Evil mode and latex support

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+;;; ntheorem.el --- AUCTeX style for `ntheorem.sty' (v1.33)  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2015-2021  Free Software Foundation, Inc.
+
+;; Author: Arash Esbati <arash@gnu.org>
+;; Maintainer: auctex-devel@gnu.org
+;; Created: 2015-10-31
+;; 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 `ntheorem.sty' (v1.33) from 2011/08/15.
+;; `ntheorem.sty' is and part of TeXLive.
+
+;; The style provides the function `LaTeX-ntheorem-env-label' which
+;; enables new defined environments with "\newtheoreom" to interact
+;; with AUCTeX and RefTeX mechanisms for inserting labels.  Check
+;; docstring of `LaTeX-ntheorem-env-label' for instructions.
+
+;;; Code
+
+(require 'crm)
+(require 'tex)
+(require 'latex)
+
+;; Silence the compiler:
+(declare-function font-latex-add-keywords
+                  "font-latex"
+                  (keywords class))
+
+(declare-function LaTeX-color-definecolor-list
+                  "color"
+                  ())
+
+(declare-function LaTeX-xcolor-definecolor-list
+                  "xcolor"
+                  ())
+
+(defvar LaTeX-ntheorem-theoremstyle-list
+  '(("plain") ("break") ("change") ("changebreak") ("margin")
+    ("marginbreak") ("nonumberplain") ("nonumberbreak") ("empty"))
+  "List of theorem styles provided by `ntheorem.el' and new ones
+defined with \"\\newtheoremstyle\".")
+
+(defvar LaTeX-ntheorem-listtype-list
+  '(("all") ("allname") ("opt") ("optname"))
+  "List of predefined formatting options available for
+\"\\theoremlisttype\" provided by `ntheorem.el' and new ones
+defined with \"\\newtheoremlisttype\".")
+
+(defvar LaTeX-ntheorem-fontdecl
+  '(;; family
+    "rmfamily" "sffamily" "ttfamily"
+    ;; series
+    "mdseries" "bfseries"
+    ;; shape
+    "upshape" "itshape" "slshape" "scshape"
+    ;; size
+    "tiny"  "scriptsize" "footnotesize"
+    "small" "normalsize" "large"
+    "Large" "LARGE" "huge" "Huge"
+    ;; reset macro
+    "normalfont")
+  "List of font declaration commands for \"\\newtheoremstyle\".")
+
+(defun LaTeX-arg-ntheorem-fontdecl (optional &optional prompt)
+  "Prompt for font declaration commands in \"\\theorem(body|header)font\".
+If OPTIONAL is non-nil, insert the resulting value as an optional
+argument.  Use PROMPT as the prompt string."
+  (let* ((crm-separator (regexp-quote TeX-esc))
+         (fontdecl (mapconcat #'identity
+                              (TeX-completing-read-multiple
+                               (TeX-argument-prompt optional prompt "Font declaration: \\" t)
+                               LaTeX-ntheorem-fontdecl)
+                              TeX-esc)))
+    (TeX-argument-insert fontdecl
+                         optional
+                         (when (and fontdecl (not (string= fontdecl "")))
+                           TeX-esc))))
+
+(defun LaTeX-ntheorem-env-label (environment)
+  "Insert ENVIRONMENT, query for an optional argument and prompt
+for label.  AUCTeX users should add ENVIRONMENT to
+`LaTeX-label-alist' via customize or in init-file with:
+
+  (add-to-list \\='LaTeX-label-alist \\='(\"lemma\" . \"lem:\"))
+
+RefTeX users should customize or add ENVIRONMENT to
+`LaTeX-label-alist' and `reftex-label-alist', for example
+
+  (add-to-list \\='LaTeX-label-alist \\='(\"lemma\" . \"lem:\"))
+  (add-to-list \\='reftex-label-alist
+               \\='(\"lemma\" ?m \"lem:\" \"~\\ref{%s}\"
+                 nil (\"Lemma\" \"lemma\") nil))"
+  (let ((opthead (TeX-read-string
+                  (TeX-argument-prompt t nil "Heading"))))
+    (LaTeX-insert-environment environment
+                              (when (and opthead
+                                         (not (string= opthead "")))
+                                (format "[%s]" opthead))))
+  (when (LaTeX-label environment 'environment)
+    (LaTeX-newline)
+    (indent-according-to-mode)))
+
+;; Setup parsing for \newtheorem
+(TeX-auto-add-type "ntheorem-newtheorem" "LaTeX")
+
+;; Setup parsing for \newtheoremstyle
+(TeX-auto-add-type "ntheorem-newtheoremstyle" "LaTeX")
+
+;; Setup parsing for \newtheoremlisttype
+(TeX-auto-add-type "ntheorem-newtheoremlisttype" "LaTeX")
+
+(defun LaTeX-ntheorem-auto-prepare ()
+  "Clear `LaTeX-auto-ntheorem-newtheorem' and
+`LaTeX-auto-ntheorem-newtheoremstyle' before parsing."
