--- /dev/null
+;;; coolj.el --- automatically wrap long lines -*- coding:utf-8 -*-
+
+;; Copyright (C) 2000, 2001, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+
+;; Authors: Kai Grossjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE>
+;; Alex Schroeder <alex@gnu.org>
+;; Chong Yidong <cyd@stupidchicken.com>
+;; Maintainer: David Edmondson <dme@dme.org>
+;; Keywords: convenience, wp
+
+;; This file is not 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 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
+;; 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. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; This is a simple derivative of some functionality from
+;;; `longlines.el'. The key difference is that this version will
+;;; insert a prefix at the head of each wrapped line. The prefix is
+;;; calculated from the originating long line.
+
+;;; No minor-mode is provided, the caller is expected to call
+;;; `coolj-wrap-region' to wrap the region of interest.
+
+;;; Code:
+
+(defgroup coolj nil
+ "Wrapping of long lines with prefix."
+ :group 'fill)
+
+(defcustom coolj-wrap-follows-window-size t
+ "Non-nil means wrap text to the window size.
+Otherwise respect `fill-column'."
+ :group 'coolj
+ :type 'boolean)
+
+(defcustom coolj-line-prefix-regexp "^\\(>+ \\)*"
+ "Regular expression that matches line prefixes."
+ :group 'coolj
+ :type 'regexp)
+
+(defvar coolj-wrap-point nil)
+
+(make-variable-buffer-local 'coolj-wrap-point)
+
+(defun coolj-determine-prefix ()
+ "Determine the prefix for the current line."
+ (save-excursion
+ (beginning-of-line)
+ (if (re-search-forward coolj-line-prefix-regexp nil t)
+ (buffer-substring (match-beginning 0) (match-end 0))
+ "")))
+
+(defun coolj-wrap-buffer ()
+ "Wrap the current buffer."
+ (coolj-wrap-region (point-min) (point-max)))
+
+(defun coolj-wrap-region (beg end)
+ "Wrap each successive line, starting with the line before BEG.
+Stop when we reach lines after END that don't need wrapping, or the
+end of the buffer."
+ (setq fill-column (if coolj-wrap-follows-window-size
+ (window-width)
+ fill-column))
+ (let ((mod (buffer-modified-p)))
+ (setq coolj-wrap-point (point))
+ (goto-char beg)
+ (forward-line -1)
+ ;; Two successful coolj-wrap-line's in a row mean successive
+ ;; lines don't need wrapping.
+ (while (null (and (coolj-wrap-line)
+ (or (eobp)
+ (and (>= (point) end)
+ (coolj-wrap-line))))))
+ (goto-char coolj-wrap-point)
+ (set-buffer-modified-p mod)))
+
+(defun coolj-wrap-line ()
+ "If the current line needs to be wrapped, wrap it and return nil.
+If wrapping is performed, point remains on the line. If the line does
+not need to be wrapped, move point to the next line and return t."
+ (let ((prefix (coolj-determine-prefix)))
+ (if (coolj-set-breakpoint prefix)
+ (progn
+ (insert-before-markers ?\n)
+ (backward-char 1)
+ (delete-char -1)
+ (forward-char 1)
+ (insert-before-markers prefix)
+ nil)
+ (forward-line 1)
+ t)))
+
+(defun coolj-set-breakpoint (prefix)
+ "Place point where we should break the current line, and return t.
+If the line should not be broken, return nil; point remains on the
+line."
+ (move-to-column fill-column)
+ (if (and (re-search-forward "[^ ]" (line-end-position) 1)
+ (> (current-column) fill-column))
+ ;; This line is too long. Can we break it?
+ (or (coolj-find-break-backward prefix)
+ (progn (move-to-column fill-column)
+ (coolj-find-break-forward)))))
+
+(defun coolj-find-break-backward (prefix)
+ "Move point backward to the first available breakpoint and return t.
+If no breakpoint is found, return nil."
+ (let ((end-of-prefix (+ (line-beginning-position) (length prefix))))
+ (and (search-backward " " end-of-prefix 1)
+ (save-excursion
+ (skip-chars-backward " " end-of-prefix)
+ (null (bolp)))
+ (progn (forward-char 1)
+ (if (and fill-nobreak-predicate
+ (run-hook-with-args-until-success
+ 'fill-nobreak-predicate))
+ (progn (skip-chars-backward " " end-of-prefix)
+ (coolj-find-break-backward prefix))
+ t)))))
+
+(defun coolj-find-break-forward ()
+ "Move point forward to the first available breakpoint and return t.
+If no break point is found, return nil."
+ (and (search-forward " " (line-end-position) 1)
+ (progn (skip-chars-forward " " (line-end-position))
+ (null (eolp)))
+ (if (and fill-nobreak-predicate
+ (run-hook-with-args-until-success
+ 'fill-nobreak-predicate))
+ (coolj-find-break-forward)
+ t)))
+
+(provide 'coolj)
"A list of functions called to decorate the headers listed in
`notmuch-message-headers'.")
