[notmuch] [PATCH 2/2] add some very rudimentary support for handling html parts

[Alexander Botero-Lowry]

I was planning to be committing super awesome mime-handling support
that would make notmuch rival every mail program ever for pure mime
awesomeness. It turns out, that mime is confusing and hard, and the
mm-* functions do awesome things like provide different forms based
on the number and composition of mime-parts in a document, so I set
my first-pass goal a bit lower. What this does, is if there is an
html mime-part in the message and it's the first part, it gets inlined
using `mm-display-part'. This should solve the biggest problem I was
facing, which is HTML only messages that I have to go into the awful
mime-mode to view.

This still even leaves in the Non-text part: message and all.
---
 notmuch.el |   41 ++++++++++++++++++++++++++++++++---------
 1 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/notmuch.el b/notmuch.el
index 1853762..fa061c3 100644
--- a/notmuch.el
+++ b/notmuch.el
@@ -554,29 +554,52 @@ which this thread was originally shown."
                     (goto-char end))))))
       (forward-line))))
 
-(defun notmuch-show-markup-part (beg end depth)
+(defun notmuch-show-markup-part (beg end depth mime-message)
   (if (re-search-forward notmuch-show-part-begin-regexp nil t)
       (progn
+        (if (eq mime-message nil)
+            (let ((filename (notmuch-show-get-filename)))
+              (with-temp-buffer
+                (insert-file-contents filename nil nil nil t)
+                (setq mime-message (mm-dissect-buffer)))))
 	(forward-line)
-	(let ((beg (point-marker)))
+	(let ((part-beg (point-marker)))
 	  (re-search-forward notmuch-show-part-end-regexp)
-	  (let ((end (copy-marker (match-beginning 0))))
-	    (goto-char end)
+
+	  (let ((part-end (copy-marker (match-beginning 0))))
+	    (goto-char part-end)
 	    (if (not (bolp))
 		(insert "\n"))
-	    (indent-rigidly beg end depth)
-	    (notmuch-show-markup-citations-region beg end depth)
+	    (indent-rigidly part-beg part-end depth)
+            (save-excursion
+              (goto-char part-beg)
+              (forward-line -1)
+              (beginning-of-line)
+              (let ((handle-type (mm-handle-type mime-message))
+                    mime-type)
+                (if (sequencep (car handle-type))
+                    (setq mime-type (car handle-type))
+                  (setq mime-type (car (car (cdr handle-type))))
+                  )
+                (if (equal mime-type "text/html")
+                    (mm-display-part mime-message))))
+
+	    (notmuch-show-markup-citations-region part-beg part-end depth)
 	    ; Advance to the next part (if any) (so the outer loop can
 	    ; determine whether we've left the current message.
 	    (if (re-search-forward notmuch-show-part-begin-regexp nil t)
 		(beginning-of-line)))))
-    (goto-char end)))
+    (goto-char end))
+  mime-message)
 
 (defun notmuch-show-markup-parts-region (beg end depth)
   (save-excursion
     (goto-char beg)
-    (while (< (point) end)
-      (notmuch-show-markup-part beg end depth))))
+    (let (mime-message)
+      (while (< (point) end)
+        (setq mime-message
+              (notmuch-show-markup-part
+               beg end depth mime-message))))))
 
 (defun notmuch-show-markup-body (depth btn)
   (re-search-forward notmuch-show-body-begin-regexp)
-- 
1.6.5.2