bug#5211: Color escape codes in the output of vc-git-print-log

[Dan Nicolaescu <dann@ics.uci.edu>]

Juanma Barranquero <lekktu@gmail.com> writes:

  > Package: emacs,vc
  > Tags: patch
  > Version: 23.1.90
  > Severity: minor
  > 
  > 
  > Depending of your setting of color.diff, color is used for log output,
  > and vc-print-log shows garbage (OK, escape codes for color):
  > 
  > ^[[33mcommit 43a3bf88e5e495ad048b3a6d3cf852e1e7a02f1c^[[m
  > Author: xxx <yyy@zzz>
  > Date:   2009-12-14 17:11:35 +0200
  > 
  >     blah blah blah
  > 
  > 
  > As color in *vc-change-log* buffers is an issue for font-locking, and
  > not for git log, the command should be called with --no-color.
  > 
  > OK to the following patch?
  > 
  >     Juanma
  > 
  > 
  > 2009-12-14  Juanma Barranquero  <lekktu@gmail.com>
  > 
  > 	* vc-git.el (vc-git-print-log): Pass --no-color to `git log'.

When did the --no-color option appear?
If we pass it by default, then it will break C-x v l for git versions
that do not support it.
If --no-color is old enough, the it might not matter...