,
something that is needed when you add new commands to define symbols.  

For example, in the file @file{macro.tex} I define the following macro.

@example
\newcommand@{\newmacro@}[5]@{%
\def#1@{#3\index@{#4@@#5~cite@{#4@}@}\nocite@{#4@}@}%
\def#2@{#5\index@{#4@@#5~cite@{#4@}@}\nocite@{#4@}@}%
@}
@end example

AUC @TeX{} will automatically figure out that @samp{newmacro} is a macro
that takes five arguments.  However, it is not smart enough to
automatically see that each time we use the macro, two new macros are
defined.  We can specify this information in a style hook file.

@lisp
;;; macro.el - Special code for my own macro file.

;;; Code:

(defvar TeX-newmacro-regexp
  '("\\\\newmacro@{\\\\\\([a-zA-Z]+\\)@}@{\\\\\\([a-zA-Z]+\\)@}"
    (1 2) TeX-auto-multi)
  "Matches \newmacro definitions.")

(defvar TeX-auto-multi nil
  "Temporary for parsing \\newmacro definitions.")

(defun TeX-macro-cleanup ()
  ;; Move symbols from `TeX-auto-multi' to `TeX-auto-symbol'.
  (mapcar (function (lambda (list)
            (mapcar (function (lambda (symbol)
                      (setq TeX-auto-symbol
                            (cons symbol TeX-auto-symbol))))
                    list)))
          TeX-auto-multi))

(defun TeX-macro-prepare ()
  ;; Clear `Tex-auto-multi' before use.
  (setq TeX-auto-multi nil))

(add-hook 'TeX-auto-prepare-hook 'TeX-macro-prepare)
(add-hook 'TeX-auto-cleanup-hook 'TeX-macro-cleanup)

(TeX-add-style-hook "macro"
 (function
  (lambda ()
    (TeX-auto-add-regexp TeX-newmacro-regexp)
    (TeX-add-symbols '("newmacro"
                       TeX-arg-macro
                       (TeX-arg-macro "Capitalized macro: \\")
                       t
                       "BibTeX entry: "
                       nil)))))

;;; macro.el ends here
@end lisp

When this file is first loaded, it adds a new entry to
@code{TeX-newmacro-regexp}, and defines a function to be called before
the parsing starts, and one to be called after the parsing is done.  It
also declares a variable to contain the data collected during parsing.
Finally, it adds a style hook which describes the @samp{newmacro} macro,
as we have seen it before.

So the general strategy is: Add a new entry to @code{TeX-newmacro-regexp}.
Declare a variable to contain intermediate data during parsing.  Add hook
to be called before and after parsing.  In this case, the hook before
parsing just initializes the variable, and the hook after parsing
collects the data from the variable, and adds them to the list of symbols
found.  

@defvar TeX-auto-regexp-list
List of regular expressions matching @TeX{} macro definitions.

The list has the following format ((REGEXP MATCH TABLE) @dots{}), that
is, each entry is a list with three elements.

REGEXP.  Regular expression matching the macro we want to parse.

MATCH.  A number or list of numbers, each representing one
parenthesized subexpression matched by REGEXP.

TABLE.  The symbol table to store the data.  This can be a function, in
which case the function is called with the argument MATCH.  Use
@code{TeX-match-buffer} to get match data.  If it is not a function, it
is presumed to be the name of a variable containing a list of match
data.  The matched data (a string if MATCH is a number, a list of
strings if MATCH is a list of numbers) is put in front of the table.
@end defvar

@defvar TeX-auto-prepare-hook nil
List of functions to be called before parsing a @TeX{} file.
@end defvar

@defvar TeX-auto-cleanup-hook nil
List of functions to be called after parsing a @TeX{} file.
@end defvar

@node Installation, History, Style Files, top
@include install.texi

@node History, Projects, Installation, top
@comment  node-name,  next,  previous,  up
@appendix The History of AUC @TeX{}

See the file @file{history.texi} for older changes.  

