;;; flow-fill.el --- interpret RFC2646 "flowed" text
-;; Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+;; Copyright (C) 2000-2015 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
+;; 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.
+;; the Free Software Foundation, either version 3 of the License, 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
;; 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(defcustom fill-flowed-display-column 'fill-column
"Column beyond which format=flowed lines are wrapped, when displayed.
This can be a Lisp expression or an integer."
+ :version "22.1"
+ :group 'mime-display
:type '(choice (const :tag "Standard `fill-column'" fill-column)
(const :tag "Fit Window" (- (window-width) 5))
(sexp)
"Column beyond which format=flowed lines are wrapped, in outgoing messages.
This can be a Lisp expression or an integer.
RFC 2646 suggests 66 characters for readability."
+ :version "22.1"
+ :group 'mime-display
:type '(choice (const :tag "Standard fill-column" fill-column)
(const :tag "RFC 2646 default (66)" 66)
(sexp)
;; Go through each paragraph, filling it and adding SPC
;; as the last character on each line.
(while (setq end (text-property-any start (point-max) 'hard 't))
- (let ((fill-column (eval fill-flowed-encode-column)))
- (fill-region start end t 'nosqueeze 'to-eop))
- (goto-char start)
- ;; `fill-region' probably distorted end.
- (setq end (text-property-any start (point-max) 'hard 't))
- (while (and (< (point) end)
- (re-search-forward "$" (1- end) t))
- (insert " ")
- (setq end (1+ end))
- (forward-char))
- (goto-char (setq start (1+ end)))))
+ (save-restriction
+ (narrow-to-region start end)
+ (let ((fill-column (eval fill-flowed-encode-column)))
+ (fill-flowed-fill-buffer))
+ (goto-char (point-min))
+ (while (re-search-forward "\n" nil t)
+ (replace-match " \n" t t))
+ (goto-char (setq start (1+ (point-max)))))))
t)))
+(defun fill-flowed-fill-buffer ()
+ (let ((prefix nil)
+ (prev-prefix nil)
+ (start (point-min)))
+ (goto-char (point-min))
+ (while (not (eobp))
+ (setq prefix (and (looking-at "[> ]+")
+ (match-string 0)))
+ (if (equal prefix prev-prefix)
+ (forward-line 1)
+ (save-restriction
+ (narrow-to-region start (point))
+ (let ((fill-prefix prev-prefix))
+ (fill-region (point-min) (point-max) t 'nosqueeze 'to-eop))
+ (goto-char (point-max)))
+ (setq prev-prefix prefix
+ start (point))))
+ (save-restriction
+ (narrow-to-region start (point))
+ (let ((fill-prefix prev-prefix))
+ (fill-region (point-min) (point-max) t 'nosqueeze 'to-eop)))))
+
;;;###autoload
-(defun fill-flowed (&optional buffer)
- (save-excursion
- (set-buffer (or (current-buffer) buffer))
+(defun fill-flowed (&optional buffer delete-space)
+ (with-current-buffer (or (current-buffer) buffer)
+ (goto-char (point-min))
+ ;; Remove space stuffing.
+ (while (re-search-forward "^\\( \\|>+ $\\)" nil t)
+ (delete-char -1)
+ (forward-line 1))
(goto-char (point-min))
(while (re-search-forward " $" nil t)
(when (save-excursion
(replace-match (if (string= (match-string 2) " ")
"" "\\2")))
(backward-delete-char -1)
+ (when delete-space
+ (delete-char -1))
(end-of-line))
(unless sig
(condition-case nil
(let ((fill-prefix (when quote (concat quote " ")))
(fill-column (eval fill-flowed-display-column))
- filladapt-mode)
+ filladapt-mode
+ adaptive-fill-mode)
(fill-region (point-at-bol)
(min (1+ (point-at-eol))
(point-max))
;; Test vectors.
-(eval-when-compile
- (defvar show-trailing-whitespace))
+(defvar show-trailing-whitespace)
(defvar fill-flowed-encode-tests
- '(
+ `(
;; The syntax of each list element is:
;; (INPUT . EXPECTED-OUTPUT)
- ("> Thou villainous ill-breeding spongy dizzy-eyed
-> reeky elf-skinned pigeon-egg!
->> Thou artless swag-bellied milk-livered
->> dismal-dreaming idle-headed scut!
->>> Thou errant folly-fallen spleeny reeling-ripe
->>> unmuzzled ratsbane!
->>>> Henceforth, the coding style is to be strictly
->>>> enforced, including the use of only upper case.
->>>>> I've noticed a lack of adherence to the coding
->>>>> styles, of late.
->>>>>> Any complaints?
-" . "> Thou villainous ill-breeding spongy dizzy-eyed reeky elf-skinned
-> pigeon-egg!
->> Thou artless swag-bellied milk-livered dismal-dreaming idle-headed
->> scut!
->>> Thou errant folly-fallen spleeny reeling-ripe unmuzzled ratsbane!
->>>> Henceforth, the coding style is to be strictly enforced,
->>>> including the use of only upper case.
->>>>> I've noticed a lack of adherence to the coding styles, of late.
->>>>>> Any complaints?
-")
-; ("
-;> foo
-;>
-;>
-;> bar
-;" . "
-;> foo bar
-;")
+ (,(concat
+ "> Thou villainous ill-breeding spongy dizzy-eyed \n"
+ "> reeky elf-skinned pigeon-egg! \n"
+ ">> Thou artless swag-bellied milk-livered \n"
+ ">> dismal-dreaming idle-headed scut!\n"
+ ">>> Thou errant folly-fallen spleeny reeling-ripe \n"
+ ">>> unmuzzled ratsbane!\n"
+ ">>>> Henceforth, the coding style is to be strictly \n"
+ ">>>> enforced, including the use of only upper case.\n"
+ ">>>>> I've noticed a lack of adherence to the coding \n"
+ ">>>>> styles, of late.\n"
+ ">>>>>> Any complaints?")
+ .
+ ,(concat
+ "> Thou villainous ill-breeding spongy dizzy-eyed reeky elf-skinned\n"
+ "> pigeon-egg! \n"
+ ">> Thou artless swag-bellied milk-livered dismal-dreaming idle-headed\n"
+ ">> scut!\n"
+ ">>> Thou errant folly-fallen spleeny reeling-ripe unmuzzled ratsbane!\n"
+ ">>>> Henceforth, the coding style is to be strictly enforced,\n"
+ ">>>> including the use of only upper case.\n"
+ ">>>>> I've noticed a lack of adherence to the coding styles, of late.\n"
+ ">>>>>> Any complaints?\n"
+ ))
+ ;; (,(concat
+ ;; "\n"
+ ;; "> foo\n"
+ ;; "> \n"
+ ;; "> \n"
+ ;; "> bar\n")
+ ;; .
+ ;; ,(concat
+ ;; "\n"
+ ;; "> foo bar\n"))
))
(defun fill-flowed-test ()
(provide 'flow-fill)
-;;; arch-tag: addc0040-bc53-4f17-b4bc-1eb44eed6f0b
;;; flow-fill.el ends here
projects / gnus / blobdiff