+(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))))
+
+;;
+