@include changes.texi

@node Projects, Credit, History, top
@comment  node-name,  next,  previous,  up
@appendix Wishlist

This is a list of projects for AUC @TeX{}.  Bug reports and requests we
can not fix or honor right away will be added to this list.  If you have
some time for emacs lisp hacking, you are encouraged to try to provide a
solution to one of the following problems.  It might be a good idea to
mail me first, though.

@itemize @bullet
@item
Page count when compiling should (optionally) go to modeline of the
window where the compilation command was invoked, instead of the output
window.  Suggested by Karsten Tinnefeld
<tinnefeld@@irb.informatik.uni-dortmund.de>.

@item
Command to insert a macrodefinition in the preamble, without moving
point from the current location.  Suggested by 
"Jeffrey C. Ely" <ely@@nwu.edu>.

@item
Filling messes up comments, but only at the end of the file.  Reported
by Juergen Reiss <psy3022@@rzbox.uni-wuerzburg.de>.

@item
@kbd{C-c C-q C-e} doesn't work properly on nested itemize environments.
Reported by  "Robert B. Love"  <rlove@@raptor.rmNUG.ORG>.

@item 
One suggestion for AUC-TeX: I think that the font command C-c C-f C-r,
which produces \textrm@{@} in a LaTeX file, should instead produce
either \textrm@{@} or \mathrm@{@}, depending on whether one is in math
mode or not. --- John Palmieri <palmieri@@math.mit.edu>

@item
A way to add and overwrite math mode entries in style files, and to
decide where they should be.  Suggested by Remo Badii <Remo.Badii@@psi.ch>.

@item
Create template for (first) line of tabular environment.

@item
I think prompting for the master is the intended behaviour.  It
corresponds to a `shared' value for TeX-master.

There should probably be a `none' value which wouldn't query for the
master, but instead disable all features that relies on TeX-master.

This default value for TeX-master could then be controled with mapping
based on the extension.

@item
@kbd{C-c '} should alway stay in the current window, also when it find a
new file.

@item
@code{LaTeX-fill-environment} does not indent the closing @samp{\end}.

@item
Rewrite @file{ltx-help.el} and put it in @file{latex.el}.  Fix also:
@example
From: Denby Wong <DnB@@slip224.qlink.QueensU.CA>

 1) change documentation regarding where to get the 
    latest version (at CTAN at pip.shsu.edu for me)
    under info/latex2e-help-texinfo/

 2) change or provide choice over which version to
    use.  There are three references to the info
    node "(latex)" in the file which should be 
    "(latex2e)"  for the new file.  

From: Piet van Oostrum <piet@@cs.ruu.nl>

One of the annoying things of latex-help is that if you ask for \LARGE, you
get \large if you have case-fold-search=t. This is really info's problem as
it doesn't reset it for a search of the node, but it would be easy to stick
a (let (case-fold-search) in latex-help.
@end example

@item
It should be possible to insert a default preamble containing
e.g. @code{usepackage} declarations, perhaps depending on the document
class. 

@item
Multiple argument completion for @samp{\bibliography}.  In general, I
ought to make @kbd{,} special for these kind of completions. 

@item
Do not overwrite emacs warnings about existing auto-save files when
loading a new file.

@item
Suggest @samp{makindex} when appropriate.

@item
Maybe the regexp for matching a TeX symbol during parsing should be
@samp{"\\\\\\([a-zA-Z]+\\|.\\)"} ---
@samp{<thiemann@@informatik.uni-tuebingen.de>} Peter Thiemann.

@item
AUC TeX should be able to parse La@TeX{}2e @file{.cls} files.  Here are
the regexps by @samp{<thiemann@@informatik.uni-tuebingen.de>} Peter
Thiemann. 