+  (setq LaTeX-auto-ntheorem-newtheorem nil)
+  (setq LaTeX-auto-ntheorem-newtheoremstyle nil)
+  (setq LaTeX-auto-ntheorem-newtheoremlisttype nil))
+
+(defun LaTeX-ntheorem-auto-cleanup ()
+  "Move parsed results from `LaTeX-auto-ntheorem-newtheorem' and
+make them available as new environments.  Update
+`LaTeX-ntheorem-theoremstyle-list' with styles defined with
+\"\\newtheoremstyle\"."
+  (dolist (newthm (mapcar #'car (LaTeX-ntheorem-newtheorem-list)))
+    (LaTeX-add-environments (list newthm #'LaTeX-ntheorem-env-label))
+    (LaTeX-add-environments (list (concat newthm "*")
+                                  #'LaTeX-ntheorem-env-label)))
+  (dolist (newthmstyle (LaTeX-ntheorem-newtheoremstyle-list))
+    (add-to-list (make-local-variable 'LaTeX-ntheorem-theoremstyle-list)
+                 newthmstyle))
+  (dolist (newthmlist (LaTeX-ntheorem-newtheoremlisttype-list))
+    (add-to-list (make-local-variable 'LaTeX-ntheorem-listtype-list)
+                 newthmlist))
+  (when (LaTeX-provided-package-options-member "ntheorem" "thmmarks")
+    (dolist (nthm (mapcar #'car (LaTeX-ntheorem-newtheorem-list)))
+      (TeX-add-symbols (concat nthm "Symbol"))))
+  (dolist (nthm (mapcar #'car (LaTeX-ntheorem-newtheorem-list)))
+    (TeX-add-symbols (concat nthm "name"))))
+
+(add-hook 'TeX-auto-prepare-hook #'LaTeX-ntheorem-auto-prepare t)
+(add-hook 'TeX-auto-cleanup-hook #'LaTeX-ntheorem-auto-cleanup t)
+(add-hook 'TeX-update-style-hook #'TeX-auto-parse t)
+
+(TeX-add-style-hook
+ "ntheorem"
+ (lambda ()
+
+   (TeX-auto-add-regexp
+    `(,(concat "\\\\newtheorem{\\(" TeX-token-char "+\\)}")
+      1 LaTeX-auto-ntheorem-newtheorem))
+   (TeX-auto-add-regexp
+    `(,(concat "\\\\newframedtheorem{\\(" TeX-token-char "+\\)}")
+      1 LaTeX-auto-ntheorem-newtheorem))
+   (TeX-auto-add-regexp
+    `(,(concat "\\\\newshadedtheorem{\\(" TeX-token-char "+\\)}")
+      1 LaTeX-auto-ntheorem-newtheorem))
+   (TeX-auto-add-regexp
+    `(,(concat "\\\\newtheoremstyle{\\(" TeX-token-char "+\\)}")
+      1 LaTeX-auto-ntheorem-newtheoremstyle))
+   (TeX-auto-add-regexp
+    `(,(concat "\\\\newtheoremlisttype{\\(" TeX-token-char "+\\)}")
+      1 LaTeX-auto-ntheorem-newtheoremlisttype))
+
+   (TeX-add-symbols
+    ;; 2.2 Defining New Theorem Sets
+    ;; Overrule the defintion in `latex.el':
+    '("newtheorem"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((nthm (TeX-read-string
+                      (TeX-argument-prompt nil nil "Environment"))))
+           (LaTeX-add-ntheorem-newtheorems nthm)
+           (LaTeX-add-environments (list nthm #'LaTeX-ntheorem-env-label))
+           (LaTeX-add-environments (list (concat nthm "*")
+                                         #'LaTeX-ntheorem-env-label))
+           (format "%s" nthm))))
+      [ TeX-arg-environment "Numbered like" ]
+      t [ (TeX-arg-eval progn (if (eq (save-excursion
+                                        (backward-char 2)
+                                        (preceding-char)) ?\])
+                                  ()
+                                (TeX-arg-counter t "Within counter"))
+                        "") ])
+
+    '("renewtheorem"
+      (TeX-arg-eval completing-read "Environment: "
+                    (LaTeX-ntheorem-newtheorem-list))
+      [ TeX-arg-environment "Numbered like" ]
+      t [ (TeX-arg-eval progn (if (eq (save-excursion
+                                        (backward-char 2)
+                                        (preceding-char)) ?\])
+                                  ()
+                                (TeX-arg-counter t "Within counter"))
+                        "") ])
+
+    ;; 2.3 Defining the Layout of Theorem Sets
+    '("theoremstyle"
+      (TeX-arg-eval completing-read "Style: "
+                    LaTeX-ntheorem-theoremstyle-list))
+
+    '("theorembodyfont"
+      (LaTeX-arg-ntheorem-fontdecl "Body font"))
+
+    '("theoremheaderfont"
+      (LaTeX-arg-ntheorem-fontdecl "Header font"))
+
+    '("theoremnumbering"
+      (TeX-arg-eval completing-read
+                    (TeX-argument-prompt nil nil "Numbering scheme")
+                    '("arabic" "roman" "Roman" "alph" "Alph"
+                      "greek" "Greek" "fnsymbol")))
+
+    '("theoremseparator" "Separator")
+
+    '("theorempreskip"
+      (TeX-arg-length "Skip before theorem"))
+
