emacs/lisp/progmodes/autoconf.el
Stefan Kangas 32db168290 Prefer defvar-keymap in some trivial cases
* lisp/calendar/diary-lib.el (diary-fancy-overriding-map):
* lisp/emacs-lisp/chart.el (chart-mode-map):
* lisp/emulation/cua-base.el (cua-global-keymap)
(cua--cua-keys-keymap, cua--prefix-override-keymap)
(cua--prefix-repeat-keymap, cua--global-mark-keymap)
(cua--rectangle-keymap, cua--region-keymap):
* lisp/emulation/viper-keym.el (viper-vi-intercept-map)
(viper-insert-intercept-map, viper-emacs-intercept-map)
(viper-vi-global-user-map, viper-vi-basic-map, viper-vi-kbd-map)
(viper-vi-diehard-map, viper-insert-global-user-map)
(viper-insert-basic-map, viper-insert-diehard-map)
(viper-insert-kbd-map, viper-replace-map)
(viper-emacs-global-user-map, viper-emacs-kbd-map)
(viper-empty-keymap, viper-mode-map, viper-minibuffer-map)
(viper-ex-cmd-map, ex-read-filename-map)
(viper-slash-and-colon-map, viper-comint-mode-modifier-map)
(viper-dired-modifier-map, viper-gnus-modifier-map):
* lisp/gnus/gnus-sum.el (gnus-summary-generic-mark-map):
* lisp/menu-bar.el (global-buffers-menu-map)
(menu-bar-preferences-menu):
* lisp/mh-e/mh-e.el (mh-folder-mode-map, mh-inc-spool-map)
(mh-search-mode-map, mh-show-mode-map):
* lisp/play/dunnet.el (dungeon-batch-map):
* lisp/progmodes/autoconf.el (autoconf-mode-map):
* lisp/tool-bar.el (tool-bar-map):
* lisp/vc/ediff-help.el (ediff-help-region-map):
* lisp/vc/ediff-hook.el (menu-bar-epatch-menu)
(menu-bar-ediff-merge-menu, menu-bar-ediff-menu):
* lisp/windmove.el (windmove-mode-map):
* lisp/xwidget.el (xwidget-webkit-isearch-mode-map)
(xwidget-webkit-edit-mode-map): Prefer defvar-keymap.
2022-07-20 09:27:30 +02:00

96 lines
3.6 KiB
EmacsLisp

;;; autoconf.el --- mode for editing Autoconf configure.ac files -*- lexical-binding: t; -*-
;; Copyright (C) 2000-2022 Free Software Foundation, Inc.
;; Author: Dave Love <fx@gnu.org>
;; Keywords: languages
;; This file is part of GNU Emacs.
;; GNU Emacs 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 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Provides fairly minimal font-lock, imenu and indentation support
;; for editing configure.ac files. Only Autoconf syntax is processed.
;; There is no attempt to deal with shell text -- probably that will
;; always lose.
;; This is specialized for configure.ac files. It doesn't inherit the
;; general M4 stuff from M4 mode.
;; There is also an autoconf-mode.el in existence. That appears to be
;; for editing the Autoconf M4 source, rather than configure.ac files.
;;; Code:
(defvar-keymap autoconf-mode-map)
(defvar autoconf-mode-hook nil
"Hook run by `autoconf-mode'.")
(defconst autoconf-definition-regexp
"A\\(?:H_TEMPLATE\\|C_\\(?:SUBST\\|DEFINE\\(?:_UNQUOTED\\)?\\)\\)(\\[*\\(\\(?:\\sw\\|\\s_\\)+\\)\\]*")
(defvar autoconf-font-lock-keywords
`(("\\_<\\(?:A[CHMS]\\|LT\\)_\\(?:\\sw\\|\\s_\\)+" . font-lock-keyword-face)
(,autoconf-definition-regexp
1 font-lock-function-name-face)
;; Are any other M4 keywords really appropriate for configure.ac,
;; given that we do `dnl'?
("changequote" . font-lock-keyword-face)))
(defvar autoconf-mode-syntax-table
(let ((table (make-syntax-table)))
(modify-syntax-entry ?\" "." table)
(modify-syntax-entry ?\n ">" table)
(modify-syntax-entry ?# "<" table)
table))
(defvar autoconf-imenu-generic-expression
(list (list nil autoconf-definition-regexp 1)))
;; It's not clear how best to implement this.
(defun autoconf-current-defun-function ()
"Function to use for `add-log-current-defun-function' in Autoconf mode.
This version looks back for an AC_DEFINE or AC_SUBST. It will stop
searching backwards at another AC_... command."
(save-excursion
(skip-syntax-forward "w_" (line-end-position))
(if (re-search-backward autoconf-definition-regexp
(save-excursion (beginning-of-defun) (point))
t)
(match-string-no-properties 1))))
;;;###autoload
(define-derived-mode autoconf-mode prog-mode "Autoconf"
"Major mode for editing Autoconf configure.ac files."
(setq-local parens-require-spaces nil) ; for M4 arg lists
(setq-local defun-prompt-regexp "^[ \t]*A[CM]_\\(\\sw\\|\\s_\\)+")
(setq-local comment-start "dnl ")
;; We want to avoid matching "dnl" in other text.
(setq-local comment-start-skip "\\(?:\\(\\W\\|^\\)dnl\\|#\\) +")
(setq-local syntax-propertize-function
(syntax-propertize-rules ("\\<dnl\\>" (0 "<"))))
(setq-local font-lock-defaults
'(autoconf-font-lock-keywords nil nil))
(setq-local imenu-generic-expression autoconf-imenu-generic-expression)
(setq-local indent-line-function #'indent-relative)
(setq-local add-log-current-defun-function
#'autoconf-current-defun-function))
(provide 'autoconf-mode)
(provide 'autoconf)
;;; autoconf.el ends here