-(defvar notmuch-show-hook '(notmuch-show-pretty-hook)
+(defcustom notmuch-show-hook '(notmuch-show-pretty-hook)
"A list of functions called after populating a
-`notmuch-show' buffer.")
-
-(defvar notmuch-show-insert-text/plain-hook '(notmuch-wash-text/plain-citations)
- "A list of functions called to clean up text/plain body parts.")
+`notmuch-show' buffer."
+ :group 'notmuch
+ :type 'hook
+ :options '(notmuch-show-pretty-hook
+ notmuch-show-turn-off-word-wrap))
+
+(defcustom notmuch-show-insert-text/plain-hook
+ '(notmuch-wash-tidy-citations
+ notmuch-wash-compress-blanks
+ notmuch-wash-markup-citations)
+ "A list of functions called to clean up text/plain body parts."
+ :group 'notmuch
+ :type 'hook
+ :options '(notmuch-wash-wrap-long-lines
+ notmuch-wash-tidy-citations
+ notmuch-wash-compress-blanks
+ notmuch-wash-markup-citations))
(defun notmuch-show-pretty-hook ()
(goto-address-mode 1)
(visual-line-mode))
+(defun notmuch-show-turn-off-word-wrap ()
+ ;; `toggle-word-wrap' outputs a message, which is distracting.
+ (setq word-wrap nil))
+
(defmacro with-current-notmuch-show-message (&rest body)
"Evaluate body with current buffer set to the text of current message"
`(save-excursion
;; notmuch-wash.el --- cleaning up message bodies
;;
;; Copyright © Carl Worth
+;; Copyright © David Edmondson
;;
;; This file is part of Notmuch.
;;
;; along with Notmuch. If not, see <http://www.gnu.org/licenses/>.
;;
;; Authors: Carl Worth <cworth@cworth.org>
+;; David Edmondson <dme@dme.org>
+
+(require 'coolj)
+
+;;
(defvar notmuch-wash-signature-regexp
"^\\(-- ?\\|_+\\)$"
'invisibility-spec invis-spec
:type button-type))))
-(defun notmuch-wash-text/plain-citations (depth)
+(defun notmuch-wash-markup-citations (depth)
"Markup citations, and up to one signature in the buffer."
(goto-char (point-min))
(beginning-of-line)
;;
+(defun notmuch-wash-compress-blanks (depth)
+ "Compress successive blank lines into one blank line. Remove
+any leading or trailing blank lines."
+
+ ;; Algorithm derived from `article-strip-multiple-blank-lines' in
+ ;; `gnus-art.el'.
+
+ ;; Make all blank lines empty.
+ (goto-char (point-min))
+ (while (re-search-forward "^[[:space:]\t]+$" nil t)
+ (replace-match "" nil t))
+
+ ;; Replace multiple empty lines with a single empty line.
+ (goto-char (point-min))
+ (while (re-search-forward "^\n\\(\n+\\)" nil t)
+ (delete-region (match-beginning 1) (match-end 1)))
+
+ ;; Remove a leading blank line.
+ (goto-char (point-min))
+ (if (looking-at "\n")
+ (delete-region (match-beginning 0) (match-end 0)))
+
+ ;; Remove a trailing blank line.
+ (goto-char (point-max))
+ (if (looking-at "\n")
+ (delete-region (match-beginning 0) (match-end 0))))
+
+;;
+
+(defun notmuch-wash-tidy-citations (depth)
+ "Clean up citations."
+
+ ;; Remove lines of repeated citation leaders with no other content.
+ (goto-char (point-min))
+ (while (re-search-forward "\\(^>[> ]*\n\\)\\{2,\\}" nil t)
+ (replace-match "\\1"))
+
+ ;; Remove citation leaders standing alone before a block of cited
+ ;; text.
+ (goto-char (point-min))
+ (while (re-search-forward "\\(\n\\|^[^>].*\\)\n\\(^>[> ]*\n\\)" nil t)
+ (replace-match "\\1\n"))
+
+ ;; Remove citation trailers standing alone after a block of cited
+ ;; text.
+ (goto-char (point-min))
+ (while (re-search-forward "\\(^>[> ]*\n\\)\\(^$\\|^[^>].*\\)" nil t)
+ (replace-match "\\2"))
+
+ ;; Remove blank lines between "Bill wrote:" and the citation.
+ (goto-char (point-min))
+ (while (re-search-forward "^\\([^>].*\\):\n\n>" nil t)
+ (replace-match "\\1:\n>")))
+
+;;
+
+(defun notmuch-wash-wrap-long-lines (depth)
+ "Wrap text in the region whilst maintaining the correct prefix."
+ (let ((coolj-wrap-follows-window-size nil)
+ (fill-column (- (window-width) depth)))
+ (coolj-wrap-region (point-min) (point-max))))
+
+;;
+
(provide 'notmuch-wash)
projects / notmuch / commitdiff