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(fill-paragraph-function): New variable.

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(fill-paragraph): Use it.
This commit is contained in:
Richard M. Stallman 1995-02-02 09:50:23 +00:00
parent fcf9745f68
commit 86dfb30a1b
1 changed files with 21 additions and 13 deletions
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34
lisp/textmodes/fill.el
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@ -37,6 +37,9 @@ A value of nil means that any change in indentation starts a new paragraph.")
(defconst sentence-end-double-space t
"*Non-nil means a single space does not end a sentence.")
(defvar fill-paragraph-function nil
"Mode-specific function to fill a paragraph.")
(defun set-fill-prefix ()
"Set the fill prefix to the current line up to point.
Filling expects lines to start with the fill prefix and
@ -317,20 +320,25 @@ space does not end a sentence, so don't break a line there."
(defun fill-paragraph (arg)
"Fill paragraph at or after point. Prefix arg means justify as well.
If `sentence-end-double-space' is non-nil, then period followed by one
space does not end a sentence, so don't break a line there."
space does not end a sentence, so don't break a line there.
If `fill-paragraph-function' is non-nil, we call it (passing our
argument to it), and if it returns non-nil, we simply return its value."
(interactive "P")
(let ((before (point)))
(save-excursion
(forward-paragraph)
(or (bolp) (newline 1))
(let ((end (point))
(beg (progn (backward-paragraph) (point))))
(goto-char before)
(if use-hard-newlines
;; Can't use fill-region-as-paragraph, since this paragraph may
;; still contain hard newlines. See fill-region.
(fill-region beg end arg)
(fill-region-as-paragraph beg end arg))))))
(or (and fill-paragraph-function
(funcall fill-paragraph-function arg))
(let ((before (point)))
(save-excursion
(forward-paragraph)
(or (bolp) (newline 1))
(let ((end (point))
(beg (progn (backward-paragraph) (point))))
(goto-char before)
(if use-hard-newlines
;; Can't use fill-region-as-paragraph, since this paragraph may
;; still contain hard newlines. See fill-region.
(fill-region beg end arg)
(fill-region-as-paragraph beg end arg)))))))
(defun fill-region (from to &optional justify nosqueeze to-eop)
"Fill each of the paragraphs in the region.