T-gnus 6.14.6; synch up with Gnus v5.8.8.

[elisp/gnus.git-] / lisp / flow-fill.el

diff --git a/lisp/flow-fill.el b/lisp/flow-fill.el
index 9aae7c4..64946f9 100644 (file)
--- a/lisp/flow-fill.el
+++ b/lisp/flow-fill.el
@@ -1,22 +1,26 @@
 ;;; flow-fill.el --- interprete RFC2646 "flowed" text
+
 ;; Copyright (C) 2000 Free Software Foundation, Inc.
 
 ;; Author: Simon Josefsson <jas@pdc.kth.se>
 ;; Keywords: mail
 
-;; This program is free software; you can redistribute it and/or modify
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2 of the License, or
-;; (at your option) any later version.
-;;
-;; This program is distributed in the hope that it will be useful,
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ;; GNU General Public License for more details.
-;;
+
 ;; You should have received a copy of the GNU General Public License
-;; along with this program; if not, write to the Free Software
-;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
 
 ;;; Commentary:
 
@@ -31,7 +35,8 @@
 ;; paragraph and we let `fill-region' fill the long line into several
 ;; lines with the quote prefix as `fill-prefix'.
 
-;; Todo: encoding
+;; Todo: encoding, implement basic `fill-region' (Emacs and XEmacs
+;;       implementations differ..)
 
 ;; History:
 
@@ -39,16 +44,20 @@
 ;; 2000-02-19  use `point-at-{b,e}ol' in XEmacs
 ;; 2000-03-11  no compile warnings for point-at-bol stuff
 ;; 2000-03-26  commited to gnus cvs
+;; 2000-10-23  don't flow "-- " lines, make "quote-depth wins" rule
+;;             work when first line is at level 0.
 
 ;;; Code:
 
+(eval-when-compile (require 'cl))
+
 (eval-and-compile
-  (fset 'fill-flowed-point-at-bol
+  (defalias 'fill-flowed-point-at-bol
        (if (fboundp 'point-at-bol)
            'point-at-bol
          'line-beginning-position))
-  
-  (fset 'fill-flowed-point-at-eol
+
+   (defalias 'fill-flowed-point-at-eol
        (if (fboundp 'point-at-eol)
            'point-at-eol
          'line-end-position)))
@@ -61,7 +70,7 @@
       (when (save-excursion
              (beginning-of-line)
              (looking-at "^\\(>*\\)\\( ?\\)"))
-       (let ((quote (match-string 1)))
+       (let ((quote (match-string 1)) sig)
          (if (string= quote "")
              (setq quote nil))
          (when (and quote (string= (match-string 2) ""))
@@ -71,23 +80,23 @@
              (when (> (skip-chars-forward ">") 0)
                (insert " "))))
          (while (and (save-excursion
-                       (backward-char 3)
+                       (ignore-errors (backward-char 3))
+                       (setq sig (looking-at "-- "))
                        (looking-at "[^-][^-] "))
                      (save-excursion
                        (unless (eobp)
                          (forward-char 1)
-                         (if quote
-                             (looking-at (format "^\\(%s\\)\\([^>]\\)" quote))
-                           (looking-at "^ ?")))))
+                         (looking-at (format "^\\(%s\\)\\([^>]\\)" (or quote " ?"))))))
            (save-excursion
              (replace-match (if (string= (match-string 2) " ")
                                 "" "\\2")))
            (backward-delete-char -1)
            (end-of-line))
-         (let ((fill-prefix (when quote (concat quote " "))))
-           (fill-region (fill-flowed-point-at-bol)
-                        (fill-flowed-point-at-eol)
-                        'left 'nosqueeze)))))))
+         (unless sig
+           (let ((fill-prefix (when quote (concat quote " "))))
+             (fill-region (fill-flowed-point-at-bol)
+                          (fill-flowed-point-at-eol)
+                          'left 'nosqueeze))))))))
 
 (provide 'flow-fill)