1 files changed, 0 insertions, 103 deletions
diff --git a/xroff.el b/xroff.el
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-;;; xroff.el --- major mode for xroff  -*- lexical-binding: t; -*-
-
-;; Copyright (C) 2022 John Ankarström
-
-;; Author: John Ankarström <john@ankarstrom.se>
-;; Created: 10 Jul 2022
-;; Version: 0.1
-
-;; Keywords: troff groff
-;; URL: http://ankarstrom.se/~john/etc/xroff
-
-;; This file is not part of GNU Emacs.
-
-;; Permission to use, copy, modify and/or distribute this software for
-;; any purpose with or without fee is hereby granted.
-
-;;; Commentary:
-
-;; Major mode for xroff, an alternative, XML-like syntax for troff.
-
-;;; Code:
-
-(defvar xroff--request-regexp
-  (rx "<"
-      (group (+ (or "\\>" (not (in "> ")))))
-      (group (* (or "\\>" (not ?>))))
-      ">"))
-
-(defvar xroff--single-escape-regexp
-  (rx "\\" any))
-
-(defvar xroff--identifier-escape-regexp
-  (rx "\\"
-      (any "FfgkmnOsYZ*$")
-      (? (any "+-"))
-      (or (not (any "([+-"))
-	  (seq "(" any any)
-	  (seq "[" (* (not "]")) "]"))))
-
-(defvar xroff--parameter-escape-regexp
-  (rx "\\"
-      (any "ABbCDHhLlMNoRSVvwXxz")
-      "'" (* (not "'")) "'"))
-
-(defconst xroff-font-lock-keywords
-  `(;; Comment.
-    ("<!--.*-->"
-     (0 font-lock-comment-face))
-    ;; Request.
-    (,(concat xroff--request-regexp)
-     (1 font-lock-keyword-face keep)
-     (2 font-lock-string-face keep))
-    (,(concat "\\\\" xroff--request-regexp)
-     (1 nil t)
-     (2 nil t))
-    ;; Parameter escape (e.g., \l'...').
-    (,xroff--parameter-escape-regexp
-     (0 xroff-escape-face))
-    (,(concat "\\\\" xroff--parameter-escape-regexp)
-     (0 nil t))
-    ;; Identifier escape (e.g., \n(PI).
-    (,xroff--identifier-escape-regexp
-     (0 xroff-escape-face))
-    (,(concat "\\\\" xroff--identifier-escape-regexp)
-     (0 nil t))
-    ;; Single escape (e.g., \%).
-    (,xroff--single-escape-regexp
-     (0 xroff-escape-face))
-    (,(concat "\\\\" xroff--single-escape-regexp)
-     (0 nil t))
-    ;; Escaped backslash.
-    (,"\\\\\\\\"
-     (0 xroff-escape-face t))))
-
-(defface xroff-escape
-  '((t (:foreground "gray")))
-  "`xroff-mode' face used to highlight backslash escapes."
-  :group 'xroff)
-(defvar xroff-escape-face 'xroff-escape)
-
-;;;###autoload
-(define-derived-mode xroff-mode text-mode "Xroff"
-  "Major mode for editing documents with xroff syntax."
-  ;; A start or end tag by itself on a line separates a paragraph.
-  ;; This is desirable because SGML discards a newline that appears
-  ;; immediately after a start tag or immediately before an end tag.
-  (setq-local paragraph-start "<\\([^>]\\)+>")
-  (setq-local paragraph-separate "$\\|\\]>")
-  (setq-local adaptive-fill-regexp "[ \t]*")
-  ;; (add-hook 'fill-nobreak-predicate 'sgml-fill-nobreak nil t)
-  ;; (setq-local indent-line-function 'sgml-indent-line)
-  (setq-local comment-start "<!-- ")
-  (setq-local comment-end " -->")
-  ;; (setq-local comment-indent-function 'sgml-comment-indent)
-  ;; (setq-local comment-line-break-function 'sgml-comment-indent-new-line)
-  (setq-local font-lock-defaults '((xroff-font-lock-keywords)))
-  ;; (setq-local font-lock-multiline t)
-  (setq-local comment-start-skip "<!--[ \t]*")
-  (setq-local comment-end-skip "[ \t]*--[ \t\n]*>")
-  (visual-line-mode 1))
-
-(provide 'xroff)
-;;; xroff.el ends here