git-blame.el: Add (require 'format-spec)

c5022f57 (git-blame.el: Change how blame information is shown,
2009-09-29) taught the "M-x git-blame" mode to format its output
in a more interesting way, making use of the format-spec function.

format-spec is included in Emacs 23 and is a useful function.
Older emacsen can get it from Gnus.  In all emacsen, we need
to 'require it before use to avoid warnings:

 git-blame.el:483:1:Warning: the function `format-spec' is not known to be
     defined.

Reported-by: Sergei Organov <osv@javad.com>
Reported-by: Kevin Ryde <user42@zip.com.au>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/emacs/git-blame.el b/contrib/emacs/git-blame.el
index 7f4c7929784f8e2d8b24b0eaf9f05a2f10c1c6eb..d351cfb6e7e818f5f760e83889586c6dbf6e3a11 100644 (file)
--- a/contrib/emacs/git-blame.el
+++ b/contrib/emacs/git-blame.el
@@ -79,6 +79,7 @@
 ;;; Code:
 
 (eval-when-compile (require 'cl))                            ; to use `push', `pop'
+(require 'format-spec)
 
 (defface git-blame-prefix-face
   '((((background dark)) (:foreground "gray"