[PATCH v1 1/2] emacs: show: Align the colon in header display

[David Edmondson <dme@dme.org>]

When displaying headers, insert leading space so that the `:' in all
of the headers shown is aligned.
---
 emacs/notmuch-show.el | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 364004b8..677405ba 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -345,11 +345,11 @@ operation on the contents of the current buffer."
 
 (defun notmuch-show-fontify-header ()
   (let ((face (cond
-	       ((looking-at "[Tt]o:")
+	       ((looking-at " *[Tt]o:")
 		'message-header-to)
-	       ((looking-at "[Bb]?[Cc][Cc]:")
+	       ((looking-at " *[Bb]?[Cc][Cc]:")
 		'message-header-cc)
-	       ((looking-at "[Ss]ubject:")
+	       ((looking-at " *[Ss]ubject:")
 		'message-header-subject)
 	       (t
 		'message-header-other))))
@@ -362,7 +362,7 @@ operation on the contents of the current buffer."
 (defun notmuch-show-colour-headers ()
   "Apply some colouring to the current headers."
   (goto-char (point-min))
-  (while (looking-at "^[A-Za-z][-A-Za-z0-9]*:")
+  (while (looking-at "^ *[A-Za-z][-A-Za-z0-9]*:")
     (notmuch-show-fontify-header)
     (forward-line)))
 
@@ -462,7 +462,8 @@ message at DEPTH in the current thread."
 
 (defun notmuch-show-insert-header (header header-value)
   "Insert a single header."
-  (insert header ": " (notmuch-sanitize header-value) "\n"))
+  ;; `7' because `Subject' is the longest header.
+  (insert (format "%7s: %s\n" header (notmuch-sanitize header-value))))
 
 (defun notmuch-show-insert-headers (headers)
   "Insert the headers of the current message."
-- 
2.11.0