notmuch.el: Add keybinding to toggle display of message body and headers.

I really missed this feature. Added notmuch-show-toggle-current-body and
notmuch-show-toggle-current-header and bind them to 'b' and 'h'.

Signed-off-by: Kan-Ru Chen <kanru@kanru.info>

1 files changed, 22 insertions, 0 deletions

diff --git a/notmuch.el b/notmuch.el
index 97914f2c..30ab2e8f 100644
--- a/notmuch.el
+++ b/notmuch.el
@@ -67,6 +67,8 @@
     (define-key map "w" 'notmuch-show-save-attachments)
     (define-key map "V" 'notmuch-show-view-raw-message)
     (define-key map "v" 'notmuch-show-view-all-mime-parts)
+    (define-key map "b" 'notmuch-show-toggle-current-body)
+    (define-key map "h" 'notmuch-show-toggle-current-header)
     (define-key map "-" 'notmuch-show-remove-tag)
     (define-key map "+" 'notmuch-show-add-tag)
     (define-key map "X" 'notmuch-show-mark-read-then-archive-then-exit)
@@ -578,6 +580,26 @@ which this thread was originally shown."
   (force-window-update)
   (redisplay t))
 
+(defun notmuch-show-toggle-current-body ()
+  "Toggle the current message body."
+  (interactive)
+  (save-excursion
+    (notmuch-show-move-to-current-message-summary-line)
+    (unless (button-at (point))
+      (notmuch-show-next-button))
+    (push-button))
+  )
+
+(defun notmuch-show-toggle-current-header ()
+  (interactive)
+  (save-excursion
+    (notmuch-show-move-to-current-message-summary-line)
+    (next-line)
+    (unless (button-at (point))
+      (notmuch-show-next-button))
+    (push-button))
+  )
+
 (define-button-type 'notmuch-button-invisibility-toggle-type
   'action 'notmuch-toggle-invisible-action
   'follow-link t