(defun mail-abbrev-expand-hook ()
"For use as the fourth arg to `define-abbrev'.
After expanding a mail-abbrev, if Auto Fill mode is on and we're past the
-fill-column, break the line at the previous comma, and indent the next line."
- ;; Disable abbrev mode to avoid recursion in indent-relative expanding
- ;; part of the abbrev expansion as an abbrev itself.
- (let ((abbrev-mode nil))
- (save-excursion
- (let ((p (point))
- bol comma fp)
- (beginning-of-line)
- (setq bol (point))
- (goto-char p)
- (while (and auto-fill-function
- (>= (current-column) fill-column)
- (search-backward "," bol t))
- (setq comma (point))
- (forward-char 1) ; Now we are just past the comma.
- (insert "\n")
- (delete-horizontal-space)
- (setq p (point))
- (indent-relative)
- (setq fp (buffer-substring p (point)))
- ;; Go to the end of the new line.
- (end-of-line)
- (if (> (current-column) fill-column)
- ;; It's still too long; do normal auto-fill.
- (let ((fill-prefix (or fp "\t")))
- (do-auto-fill)))
- ;; Resume the search.
- (goto-char comma)
- )))))
+fill-column, break the line at the previous comma, and indent the next line
+with a space."
+ (when auto-fill-function
+ (let (p)
+ (save-excursion
+ (while (>= (current-column) fill-column)
+ (while (and (search-backward "," (point-at-bol) 'move)
+ (>= (current-column) (1- fill-column))
+ (setq p (point))))
+ (when (or (not (bolp))
+ (and p (goto-char p)))
+ (setq p nil)
+ (forward-char 1)
+ (insert "\n")
+ (when (looking-at "[\t ]+")
+ (delete-region (point) (match-end 0)))
+ (insert " ")
+ (end-of-line)))))))
\f
;;; Syntax tables and abbrev-expansion