Commit 74ac2467 authored by Gerd Moellmann's avatar Gerd Moellmann

(nroff-mode-abbrev-table, nroff-mode): Use define-derived-mode.

(nroff-mode-map, nroff-mode-syntax-table): Massage.
parent df3fd736
......@@ -40,29 +40,33 @@
:group 'wp
:prefix "nroff-")
(defvar nroff-mode-abbrev-table nil
"Abbrev table used while in nroff mode.")
(define-abbrev-table 'nroff-mode-abbrev-table ())
(defcustom nroff-electric-mode nil
"*Non-nil means automatically closing requests when you insert an open."
:group 'nroff
:type 'boolean)
(defvar nroff-mode-map nil
"Major mode keymap for nroff mode.")
(if (not nroff-mode-map)
(progn
(setq nroff-mode-map (make-sparse-keymap))
(define-key nroff-mode-map "\t" 'tab-to-tab-stop)
(define-key nroff-mode-map "\es" 'center-line)
(define-key nroff-mode-map "\e?" 'count-text-lines)
(define-key nroff-mode-map "\n" 'electric-nroff-newline)
(define-key nroff-mode-map "\en" 'forward-text-line)
(define-key nroff-mode-map "\ep" 'backward-text-line)))
(defvar nroff-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\t" 'tab-to-tab-stop)
(define-key map "\es" 'center-line)
(define-key map "\e?" 'count-text-lines)
(define-key map "\n" 'electric-nroff-newline)
(define-key map "\en" 'forward-text-line)
(define-key map "\ep" 'backward-text-line)
map)
"Major mode keymap for `nroff-mode'.")
(defvar nroff-mode-syntax-table nil
"Syntax table used while in nroff mode.")
(defvar nroff-mode-syntax-table
(let ((st (copy-syntax-table text-mode-syntax-table)))
;; " isn't given string quote syntax in text-mode but it
;; (arguably) should be for use round nroff arguments (with ` and
;; ' used otherwise).
(modify-syntax-entry ?\" "\" 2" st)
;; Comments are delimited by \" and newline.
(modify-syntax-entry ?\\ "\\ 1" st)
(modify-syntax-entry ?\n "> 1" st)
st)
"Syntax table used while in `nroff-mode'.")
(defcustom nroff-font-lock-keywords
(list
......@@ -85,63 +89,36 @@
) "\\|")
"\\)")
)
"Font-lock highlighting control in nroff-mode."
"Font-lock highlighting control in `nroff-mode'."
:group 'nroff
:type '(repeat regexp))
;;;###autoload
(defun nroff-mode ()
(define-derived-mode nroff-mode text-mode "Nroff"
"Major mode for editing text intended for nroff to format.
\\{nroff-mode-map}
Turning on Nroff mode runs `text-mode-hook', then `nroff-mode-hook'.
Also, try `nroff-electric-mode', for automatically inserting
closing requests for requests that are used in matched pairs."
(interactive)
(kill-all-local-variables)
(use-local-map nroff-mode-map)
(setq mode-name "Nroff")
(setq major-mode 'nroff-mode)
(if nroff-mode-syntax-table
()
(setq nroff-mode-syntax-table (copy-syntax-table text-mode-syntax-table))
;; " isn't given string quote syntax in text-mode but it
;; (arguably) should be for use round nroff arguments (with ` and
;; ' used otherwise).
(modify-syntax-entry ?\" "\" 2" nroff-mode-syntax-table)
;; Comments are delimited by \" and newline.
(modify-syntax-entry ?\\ "\\ 1" nroff-mode-syntax-table)
(modify-syntax-entry ?\n "> 1" nroff-mode-syntax-table))
(set-syntax-table nroff-mode-syntax-table)
(make-local-variable 'font-lock-defaults)
(setq font-lock-defaults
;; SYNTAX-BEGIN is set to backward-paragraph to avoid slow-down
;; near the end of large buffers due to searching to buffer's
;; beginning.
'(nroff-font-lock-keywords nil t nil backward-paragraph))
(setq local-abbrev-table nroff-mode-abbrev-table)
(make-local-variable 'nroff-electric-mode)
(setq nroff-electric-mode nil)
(make-local-variable 'outline-regexp)
(setq outline-regexp "\\.H[ ]+[1-7]+ ")
(make-local-variable 'outline-level)
(setq outline-level 'nroff-outline-level)
(set (make-local-variable 'font-lock-defaults)
;; SYNTAX-BEGIN is set to backward-paragraph to avoid slow-down
;; near the end of large buffers due to searching to buffer's
;; beginning.
'(nroff-font-lock-keywords nil t nil backward-paragraph))
(set (make-local-variable 'nroff-electric-mode) nil)
(set (make-local-variable 'outline-regexp) "\\.H[ ]+[1-7]+ ")
(set (make-local-variable 'outline-level) 'nroff-outline-level)
;; now define a bunch of variables for use by commands in this mode
(make-local-variable 'page-delimiter)
(setq page-delimiter "^\\.\\(bp\\|SK\\|OP\\)")
(make-local-variable 'paragraph-start)
(setq paragraph-start (concat "[.']\\|" paragraph-start))
(make-local-variable 'paragraph-separate)
(setq paragraph-separate (concat "[.']\\|" paragraph-separate))
(set (make-local-variable 'page-delimiter) "^\\.\\(bp\\|SK\\|OP\\)")
(set (make-local-variable 'paragraph-start)
(concat "[.']\\|" paragraph-start))
(set (make-local-variable 'paragraph-separate)
(concat "[.']\\|" paragraph-separate))
;; comment syntax added by mit-erl!gildea 18 Apr 86
(make-local-variable 'comment-start)
(setq comment-start "\\\" ")
(make-local-variable 'comment-start-skip)
(setq comment-start-skip "\\\\\"[ \t]*")
(make-local-variable 'comment-column)
(setq comment-column 24)
(make-local-variable 'comment-indent-function)
(setq comment-indent-function 'nroff-comment-indent)
(run-hooks 'text-mode-hook 'nroff-mode-hook))
(set (make-local-variable 'comment-start) "\\\" ")
(set (make-local-variable 'comment-start-skip) "\\\\\"[ \t]*")
(set (make-local-variable 'comment-column) 24)
(set (make-local-variable 'comment-indent-function) 'nroff-comment-indent))
(defun nroff-outline-level ()
(save-excursion
......
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