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+;;; overpic.el --- AUCTeX style for `overpic.sty' (v1.3)  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; Author: Arash Esbati <arash@gnu.org>
+;; Maintainer: auctex-devel@gnu.org
+;; Created: 2020-02-23
+;; 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.
+
+;;; Commentary:
+
+;; This file adds support for `overpic.sty' (v1.3) from 2020/02/22.
+;; `overpic.sty' is part of TeXLive.
+
+;;; Code:
+
+(require 'tex)
+(require 'latex)
+
+;; Silence the compiler
+(declare-function font-latex-add-keywords
+                  "font-latex"
+                  (keywords class))
+(defvar LaTeX-graphicx-key-val-options)
+(defvar LaTeX-graphicx-package-options)
+
+(defvar LaTeX-overpic-key-val-options
+  '(("abs"     ("true" "false"))
+    ("percent" ("true" "false"))
+    ("permil"  ("true" "false"))
+    ("rel")
+    ("grid"    ("true" "false"))
+    ("tics")
+    ("unit"))
+  "Key=value options for overpic macro and environments.")
+
+(defun LaTeX-arg-overpic-key-val (optional)
+  "Insert key-val for optional argument of overpic environments.
+If OPTIONAL is non-nil, insert argument in square brackets.
+
+This function is an variation of
+`LaTeX-arg-graphicx-includegraphics-key-val' where the key-val's
+in `LaTeX-overpic-key-val-options' are offered in addition to the
+ones provided by `LaTeX-graphicx-key-val-options'."
+  (let ((crm-local-completion-map
+         (remove (assoc 32 crm-local-completion-map)
+                 crm-local-completion-map))
+        (minibuffer-local-completion-map
+         (remove (assoc 32 minibuffer-local-completion-map)
+                 minibuffer-local-completion-map)))
+    (TeX-argument-insert
+     (TeX-read-key-val optional
+                       (if (and (or (and (eq TeX-engine 'default)
+                                         (not (TeX-PDF-from-DVI)))
+                                    (eq TeX-engine 'luatex))
+                                TeX-PDF-mode)
+                           (append '(("page")
+                                     ("pagebox" ("mediabox"
+                                                 "cropbox"
+                                                 "bleedbox"
+                                                 "trimbox"
+                                                 "artbox")))
+                                   LaTeX-overpic-key-val-options
+                                   LaTeX-graphicx-key-val-options)
+                         (append
+                          LaTeX-overpic-key-val-options
+                          LaTeX-graphicx-key-val-options)))
+     optional)))
+
+
+(TeX-add-style-hook
+ "overpic"
+ (lambda ()
+
+   ;; overpic.sty loads graphicx.sty
+   (TeX-run-style-hooks "graphicx")
+
+   (TeX-add-symbols
+    '("setOverpic" (TeX-arg-key-val LaTeX-overpic-key-val-options)))
+
+   (LaTeX-add-environments
+    '("overpic" LaTeX-env-args
+      [ LaTeX-arg-overpic-key-val ]
+      LaTeX-arg-includegraphics)
+
+    '("Overpic" LaTeX-env-args
+      [ LaTeX-arg-overpic-key-val ]
+      (TeX-arg-literal "{" "}")))
+
+   ;; Fontification
+   (when (and (featurep 'font-latex)
+              (eq TeX-install-font-lock 'font-latex-setup))
+     (font-latex-add-keywords '(("setOverpic" "{"))
+                              'function)))
+ TeX-dialect)
+
+(defvar LaTeX-overpic-package-options
+  (progn
+    (TeX-load-style "graphicx")
+    (append
+     LaTeX-graphicx-package-options
+     '("abs"
+       "percent"
+       "permil")))
+  "Package options for the overpic package.")
+
+;;; overpic.el ends here