+    '("theorempostskip"
+      (TeX-arg-length "Skip after theorem"))
+
+    '("theoremindent"
+      (TeX-arg-free "Theorem indent"))
+
+    (when (LaTeX-provided-package-options-member "ntheorem" "thmmarks")
+      '("theoremsymbol" t))
+
+    '("theoremprework" t)
+    '("theorempostwork" t)
+
+    '("theoremclass"
+      (TeX-arg-eval completing-read "Theorem type: "
+                    (append '(("LaTeX"))
+                            (LaTeX-ntheorem-newtheorem-list))))
+
+    ;; 2.3.6 A Standard Set of Theorems
+    (when (LaTeX-provided-package-options-member "ntheorem" "standard")
+      (let ((env '("Theorem"    "Lemma"     "Proposition"
+                   "Corollary"  "Satz"      "Korollar"
+                   "Definition" "Example"   "Beispiel"
+                   "Anmerkung"  "Bemerkung" "Remark"
+                   "Proof"      "Beweis")))
+        (dolist (elt env)
+          (LaTeX-add-ntheorem-newtheorems elt)
+          (LaTeX-add-environments (list elt #'LaTeX-ntheorem-env-label))
+          (LaTeX-add-environments (list (concat elt "*")
+                                        #'LaTeX-ntheorem-env-label)))))
+
+    ;; 2.3.7 Framed and Boxed Theorems
+    '("newframedtheorem"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((nthm (TeX-read-string
+                      (TeX-argument-prompt nil nil "Environment"))))
+           (LaTeX-add-ntheorem-newtheorems nthm)
+           (LaTeX-add-environments (list nthm #'LaTeX-ntheorem-env-label))
+           (LaTeX-add-environments (list (concat nthm "*")
+                                         #'LaTeX-ntheorem-env-label))
+           (format "%s" nthm))))
+      [ TeX-arg-environment "Numbered like" ]
+      t [ (TeX-arg-eval progn (if (eq (save-excursion
+                                        (backward-char 2)
+                                        (preceding-char)) ?\])
+                                  ()
+                                (TeX-arg-counter t "Within counter"))
+                        "") ])
+
+    '("newshadedtheorem"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((nthm (TeX-read-string
+                      (TeX-argument-prompt nil nil "Environment"))))
+           (LaTeX-add-ntheorem-newtheorems nthm)
+           (LaTeX-add-environments (list nthm #'LaTeX-ntheorem-env-label))
+           (LaTeX-add-environments (list (concat nthm "*")
+                                         #'LaTeX-ntheorem-env-label))
+           (format "%s" nthm))))
+      [ TeX-arg-environment "Numbered like" ]
+      t [ (TeX-arg-eval progn (if (eq (save-excursion
+                                        (backward-char 2)
+                                        (preceding-char)) ?\])
+                                  ()
+                                (TeX-arg-counter t "Within counter"))
+                        "") ])
+    '("shadecolor"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((color (cond ((member "xcolor" (TeX-style-list))
+                             (completing-read "Color name: " (LaTeX-xcolor-definecolor-list)))
+                            ((member "color" (TeX-style-list))
+                             (completing-read "Color name: " (LaTeX-color-definecolor-list)))
+                            (t
+                             (TeX-read-string "Color name: ")))))
+           (format "%s" color)))))
+
+    '("theoremframepreskip"
+      (TeX-arg-length "Skip before framed theorem"))
+
+    '("theoremframepostskip"
+      (TeX-arg-length "Skip after framed theorem"))
+
+    '("theoreminframepreskip"
+      (TeX-arg-length "Skip inside framed theorem"))
+
+    '("theoreminframepostskip"
+      (TeX-arg-length "Skip inside framed theorem"))
+
+    ;; 2.4 Generating Theoremlists
+    '("listtheorems"
+      (TeX-arg-eval mapconcat #'identity
+                    (TeX-completing-read-multiple
+                     "Lists: "
+                     (LaTeX-ntheorem-newtheorem-list)) ","))
+
+    ;; 2.4.2 Writing Extra Stuff to the Theorem File
+    '("addtheoremline"
+      (TeX-arg-eval completing-read "Environment: "
+                    (LaTeX-ntheorem-newtheorem-list))
+      t)
+
+    '("addtheoremline*"
+      (TeX-arg-eval completing-read "Environment: "
+                    (LaTeX-ntheorem-newtheorem-list))
+      t)
+
+    '("addtotheoremfile"
+      [ TeX-arg-eval completing-read "Environment: "
