X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/5ed99d3685cc8d13f8e4c63ad449a6e4d63c8eb0..d0efe6ec5bc90a206c194a429e6cdfd86a8fb3d5:/lisp/textmodes/paragraphs.el

diff --git a/lisp/textmodes/paragraphs.el b/lisp/textmodes/paragraphs.el
index a0892b5ebb..5a5942aa29 100644
--- a/lisp/textmodes/paragraphs.el
+++ b/lisp/textmodes/paragraphs.el
@@ -1,6 +1,6 @@
 ;;; paragraphs.el --- paragraph and sentence parsing
 
-;; Copyright (C) 1985-1987, 1991, 1994-1997, 1999-2011
+;; Copyright (C) 1985-1987, 1991, 1994-1997, 1999-2012
 ;;   Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
@@ -35,19 +35,23 @@
 
 (put 'use-hard-newlines 'permanent-local t)
 (define-minor-mode use-hard-newlines
-  "Minor mode to distinguish hard and soft newlines.
-When active, the functions `newline' and `open-line' add the
+  "Toggle distinguishing between hard and soft newlines.
+With a prefix argument ARG, enable the feature if ARG is
+positive, and disable it otherwise.  If called from Lisp, enable
+it if ARG is omitted or nil.
+
+When enabled, the functions `newline' and `open-line' add the
 text-property `hard' to newlines that they insert, and a line is
 only considered as a candidate to match `paragraph-start' or
 `paragraph-separate' if it follows a hard newline.
 
-Prefix argument says to turn mode on if positive, off if negative.
-When the mode is turned on, if there are newlines in the buffer but no hard
-newlines, ask the user whether to mark as hard any newlines preceding a
-`paragraph-start' line.  From a program, second arg INSERT specifies whether
-to do this; it can be `never' to change nothing, t or `always' to force
-marking, `guess' to try to do the right thing with no questions, nil
-or anything else to ask the user.
+When enabling, if there are newlines in the buffer but no hard
+newlines, ask the user whether to mark as hard any newlines
+preceding a `paragraph-start' line.  From a program, second arg
+INSERT specifies whether to do this; it can be `never' to change
+nothing, t or `always' to force marking, `guess' to try to do the
+right thing with no questions, nil or anything else to ask the
+user.
 
 Newlines not marked hard are called \"soft\", and are always internal
 to paragraphs.  The fill functions insert and delete only soft newlines."
@@ -456,21 +460,29 @@ sentences.  Also, every paragraph boundary terminates sentences as well."
         (sentence-end (sentence-end)))
     (while (< arg 0)
       (let ((pos (point))
-	    ;; We used to use (start-of-paragraph-text), but this can
-	    ;; prevent sentence-end from matching if it is anchored at
-	    ;; BOL and the paragraph starts indented.
-	    (par-beg (save-excursion (backward-paragraph) (point))))
-       (if (and (re-search-backward sentence-end par-beg t)
-		(or (< (match-end 0) pos)
-		    (re-search-backward sentence-end par-beg t)))
-	   (goto-char (match-end 0))
-	 (goto-char par-beg)))
+	    par-beg par-text-beg)
+	(save-excursion
+	  (start-of-paragraph-text)
+	  ;; Start of real text in the paragraph.
+	  ;; We move back to here if we don't see a sentence-end.
+	  (setq par-text-beg (point))
+	  ;; Start of the first line of the paragraph.
+	  ;; We use this as the search limit
+	  ;; to allow s1entence-end to match if it is anchored at
+	  ;; BOL and the paragraph starts indented.
+	  (beginning-of-line)
+	  (setq par-beg (point)))
+	(if (and (re-search-backward sentence-end par-beg t)
+		 (or (< (match-end 0) pos)
+		     (re-search-backward sentence-end par-beg t)))
+	    (goto-char (match-end 0))
+	  (goto-char par-text-beg)))
       (setq arg (1+ arg)))
     (while (> arg 0)
       (let ((par-end (save-excursion (end-of-paragraph-text) (point))))
-       (if (re-search-forward sentence-end par-end t)
-	   (skip-chars-backward " \t\n")
-	 (goto-char par-end)))
+	(if (re-search-forward sentence-end par-end t)
+	    (skip-chars-backward " \t\n")
+	  (goto-char par-end)))
       (setq arg (1- arg)))
     (constrain-to-field nil opoint t)))