emacs: Use `mm-display-part' when possible

For parts that the mm-decode/mm-view functions can inline and we have
the content, use `mm-display-part' to insert the part in the
buffer.

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index f5822a0314de169834391006e45aebcda599139b..7d25dd570f4e600eedfc1563a5eec37e932494a2 100644 (file)
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -24,6 +24,7 @@
 (require 'cl)
 (require 'mm-view)
 (require 'message)
+(require 'mm-decode)
 
 (require 'notmuch-lib)
 (require 'notmuch-query)
@@ -214,6 +215,24 @@ message at DEPTH in the current thread."
 
 ;; Functions handling particular MIME parts.
 
+(defun notmuch-show-mm-display-part-inline (part content-type)
+  "Use the mm-decode/mm-view functions to display a part inline, if possible."
+  (let ((handle (mm-make-handle nil (list content-type))))
+    (if (and (mm-inlinable-p handle)
+            (mm-inlined-p handle))
+       (progn
+         (insert (with-temp-buffer
+                   (let ((display-buffer (current-buffer)))
+                     (with-temp-buffer
+                       (let ((work-buffer (current-buffer)))
+                         (insert (plist-get part :content))
+                         (set-buffer display-buffer)
+                         (mm-display-part (mm-make-handle work-buffer
+                                                          (list content-type)))
+                         (buffer-string))))))
+         t)))
+  nil)
+
 (defun notmuch-show-insert-part-text/plain (part content-type nth depth)
   (let ((start (point)))
     ;; If this text/plain part is not the first part in the message,
@@ -227,16 +246,11 @@ message at DEPTH in the current thread."
        (run-hook-with-args 'notmuch-show-insert-text/plain-hook depth))))
   t)
 
-(defun notmuch-show-insert-part-text/* (part content-type nth depth)
-  ;; Handle all text types other than text/html.
-  (if (string-equal "text/html" content-type)
-      nil
-    (notmuch-show-insert-part-header content-type (plist-get part :filename))
-    (insert (plist-get part :content))
-    t))
-
 (defun notmuch-show-insert-part-*/* (part content-type nth depth)
   (notmuch-show-insert-part-header content-type (plist-get part :filename))
+  ;; If we have the content for the part, attempt to inline it.
+  (if (plist-get part :content)
+      (notmuch-show-mm-display-part-inline part content-type))
   t)
 
 ;; Functions for determining how to handle MIME parts.