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(reftex)Style Files

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Style Files

   Style files are Emacs Lisp files which are evaluated by AUCTeX in
association with the `\documentclass' and `\usepackage' commands of a
document (Note: Style Files.). 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. `amsmath.el' or `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 `\eqref', but
this will not affect other documents.

   A style hook may contain calls to `reftex-add-label-environments'(1)
which defines additions to `reftex-label-alist'.  The argument taken
by this function must have the same format as `reftex-label-alist'.
The `amsmath.el' style file of AUCTeX for example contains the

     (TeX-add-style-hook "amsmath"
        (lambda ()
          (if (fboundp 'reftex-add-label-environments)
              (reftex-add-label-environments '(AMSTeX)))))

while a package `myprop' defining a `proposition' environment with
`\newtheorem' might use

     (TeX-add-style-hook "myprop"
        (lambda ()
          (LaTeX-add-environments '("proposition" LaTeX-env-label))
          (if (fboundp 'reftex-add-label-environments)
               '(("proposition" ?p "prop:" "~\\ref{%s}" t
                                ("Proposition" "Prop.") -3))))))

   Similarly, a style hook may contain a call to
`reftex-set-cite-format' to set the citation format.  The style file
`natbib.el' for the Natbib citation style does switch RefTeX's citation
format like this:

     (TeX-add-style-hook "natbib"
        (lambda ()
          (if (fboundp 'reftex-set-cite-format)
              (reftex-set-cite-format 'natbib))))

   The hook may contain a call to `reftex-add-index-macros' to define
additional `\index'-like macros.  The argument must have the same
format as `reftex-index-macros'.  It may be a symbol, to trigger
support for one of the builtin index packages.  For example, the style
`multind.el' contains

     (TeX-add-style-hook "multind"
       (lambda ()
         (and (fboundp 'reftex-add-index-macros)
     	 (reftex-add-index-macros '(multind)))))

   If you have your own package `myindex' which defines the following
macros to be used with the LaTeX `index.sty' file

   you could write this in the style file `myindex.el':

     (TeX-add-style-hook "myindex"
        (lambda ()
           '("molec" TeX-arg-index)
           '("aindex" TeX-arg-index))
          (if (fboundp 'reftex-add-index-macros)
               '(("molec{*}" "idx" ?m "Molecules!" nil nil)
                 ("aindex{*}" "author" ?a "" nil nil))))))

   Finally the hook may contain a call to `reftex-add-section-levels'
to define additional section statements.  For example, the FoilTeX class
has just two headers, `\foilhead' and `\rotatefoilhead'.  Here is a
style file `foils.el' that will inform RefTeX about these:

     (TeX-add-style-hook "foils"
        (lambda ()
          (if (fboundp 'reftex-add-section-levels)
              (reftex-add-section-levels '(("foilhead" . 3)
                                           ("rotatefoilhead" . 3))))))

   ---------- Footnotes ----------

   (1) This used to be the function `reftex-add-to-label-alist' which
is still available as an alias for compatibility.

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