From 6c0bc4a0b901db9be13c6dfdb8370b160dc144ca Mon Sep 17 00:00:00 2001 From: Stefan Monnier Date: Sat, 1 Dec 2001 00:17:08 +0000 Subject: [PATCH] (enriched-mode): Use define-minor-mode. Use dolist and pop and push. --- lisp/enriched.el | 91 ++++++++++++++++++++---------------------------- 1 file changed, 38 insertions(+), 53 deletions(-) diff --git a/lisp/enriched.el b/lisp/enriched.el index bd474058b7c..43da676c4c4 100644 --- a/lisp/enriched.el +++ b/lisp/enriched.el @@ -73,7 +73,7 @@ in text/enriched files." (defface excerpt '((t (:italic t))) "Face used for text that is an excerpt from another document. -This is used in enriched-mode for text explicitly marked as an excerpt." +This is used in `enriched-mode' for text explicitly marked as an excerpt." :group 'enriched) (defconst enriched-display-table (or (copy-sequence standard-display-table) @@ -141,18 +141,9 @@ Any property that is neither on this list nor dealt with by ;;; Internal variables -(defvar enriched-mode nil - "True if Enriched mode is in use.") -(make-variable-buffer-local 'enriched-mode) -(put 'enriched-mode 'permanent-local t) - -(if (not (assq 'enriched-mode minor-mode-alist)) - (setq minor-mode-alist - (cons '(enriched-mode " Enriched") - minor-mode-alist))) (defcustom enriched-mode-hook nil - "Functions to run when entering Enriched mode. + "Hook run after entering/leaving Enriched mode. If you set variables in this hook, you should arrange for them to be restored to their old values if you leave Enriched mode. One way to do this is to add them and their old values to `enriched-old-bindings'." @@ -168,59 +159,53 @@ The value is a list of \(VAR VALUE VAR VALUE...).") ;;; Define the mode ;;; +(put 'enriched-mode 'permanent-local t) ;;;###autoload -(defun enriched-mode (&optional arg) +(define-minor-mode enriched-mode "Minor mode for editing text/enriched files. These are files with embedded formatting information in the MIME standard text/enriched format. Turning the mode on runs `enriched-mode-hook'. More information about Enriched mode is available in the file -etc/enriched.doc in the Emacs distribution directory. +etc/enriched.doc in the Emacs distribution directory. Commands: \\\\{enriched-mode-map}" - (interactive "P") - (let ((mod (buffer-modified-p))) - (cond ((or (<= (prefix-numeric-value arg) 0) - (and enriched-mode (null arg))) - ;; Turn mode off - (setq enriched-mode nil) - (setq buffer-file-format (delq 'text/enriched buffer-file-format)) - ;; restore old variable values - (while enriched-old-bindings - (funcall 'set (car enriched-old-bindings) - (car (cdr enriched-old-bindings))) - (setq enriched-old-bindings (cdr (cdr enriched-old-bindings))))) - - (enriched-mode nil) ; Mode already on; do nothing. - - (t (setq enriched-mode t) ; Turn mode on - (add-to-list 'buffer-file-format 'text/enriched) - ;; Save old variable values before we change them. - ;; These will be restored if we exit Enriched mode. - (setq enriched-old-bindings - (list 'buffer-display-table buffer-display-table - 'indent-line-function indent-line-function - 'default-text-properties default-text-properties)) - (make-local-variable 'indent-line-function) - (make-local-variable 'default-text-properties) - (setq indent-line-function 'indent-to-left-margin - buffer-display-table enriched-display-table) - (use-hard-newlines 1 nil) - (let ((sticky (plist-get default-text-properties 'front-sticky)) - (p enriched-par-props)) - (while p - (add-to-list 'sticky (car p)) - (setq p (cdr p))) - (if sticky - (setq default-text-properties - (plist-put default-text-properties - 'front-sticky sticky)))) - (run-hooks 'enriched-mode-hook))) - (set-buffer-modified-p mod) - (force-mode-line-update))) + nil " Enriched" nil + (cond ((null enriched-mode) + ;; Turn mode off + (setq buffer-file-format (delq 'text/enriched buffer-file-format)) + ;; restore old variable values + (while enriched-old-bindings + (set (pop enriched-old-bindings) (pop enriched-old-bindings)))) + + ((memq 'text/enriched buffer-file-format) + ;; Mode already on; do nothing. + nil) + + (t ; Turn mode on + (push 'text/enriched buffer-file-format) + ;; Save old variable values before we change them. + ;; These will be restored if we exit Enriched mode. + (setq enriched-old-bindings + (list 'buffer-display-table buffer-display-table + 'indent-line-function indent-line-function + 'default-text-properties default-text-properties)) + (make-local-variable 'indent-line-function) + (make-local-variable 'default-text-properties) + (setq indent-line-function 'indent-to-left-margin ;WHY?? -sm + buffer-display-table enriched-display-table) + (use-hard-newlines 1 nil) + (let ((sticky (plist-get default-text-properties 'front-sticky)) + (p enriched-par-props)) + (dolist (x p) + (add-to-list 'sticky x)) + (if sticky + (setq default-text-properties + (plist-put default-text-properties + 'front-sticky sticky))))))) ;;; ;;; Keybindings -- 2.39.2