+        (LaTeX-ntheorem-newtheorem-list) ]
+      t)
+
+    ;; 2.5.1 Defining New Theorem Layouts
+    '("newtheoremstyle"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((style (TeX-read-string
+                       (TeX-argument-prompt nil nil "Style name"))))
+           (LaTeX-add-ntheorem-newtheoremstyles style)
+           (add-to-list (make-local-variable 'LaTeX-ntheorem-theoremstyle-list)
+                        (list style))
+           (format "%s" style))))
+      2)
+
+    '("renewtheoremstyle"
+      (TeX-arg-eval completing-read "Style name: "
+                    LaTeX-ntheorem-theoremstyle-list)
+      2)
+
+    ;; 2.5.2 Defining New Theorem List Layouts
+    '("newtheoremlisttype"
+      (TeX-arg-eval
+       (lambda ()
+         (let ((layout (TeX-read-string
+                        (TeX-argument-prompt nil nil "List layout name"))))
+           (LaTeX-add-ntheorem-newtheoremlisttypes layout)
+           (add-to-list (make-local-variable 'LaTeX-ntheorem-listtype-list)
+                        (list layout))
+           (format "%s" layout))))
+      3)
+
+    '("renewtheoremlisttype"
+      (TeX-arg-eval completing-read "Style name: "
+                    LaTeX-ntheorem-listtype-list)
+      3)
+
+    ;; 2.6 Setting End Marks
+    '("qedsymbol" t)
+    '("NoEndMark" 0)
+
+    ;; 2.7 Extended Referencing Features
+    (when (LaTeX-provided-package-options-member "ntheorem" "thref")
+      '("thref" TeX-arg-ref)) )
+
+   ;; 2.6 Setting End Marks
+   ;; ... the endmark can manually be set by just saying \<name>Symbol.
+   (when (LaTeX-provided-package-options-member "ntheorem" "thmmarks")
+     (dolist (nthm (mapcar #'car (LaTeX-ntheorem-newtheorem-list)))
+       (TeX-add-symbols (concat nthm "Symbol"))))
+
+   ;; 2.8 Miscellaneous
+   ;; Inside a theorem-like environment <env>, the name given as
+   ;; optional argument is accessible by \<env>name
+   (dolist (nthm (mapcar #'car (LaTeX-ntheorem-newtheorem-list)))
+     (TeX-add-symbols (concat nthm "name")))
+
+   ;; Fontification
+   (when (and (featurep 'font-latex)
+              (eq TeX-install-font-lock 'font-latex-setup))
+     (font-latex-add-keywords '(("newtheorem"             "{[{[")
+                                ("renewtheorem"           "{[{[")
+                                ("theoremstyle"           "{")
+                                ("theorembodyfont"        "{")
+                                ("theoremheaderfont"      "{")
+                                ("theoremnumbering"       "{")
+                                ("theoremseparator"       "{")
+                                ("theorempreskip"         "{")
+                                ("theorempostskip"        "{")
+                                ("theoremsymbol"          "{")
+                                ("theoremindent"          "")
+                                ("theoremprework"         "{")
+                                ("theorempostwork"        "{")
+                                ("theoremclass"           "{")
+                                ("newframedtheorem"       "{[{[")
+                                ("newshadedtheorem"       "*{[{[")
+                                ("shadecolor"             "{")
+                                ("theoremframepreskip"    "{")
+                                ("theoremframepostskip"   "{")
+                                ("theoreminframepreskip"  "{")
+                                ("theoreminframepostskip" "{")
+                                ("listtheorems"           "{")
+                                ("addtheoremline"         "*{{")
+                                ("addtotheoremfile"       "[{")
+                                ("newtheoremstyle"        "{{{")
+                                ("renewtheoremstyle"      "{{{")
+                                ("newtheoremlisttype"     "{{{{")
+                                ("renewtheoremlisttype"   "{{{{"))
+                              'function)
+     (font-latex-add-keywords '(("thref"                  "{"))
+                              'reference)))
+ TeX-dialect)
+
+(defvar LaTeX-ntheorem-package-options
+  '("standard" "noconfig" "framed" "thmmarks" "thref" "amsmath" "hyperref")
+  "Package options for the ntheorem package.")
+
+;;; ntheorem.el ends here