[elpa] externals/auctex ecf8b28cda 14/77: Add new style/multibib.el

[Tassilo Horn]

branch: externals/auctex
commit ecf8b28cda52734dd8e44b286e0f46d828ad5794
Author: Arash Esbati <arash@gnu.org>
Commit: Arash Esbati <arash@gnu.org>

    Add new style/multibib.el
    
    * Makefile.in (STYLESRC): Add new style.
    
    * style/multibib.el: New file.
---
 Makefile.in       |   2 +-
 style/multibib.el | 132 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 133 insertions(+), 1 deletion(-)

diff --git a/Makefile.in b/Makefile.in
index 77cb7d35a7..235b9058a1 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -181,7 +181,7 @@ STYLESRC = style/prosper.el \
           style/rotating.el  style/sidecap.el   style/l3doc.el \
           style/ifthen.el    style/etoolbox.el  style/ifetex.el \
           style/ifpdf.el     style/iftex.el     style/ifvtex.el \
-          style/ifxetex.el
+          style/ifxetex.el   style/multibib.el
 
 STYLEELC = $(STYLESRC:.el=.elc)
 
diff --git a/style/multibib.el b/style/multibib.el
new file mode 100644
index 0000000000..f3afa5c036
--- /dev/null
+++ b/style/multibib.el
@@ -0,0 +1,132 @@
+;;; multibib.el --- AUCTeX style for `multibib.sty'  -*- lexical-binding: t; 
-*-
+
+;; Copyright (C) 2022 Free Software Foundation, Inc.
+
+;; Author: Arash Esbati <arash@gnu.org>
+;; Maintainer: auctex-devel@gnu.org
+;; Created: 2022-01-18
+;; Keywords: tex
+
+;; This file is part of AUCTeX.
+
+;; AUCTeX is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3, or (at your option)
+;; any later version.
+
+;; AUCTeX is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with AUCTeX; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301 USA.
+
+;;; Commentary:
+
+;; This file adds support for `multibib.sty' v1.4 form 2008-12-10.
+
+;; Note for RefTeX users: multibib package allows multiple macro calls
+;; to load bibliography database files.  RefTeX bundled with Emacs
+;; 29.1 is adjusted to recognize this.  For prior Emacs versions, the
+;; following code in the preamble should suffice to "fool" AUCTeX and
+;; RefTeX for multiple bibliography calls:
+;;
+;;  \iffalse
+;;  \usepackage{biblatex}
+;;  \fi
+
+;;; Code:
+
+(require 'tex)
+
+;; Silence the compiler:
+(declare-function font-latex-add-keywords
+                  "font-latex"
+                  (keywords class))
+
+;; Setup for \newcites: Note that the macro is called \newcites and we
+;; choose the name newcite in order to get away with any un-natural
+;; plural form:
+(TeX-auto-add-type "multibib-newcite" "LaTeX")
+
+(defvar LaTeX-multibib-newcites-regexp
+  `(,(concat "\\\\newcites"
+             "[ \t\n\r%]*"
+             "{\\([^}]+\\)}")
+    1 LaTeX-auto-multibib-newcite)
+  "Matches the arguments of \\newcites from multibib package.")
+
+(defun LaTeX-multibib-auto-prepare ()
+  "Clear `LaTeX-auto-multibib-newcite' variables before parsing."
+  (setq LaTeX-auto-multibib-newcite nil))
+
+(defun LaTeX-multibib-auto-cleanup ()
+  "Process the parsed elements from \\newcites macro."
+  (when (LaTeX-multibib-newcite-list)
+    (let (suffix)
+      (dolist (elt (LaTeX-multibib-newcite-list))
+        (push (replace-regexp-in-string "[ %\n\r\t]" "" (car elt)) suffix))
+      (setq suffix (mapconcat #'identity suffix ","))
+      (dolist (elt (split-string suffix "," t))
+        (TeX-add-symbols
+         `(,(concat "cite" elt)
+           (TeX-arg-conditional TeX-arg-cite-note-p ([ "Note" ]) ())
+           TeX-arg-cite)
+         `(,(concat "nocite" elt) TeX-arg-cite)
+         `(,(concat "bibliographystyle" elt) TeX-arg-bibstyle)
+         `(,(concat "bibliography" elt) TeX-arg-bibliography))
+        ;; RefTeX: Check if `reftex-bibliography-commands' is bound
+        ;; and append our newly defined entry to a local version of
+        ;; it:
+        (when (boundp 'reftex-bibliography-commands)
+          (add-to-list (make-local-variable 'reftex-bibliography-commands)
+                       (concat "bibliography" elt)
+                       t))
+        ;; Fontification
+        (when (and (featurep 'font-latex)
+                   (eq TeX-install-font-lock 'font-latex-setup))
+          (font-latex-add-keywords `((,(concat "cite" elt)   "[{")
+                                     (,(concat "nocite" elt) "{")
+                                     (,(concat "bibliography" elt) "{"))
+                                   'reference)
+          (font-latex-add-keywords `((,(concat "bibliographystyle" elt) "{"))
+                                   'function))))))
+
+(add-hook 'TeX-auto-prepare-hook #'LaTeX-multibib-auto-prepare t)
+(add-hook 'TeX-auto-cleanup-hook #'LaTeX-multibib-auto-cleanup t)
+(add-hook 'TeX-update-style-hook #'TeX-auto-parse t)
+
+(TeX-add-style-hook
+ "multibib"
+ (lambda ()
+
+   ;; Add 'multibib' to the parser:
+   (TeX-auto-add-regexp LaTeX-multibib-newcites-regexp)
+
+   (TeX-add-symbols
+    '("newcites"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((suf (TeX-read-string
+                     (TeX-argument-prompt nil nil "Suffix"))))
+           (LaTeX-add-multibib-newcites suf)
+           (LaTeX-multibib-auto-cleanup)
+           (format "%s" suf))))
+      "Heading")
+    '("setbiblabelwidth" "Label"))
+
+   ;; Fontification
+   (when (and (featurep 'font-latex)
+              (eq TeX-install-font-lock 'font-latex-setup))
+     (font-latex-add-keywords '(("newcites"         "{{")
+                                ("setbiblabelwidth" "{"))
+                              'function)))
+ TeX-dialect)
+
+(defvar LaTeX-multibib-package-options '("labeled" "resetlabels")
+  "Package options for the multibib package.")
+
+;;; multibib.el ends here