@example
     ("\\\\DeclareRobustCommand@{?\\\\\\([a-zA-Z]+\\)@}?\\[\\([0-9]+\\)\\]\
\\[\\([^\]\\\\\n\r]+\\)\\]"
      (1 2 3) LaTeX-auto-optional)
     ("\\\\DeclareRobustCommand@{?\\\\\\([a-zA-Z]+\\)@}?\\[\\([0-9]+\\)\\]"
      (1 2) LaTeX-auto-arguments)
     ("\\\\DeclareRobustCommand@{?\\\\\\([a-zA-Z]+\\)@}?" 1 TeX-auto-symbol)
     ("\\\\DeclareFixedFont@{?\\\\\\([a-zA-Z]+\\)@}?"
      1 TeX-auto-symbol)
     ("\\\\Declare\\(Text\\|Old\\)FontCommand@{?\\\\\\([a-zA-Z]+\\)@}?"
      2 TeX-auto-symbol)
     ("\\\\DeclareMath\\(Symbol\\|Delimiter\\|Accent\\|Radical\\)@{?\\\\\\([a-zA-Z]+\\)@}?"
      2 TeX-auto-symbol)
     ;;; it is also valid to declare just a single symbol, e.g. <,
     ;;; with \DeclareMathSymbol but it is not necessary to register that here
     ("\\\\DeclareText\\(Command\\|Symbol\\|Accent\\|Composite\\)@{?\\\\\\([a-zA-Z]+\\)@}?"
      2 TeX-auto-symbol)
@end example

@item
Use index files (when available) to speed up @kbd{C-c C-m include
@key{RET}}. 

@item
Option not to calculate very slow completions like for 
@kbd{C-c C-m include @key{RET}}.@refill

@item
AUC @TeX{} should not parse verbatim environments.

@item
Font menu should be created from @code{TeX-font-list}.

@item
Installation procedure written purely in emacs lisp.

@item
Format La@TeX{} comment blocks.

@item
Included PostScript files should also be counted as part of the
document. 

@item
The argument to @samp{\verb} may be broken when filling if it contains a
space.  This should be fixed or documented.  Suggested by several
people.

@item
The parser should catch warnings about undefined crossreferences.
Suggested by Richard Hirsch @samp{i3080501@@ws.rz.tu-bs.de}.

@item
A nice hierarchical by-topic organization of all officially documented
LaTeX macros, available from the menu bar.

@item
Make @samp{`} check for math context in @code{LaTeX-math-mode}. and
simply self insert if not in a math context.

@item
Make @code{TeX-insert-dollar} more robust.  Currently it can be fooled
by @samp{\mbox}'es and escaped double dollar for example.

@item
La@TeX{} formatting should skip @code{verbatim} environments.

@item
@code{TeX-command-default} should be set from the master file, if not
set locally.  Suggested by Peter Whaite @samp{<peta@@cim.mcgill.ca>}.

@item
Make AUC @TeX{} work with @samp{crypt++}.  Suggested by Chris Moore
@samp{<Chris.Moore@@src.bae.co.uk>}.

@item
Fix bug with @code{TeX-show-environment} from hidden document
environment.

@item
Function to check if you are in math mode (between two dollar signs).
Suggested by Jan Erik Odegard @samp{<odegard@@dsp.rice.edu>}

@item
The @samp{Spell} command should apply to all files in a document.  Maybe
it could try to restrict to files that have been modified since last
spell check?  Suggested by Ravinder Bhumbla @samp{<rbhumbla@@ucsd.edu>}. 

@item
Make @key{.} check for abbreviations and sentences ending with capital
letters.

@item
Use Emacs 19 minibuffer history to choose between previewers, and other
stuff.  Suggested by John Interrante
@samp{<interran@@uluru.Stanford.EDU>}. 

@item 
Make features.

A new command @code{TeX-update} (@kbd{C-c C-u}) could be used to create
an up-to-date dvi file by repeatedly running Bib@TeX{}, MakeIndex and
(La)@TeX{}, until an error occurs or we are done.

An alternative is to have an @samp{Update} command that ensures the
@samp{dvi} file is up to date.  This could be called before printing and
previewing.

@item
Documentation of variables that can be set in a style hook.

We need a list of what can safely be done in an ordinary style hook.
You can not set a variable that AUC TeX depends on, unless AUC TeX knows
that it has to run the style hooks first.

Here is the start of such a list.
@table @code

@item LaTeX-add-environments

@item TeX-add-symbols

@item LaTeX-add-labels

@item LaTeX-add-bibliographies

@item LaTeX-largest-level

@end table

@item 
Correct indentation for tabular, tabbing, table, math, and array
environments.

