X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=emacs%2Fnotmuch-wash.el;h=46e182435ea24163aafbbf3b436baf7a963002ad;hp=54a380a1ba426f103115727da48590ea26ab527e;hb=fc73737ff5651c1a270232dcd982f9d1ee0b442f;hpb=8cbb5114a20c1217f23977fd5edca99a0b7a2955

diff --git a/emacs/notmuch-wash.el b/emacs/notmuch-wash.el
index 54a380a1..46e18243 100644
--- a/emacs/notmuch-wash.el
+++ b/emacs/notmuch-wash.el
@@ -1,6 +1,7 @@
 ;; notmuch-wash.el --- cleaning up message bodies
 ;;
 ;; Copyright © Carl Worth
+;; Copyright © David Edmondson
 ;;
 ;; This file is part of Notmuch.
 ;;
@@ -18,6 +19,13 @@
 ;; along with Notmuch.  If not, see <http://www.gnu.org/licenses/>.
 ;;
 ;; Authors: Carl Worth <cworth@cworth.org>
+;;          David Edmondson <dme@dme.org>
+
+(require 'coolj)
+
+(declare-function notmuch-show-insert-bodypart "notmuch-show" (msg part depth))
+
+;;
 
 (defvar notmuch-wash-signature-regexp
   "^\\(-- ?\\|_+\\)$"
@@ -77,6 +85,9 @@ collapse the remaining lines into a button.")
   'help-echo "mouse-1, RET: Show signature"
   :supertype 'notmuch-wash-button-invisibility-toggle-type)
 
+(defun notmuch-wash-region-isearch-show (overlay)
+  (remove-from-invisibility-spec (overlay-get overlay 'invisible)))
+
 (defun notmuch-wash-region-to-button (beg end type prefix button-text)
   "Auxilary function to do the actual making of overlays and buttons
 
@@ -96,6 +107,7 @@ is what to put on the button."
 					  type "-toggle-type"))))
     (add-to-invisibility-spec invis-spec)
     (overlay-put overlay 'invisible invis-spec)
+    (overlay-put overlay 'isearch-open-invisible #'notmuch-wash-region-isearch-show)
     (goto-char (1+ end))
     (save-excursion
       (goto-char (1- beg))
@@ -104,8 +116,8 @@ is what to put on the button."
 		     'invisibility-spec invis-spec
 		     :type button-type))))
 
-(defun notmuch-wash-text/plain-citations (depth)
-  "Markup citations, and up to one signature in the buffer."
+(defun notmuch-wash-excerpt-citations (depth)
+  "Excerpt citations and up to one signature."
   (goto-char (point-min))
   (beginning-of-line)
   (while (and (< (point) (point-max))
@@ -147,4 +159,114 @@ is what to put on the button."
 
 ;;
 
+(defun notmuch-wash-elide-blank-lines (depth)
+  "Elide leading, trailing and successive 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]+$" nil t)
+    (replace-match "" nil t))
+
+  ;; Replace multiple empty lines with a single empty line.
+  (goto-char (point-min))
+  (while (re-search-forward "^\n\\(\n+\\)" nil t)
+    (delete-region (match-beginning 1) (match-end 1)))
+
+  ;; Remove a leading blank line.
+  (goto-char (point-min))
+  (if (looking-at "\n")
+      (delete-region (match-beginning 0) (match-end 0)))
+
+  ;; Remove a trailing blank line.
+  (goto-char (point-max))
+  (if (looking-at "\n")
+      (delete-region (match-beginning 0) (match-end 0))))
+
+;;
+
+(defun notmuch-wash-tidy-citations (depth)
+  "Improve the display of cited regions of a message.
+
+Perform four transformations on the message body:
+
+- Remove lines of repeated citation leaders with no other
+  content,
+- Remove citation leaders standing alone before a block of cited
+  text,
+- Remove citation trailers standing alone after a block of cited
+  text."
+
+  ;; Remove lines of repeated citation leaders with no other content.
+  (goto-char (point-min))
+  (while (re-search-forward "\\(^>[> ]*\n\\)\\{2,\\}" nil t)
+    (replace-match "\\1"))
+
+  ;; Remove citation leaders standing alone before a block of cited
+  ;; text.
+  (goto-char (point-min))
+  (while (re-search-forward "\\(\n\\|^[^>].*\\)\n\\(^>[> ]*\n\\)" nil t)
+    (replace-match "\\1\n"))
+
+  ;; Remove citation trailers standing alone after a block of cited
+  ;; text.
+  (goto-char (point-min))
+  (while (re-search-forward "\\(^>[> ]*\n\\)\\(^$\\|^[^>].*\\)" nil t)
+    (replace-match "\\2")))
+
+;;
+
+(defun notmuch-wash-wrap-long-lines (depth)
+  "Wrap any long lines in the message to the width of the window.
+
+When doing so, maintaining citation leaders in the wrapped text."
+
+  (let ((coolj-wrap-follows-window-size nil)
+	(fill-column (- (window-width)
+			depth
+			;; 2 to avoid poor interaction with
+			;; `word-wrap'.
+			2)))
+    (coolj-wrap-region (point-min) (point-max))))
+
+;;
+
+(require 'diff-mode)
+
+(defvar diff-file-header-re) ; From `diff-mode.el'.
+
+(defun notmuch-wash-convert-inline-patch-to-part (depth)
+  "Convert an inline patch into a fake 'text/x-diff' attachment.
+
+Given that this function guesses whether a buffer includes a
+patch and then guesses the extent of the patch, there is scope
+for error."
+
+  (goto-char (point-min))
+  (if (re-search-forward diff-file-header-re nil t)
+      (progn
+	(beginning-of-line -1)
+	(let ((patch-start (point))
+	      (patch-end (point-max))
+	      part)
+	  (goto-char patch-start)
+	  (if (or
+	       ;; Patch ends with signature.
+	       (re-search-forward notmuch-wash-signature-regexp nil t)
+	       ;; Patch ends with bugtraq comment.
+	       (re-search-forward "^\\*\\*\\* " nil t))
+	      (setq patch-end (match-beginning 0)))
+	  (save-restriction
+	    (narrow-to-region patch-start patch-end)
+	    (setq part (plist-put part :content-type "text/x-diff"))
+	    (setq part (plist-put part :content (buffer-string)))
+	    (setq part (plist-put part :id -1))
+	    (setq part (plist-put part :filename "inline patch"))
+	    (delete-region (point-min) (point-max))
+	    (notmuch-show-insert-bodypart nil part depth))))))
+
+;;
+
 (provide 'notmuch-wash)