diff options
Diffstat (limited to 'lisp/textmodes/texinfo.el')
| -rw-r--r-- | lisp/textmodes/texinfo.el | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/lisp/textmodes/texinfo.el b/lisp/textmodes/texinfo.el index 7876a87a281..dbf30dabe59 100644 --- a/lisp/textmodes/texinfo.el +++ b/lisp/textmodes/texinfo.el @@ -4,7 +4,6 @@ ;; Foundation, Inc. ;; Author: Robert J. Chassell -;; Date: [See date below for texinfo-version] ;; Maintainer: emacs-devel@gnu.org ;; Keywords: maint, tex, docs @@ -411,13 +410,13 @@ value of `texinfo-mode-hook'." "\\)\\>")) (setq-local require-final-newline mode-require-final-newline) (setq-local indent-tabs-mode nil) - (setq-local paragraph-separate - (concat "@[a-zA-Z]*[ \n]\\|" - paragraph-separate)) (setq-local paragraph-start (concat "@[a-zA-Z]*[ \n]\\|" paragraph-start)) + (setq-local fill-paragraph-function 'texinfo--fill-paragraph) (setq-local sentence-end-base "\\(@\\(end\\)?dots{}\\|[.?!]\\)[]\"'”)}]*") (setq-local fill-column 70) + (setq-local beginning-of-defun-function #'texinfo--beginning-of-defun) + (setq-local end-of-defun-function #'texinfo--end-of-defun) (setq-local comment-start "@c ") (setq-local comment-start-skip "@c +\\|@comment +") (setq-local words-include-escapes t) @@ -457,6 +456,58 @@ value of `texinfo-mode-hook'." prevent-filling (concat auto-fill-inhibit-regexp "\\|" prevent-filling))))) +(defvar texinfo-fillable-commands '("@noindent") + "A list of commands that can be filled.") + +(defun texinfo--fill-paragraph (justify) + "Function to fill a paragraph in `texinfo-mode'." + (let ((command-re "\\(@[a-zA-Z]+\\)[ \t\n]")) + (catch 'no-fill + (save-restriction + ;; First check whether we're on a command line that can be + ;; filled by itself. + (or + (save-excursion + (beginning-of-line) + (when (looking-at command-re) + (let ((command (match-string 1))) + (if (member command texinfo-fillable-commands) + (progn + (narrow-to-region (point) (progn (forward-line 1) (point))) + t) + (throw 'no-fill nil))))) + ;; We're not on such a line, so fill the region. + (save-excursion + (let ((regexp (concat command-re "\\|^[ \t]*$\\|\f"))) + (narrow-to-region + (if (re-search-backward regexp nil t) + (progn + (forward-line 1) + (point)) + (point-min)) + (if (re-search-forward regexp nil t) + (match-beginning 0) + (point-max))) + (goto-char (point-min))))) + ;; We've now narrowed to the region we want to fill. + (let ((fill-paragraph-function nil) + (adaptive-fill-mode nil)) + (fill-paragraph justify)))) + t)) + +(defun texinfo--beginning-of-defun (&optional arg) + "Go to the previous @node line." + (while (and (> arg 0) + (re-search-backward "^@node " nil t)) + (setq arg (1- arg)))) + +(defun texinfo--end-of-defun () + "Go to the start of the next @node line." + (when (looking-at-p "@node") + (forward-line)) + (if (re-search-forward "^@node " nil t) + (goto-char (match-beginning 0)) + (goto-char (point-max)))) ;;; Insert string commands |