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+;;; harvard.el --- Support for Harvard Citation style package for AUCTeX.  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 1994, 1997, 2005, 2012, 2014, 2020 Free Software Foundation, Inc.
+
+;; Author: Berwin Turlach <statba@nus.edu.sg>
+;; Maintainer: auctex-devel@gnu.org
+;; 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 St, Fifth Floor, Boston, MA
+;; 02110-1301, USA.
+
+;;; Code:
+
+(require 'tex)
+(require 'latex)
+
+(TeX-add-style-hook
+ "harvard"
+ (lambda ()
+
+   (LaTeX-add-environments
+    '("thebibliography" LaTeX-env-harvardbib ignore))
+
+   (TeX-add-symbols
+    "harvardand"
+    '("citeasnoun"
+      (TeX-arg-conditional TeX-arg-cite-note-p ([ "Note" ]) nil)
+      TeX-arg-cite)
+    '("possessivecite"
+      (TeX-arg-conditional TeX-arg-cite-note-p ([ "Note" ]) nil)
+      TeX-arg-cite)
+    '("citeaffixed"
+      (TeX-arg-conditional TeX-arg-cite-note-p ([ "Note" ]) nil)
+      TeX-arg-cite "Affix")
+    '("citeyear"
+      (TeX-arg-conditional TeX-arg-cite-note-p ([ "Note" ]) nil)
+      TeX-arg-cite)
+    '("citename"
+      (TeX-arg-conditional TeX-arg-cite-note-p ([ "Note" ]) nil)
+      TeX-arg-cite)
+    '("citationstyle"
+      (TeX-arg-eval completing-read "Citation style: " '(("agsm") ("dcu"))))
+    '("citationmode"
+      (TeX-arg-eval completing-read "Citation mode: "
+                    '(("full") ("abbr") ("default"))))
+    '("harvardparenthesis"
+      (TeX-arg-eval completing-read "Harvardparenthesis: "
+                    '(("round") ("curly") ("angle") ("square"))))
+    '("bibliographystyle"
+      (TeX-arg-eval
+       completing-read "Bibliography style: "
+       '(("agsm") ("apsr") ("dcu") ("jmr") ("jphysicsB") ("kluwer") ("nederlands") ("econometrica")))
+      ignore)
+    '("harvarditem" [ "Short citation" ]
+      "Complete citation" "Year" TeX-arg-define-cite))
+
+   (setq TeX-complete-list
+         (append '(("\\\\citeasnoun\\[[^]\n\r\\%]*\\]{\\([^{}\n\r\\%,]*\\)"
+                    1 LaTeX-bibitem-list "}")
+                   ("\\\\citeasnoun{\\([^{}\n\r\\%,]*\\)" 1
+                    LaTeX-bibitem-list "}")
+                   ("\\\\possessivecite\\[[^]\n\r\\%]*\\]{\\([^{}\n\r\\%,]*\\)"
+                    1 LaTeX-bibitem-list "}")
+                   ("\\\\possessivecite{\\([^{}\n\r\\%,]*\\)" 1
+                    LaTeX-bibitem-list "}")
+                   ("\\\\citename\\[[^]\n\r\\%]*\\]{\\([^{}\n\r\\%,]*\\)"
+                    1 LaTeX-bibitem-list "}")
+                   ("\\\\citename{\\([^{}\n\r\\%,]*\\)" 1
+                    LaTeX-bibitem-list "}")
+                   ("\\\\citeaffixed\\[[^]\n\r\\%]*\\]{\\([^{}\n\r\\%,]*\\)"
+                    1 LaTeX-bibitem-list "}")
+                   ("\\\\citeaffixed{\\([^{}\n\r\\%,]*\\)" 1
+                    LaTeX-bibitem-list "}")
+                   ("\\\\citeaffixed{\\([^{}\n\r\\%]*,\\)\\([^{}\n\r\\%,]*\\)"
+                    2 LaTeX-bibitem-list)
+                   ("\\\\citeyear\\[[^]\n\r\\%]*\\]{\\([^{}\n\r\\%,]*\\)"
+                    1 LaTeX-bibitem-list "}")
+                   ("\\\\citeyear{\\([^{}\n\r\\%,]*\\)" 1
+                    LaTeX-bibitem-list "}")
+                   ("\\\\citeyear{\\([^{}\n\r\\%]*,\\)\\([^{}\n\r\\%,]*\\)"
+                    2 LaTeX-bibitem-list))
+                 TeX-complete-list))
+
+   (setq LaTeX-auto-regexp-list
+         (append '(("\\\\harvarditem{\\([a-zA-Z][^%#'()={}]*\\)}{\\([0-9][^, %\"#'()={}]*\\)}{\\([a-zA-Z][^, %\"#'()={}]*\\)}" 3 LaTeX-auto-bibitem)
+                   ("\\\\harvarditem\\[[^][\n\r]+\\]{\\([a-zA-Z][^%#'()={}]*\\)}{\\([0-9][^, %\"#'()={}]*\\)}{\\([a-zA-Z][^, %\"#'()={}]*\\)}" 3 LaTeX-auto-bibitem)
+                   )
+                 LaTeX-auto-regexp-list))
+
+   (setq LaTeX-item-list
+         (cons '("thebibliography" . LaTeX-item-harvardbib)
+               LaTeX-item-list))
+
+   ;; Tell RefTeX
+   (when (and LaTeX-reftex-cite-format-auto-activate
+              (fboundp 'reftex-set-cite-format))
+     (reftex-set-cite-format 'harvard)))
+ TeX-dialect)
+
+(defun LaTeX-env-harvardbib (environment &optional _ignore)
+  "Insert ENVIRONMENT with label for harvarditem."
+  (LaTeX-insert-environment environment
+                            (concat TeX-grop "xx" TeX-grcl))
+  (end-of-line 0)
+  (delete-char 1)
+  (delete-horizontal-space)
+  (LaTeX-insert-item))
+
+;; Analog to LaTeX-item-bib from latex.el
+(defun LaTeX-item-harvardbib ()
+  "Insert a new harvarditem."
+  (TeX-insert-macro "harvarditem"))
+
+(defvar LaTeX-harvard-package-options '("full" "abbr" "default"
+                                        "agsmcite" "dcucite" "round"
+                                        "curly" "angle" "square" "none")
+  "Package options for the harvard package.")
+
+;; harvard.el ends here