@item 
Optional special indentation after an @samp{\item}.

@example
\begin@{itemize@}
\item blabalaskdfjlas lajf adf
      lkfjl  af jasl lkf jlsdf jlf 
\item f lk jldjf lajflkas flf af
\end@{itemize@}
@end example 

@item
Completion for counters and sboxes.

@item
Outline should be (better) supported in @TeX{} mode.

At least, support headers, trailers, as well as TeX-outline-extra. 

@item
@code{TeX-header-start} and @code{TeX-trailer-end}.

We might want these, just for fun (and outlines)

@item
Plain @TeX{} and La@TeX{} specific header and trailer expressions.

We should have a way to globally specify the default value of the header
and trailer regexps. 

@item
Add support for original @code{TeX-mode} keybindings.

A third initialization file (@file{tex-mode.el}) containing an emulator
of the standard @code{TeX-mode} would help convince some people to
change to AUC @TeX{}.@refill

@item
Make @code{TeX-next-error} parse ahead and store the results in a list,
using markers to remember buffer positions in order to be more robust
with regard to line numbers and changed files.  This is what
@code{next-error} does. (Or did, until Emacs 19).

@item
When @code{LaTeX-environment} is given an argument, change the current
environment.  Be smart about @samp{\item[]} versus @samp{\item } and
labels like @samp{fig:} versus @samp{tab:}.

@item
Check out if lightning completion from Ultra @TeX{} is anything for us.

@item
Finish the @TeX{}info mode.  For one thing, many @TeX{}info mode
commands do not accept braces around their arguments.

@item
BibTeX mode.

@item
Support for AMSLaTeX style files.

@item
Hook up the letter environment with `bbdb.el'.

@item
Make the letter environment hook produce `documentstyle' too.

@end itemize

@node Credit, Key Index, Projects, top
@comment node-name,  next,  previous,  up
@appendix Credit 

A big smile and thanks should go to all the folks who cheered me up,
during the long hours of programming@dots{} sorry folks, but I can't help
including the list below, of comments I've got@dots{}

Kresten Krab Thorup

@table @samp
@item <monheit@@psych.stanford.edu>
I'd like to say that I'm very much enjoying using auc-tex.  Thanks for
the great package!
@item <georgiou@@rex.cs.tulane.edu>
I really enjoy working with auc-tex.
@item <toy@@soho.crd.ge.com>
Thanks for your great package.  It's indispensable now!  Thanks!
@item <ascott@@gara.une.oz.au>
Thanks for your time and for what appears to be a great and useful
package.  Thanks again
@item <hal@@alfred.econ.lsa.umich.edu>
Thanks for providing auc-tex.
@item <simons@@ibiza.karlsruhe.gmd.de>
I really enjoy using the new emacs TeX-mode you wrote.  I think you did
a great job.
@item <clipper@@csd.uwo.ca>
I am having fun with auc-tex already.
@item <ibekhaus@@athena.mit.edu>
Thanks for your work on auc-tex, especially the math-minor mode.
@item <burt@@dfki.uni-kl.de>
I like your auc-tex elisp package for writing LaTeX files - I am
especially impressed by the help with error correction.
@item <goncal@@cnmvax.uab.es>
Thanks so much!
@item <bond@@sce.carleton.ca>
I >really< like the macro, particularly the hooks for previewing and the
error parsing!
@item <ascott@@gara.une.oz.au>
All in all I am pleased with your package.  Thanks a lot.
@end table

@node Key Index, Function Index, Credit, top
@comment    node-name,         next,       previous, up
@unnumbered Key Index

@printindex ky

@node Function Index, Variable Index, Key Index, top
@comment    node-name,         next,       previous, up
@unnumbered Function Index

@printindex fn

@node Variable Index, Concept Index, Function Index, top
@comment    node-name,         next,       previous, up
@unnumbered Variable Index

@printindex vr

@node Concept Index,  , Variable Index, top
@comment      node-name, next,       previous, up
@unnumbered Concept Index

@printindex cp

@summarycontents
@contents
@bye


