X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=emacs%2Fnotmuch-wash.el;h=5c1e83009eec56a4d5073806be2d9ea93c2d4a94;hp=92f07c5000751fb394d45c26cb2593902e594e6b;hb=3f9d73884ee7c26797a1528b89e1fe63aadc3271;hpb=4a9d0ac1472f7bd8b785256366720e3e6aa2855f

diff --git a/emacs/notmuch-wash.el b/emacs/notmuch-wash.el
index 92f07c50..5c1e8300 100644
--- a/emacs/notmuch-wash.el
+++ b/emacs/notmuch-wash.el
@@ -137,7 +137,7 @@ collapse the remaining lines into a button.")
     (format label-format lines-count)))
 
 (defun notmuch-wash-region-to-button (msg beg end type prefix)
-  "Auxilary function to do the actual making of overlays and buttons
+  "Auxiliary function to do the actual making of overlays and buttons
 
 BEG and END are buffer locations. TYPE should a string, either
 \"citation\" or \"signature\". PREFIX is some arbitrary text to
@@ -290,6 +290,44 @@ When doing so, maintaining citation leaders in the wrapped text."
 
 (defvar diff-file-header-re) ; From `diff-mode.el'.
 
+(defun notmuch-wash-subject-to-filename (subject &optional maxlen)
+  "Convert a mail SUBJECT into a filename.
+
+The resulting filename is similar to the names generated by \"git
+format-patch\", without the leading patch sequence number
+\"0001-\" and \".patch\" extension. Any leading \"[PREFIX]\"
+style strings are removed prior to conversion.
+
+Optional argument MAXLEN is the maximum length of the resulting
+filename, before trimming any trailing . and - characters."
+  (let* ((s (replace-regexp-in-string "^ *\\(\\[[^]]*\\] *\\)*" "" subject))
+	 (s (replace-regexp-in-string "[^A-Za-z0-9._]+" "-" s))
+	 (s (replace-regexp-in-string "\\.+" "." s))
+	 (s (if maxlen (substring s 0 (min (length s) maxlen)) s))
+	 (s (replace-regexp-in-string "[.-]*$" "" s)))
+    s))
+
+(defun notmuch-wash-subject-to-patch-sequence-number (subject)
+  "Convert a patch mail SUBJECT into a patch sequence number.
+
+Return the patch sequence number N from the last \"[PATCH N/M]\"
+style prefix in SUBJECT, or nil if such a prefix can't be found."
+  (when (string-match
+	 "^ *\\(\\[[^]]*\\] *\\)*\\[[^]]*?\\([0-9]+\\)/[0-9]+[^]]*\\].*"
+	 subject)
+      (string-to-number (substring subject (match-beginning 2) (match-end 2)))))
+
+(defun notmuch-wash-subject-to-patch-filename (subject)
+  "Convert a patch mail SUBJECT into a filename.
+
+The resulting filename is similar to the names generated by \"git
+format-patch\". If the patch mail was generated and sent using
+\"git format-patch/send-email\", this should re-create the
+original filename the sender had."
+  (format "%04d-%s.patch"
+	  (or (notmuch-wash-subject-to-patch-sequence-number subject) 1)
+	  (notmuch-wash-subject-to-filename subject 52)))
+
 (defun notmuch-wash-convert-inline-patch-to-part (msg depth)
   "Convert an inline patch into a fake 'text/x-diff' attachment.
 
@@ -313,10 +351,13 @@ for error."
 	      (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-type "inline-patch-fake-part"))
 	    (setq part (plist-put part :content (buffer-string)))
 	    (setq part (plist-put part :id -1))
-	    (setq part (plist-put part :filename "inline patch"))
+	    (setq part (plist-put part :filename
+				  (notmuch-wash-subject-to-patch-filename
+				   (plist-get
+				    (plist-get msg :headers) :Subject))))
 	    (delete-region (point-min) (point-max))
 	    (notmuch-show-insert-bodypart nil part depth))))))