mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-24 07:20:37 +00:00
01b5d73b79
* flow-fill.el: Require cl when compiling. 2000-10-26 Simon Josefsson <simon@josefsson.org> * flow-fill.el (fill-flowed): Don't flow "-- " lines. (fill-flowed): Make "quote-depth wins" rule work when first line is at level 0.
104 lines
3.3 KiB
EmacsLisp
104 lines
3.3 KiB
EmacsLisp
;;; flow-fill.el --- interprete RFC2646 "flowed" text
|
|
|
|
;; Copyright (C) 2000 Free Software Foundation, Inc.
|
|
|
|
;; Author: Simon Josefsson <jas@pdc.kth.se>
|
|
;; Keywords: mail
|
|
|
|
;; 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, 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 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:
|
|
|
|
;; This implement decoding of RFC2646 formatted text, including the
|
|
;; quoted-depth wins rules.
|
|
|
|
;; Theory of operation: search for lines ending with SPC, save quote
|
|
;; length of line, remove SPC and concatenate line with the following
|
|
;; line if quote length of following line matches current line.
|
|
|
|
;; When no further concatenations are possible, we've found a
|
|
;; paragraph and we let `fill-region' fill the long line into several
|
|
;; lines with the quote prefix as `fill-prefix'.
|
|
|
|
;; Todo: encoding, implement basic `fill-region' (Emacs and XEmacs
|
|
;; implementations differ..)
|
|
|
|
;; History:
|
|
|
|
;; 2000-02-17 posted on ding mailing list
|
|
;; 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
|
|
(defalias 'fill-flowed-point-at-bol
|
|
(if (fboundp 'point-at-bol)
|
|
'point-at-bol
|
|
'line-beginning-position))
|
|
|
|
(defalias 'fill-flowed-point-at-eol
|
|
(if (fboundp 'point-at-eol)
|
|
'point-at-eol
|
|
'line-end-position)))
|
|
|
|
(defun fill-flowed (&optional buffer)
|
|
(save-excursion
|
|
(set-buffer (or (current-buffer) buffer))
|
|
(goto-char (point-min))
|
|
(while (re-search-forward " $" nil t)
|
|
(when (save-excursion
|
|
(beginning-of-line)
|
|
(looking-at "^\\(>*\\)\\( ?\\)"))
|
|
(let ((quote (match-string 1)) sig)
|
|
(if (string= quote "")
|
|
(setq quote nil))
|
|
(when (and quote (string= (match-string 2) ""))
|
|
(save-excursion
|
|
;; insert SP after quote for pleasant reading of quoted lines
|
|
(beginning-of-line)
|
|
(when (> (skip-chars-forward ">") 0)
|
|
(insert " "))))
|
|
(while (and (save-excursion
|
|
(ignore-errors (backward-char 3))
|
|
(setq sig (looking-at "-- "))
|
|
(looking-at "[^-][^-] "))
|
|
(save-excursion
|
|
(unless (eobp)
|
|
(forward-char 1)
|
|
(looking-at (format "^\\(%s\\)\\([^>]\\)" (or quote " ?"))))))
|
|
(save-excursion
|
|
(replace-match (if (string= (match-string 2) " ")
|
|
"" "\\2")))
|
|
(backward-delete-char -1)
|
|
(end-of-line))
|
|
(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)
|
|
|
|
;;; flow-fill.el ends here
|