activate color.ui by default (Re: What's cooking in git.git (May 2013, #05; Mon, 20))

Junio C Hamano [off-list ref] writes:

* mm/color-auto-default (2013-05-15) 2 commits
 - make color.ui default to 'auto'
 - config: refactor management of color.ui's default value

 Flip the default for color.ui to 'auto', which is what many
 tutorials recommend new users to do.

 I think this is ready for 'next', but we may want to audit tutorials
 to see if we need to adjust them if they suggest to set color.ui as
 the first thing to do when they meet Git.

The little grepping I did in our docs didn't show much about color.ui,
and nothing about its default value (just technical documentation, not
beginner-oriented).

Other than that, the patch makes the doc say "... `auto` (this is the
default since Git 2.0)". I'm slightly in favor of delaying the change
until Git 2.0 and keeping it as-is, but I'm OK with letting it in the
next minor version if other people think it should (I did not see strong
opinion on that, but I think the general opinion from the discussion was
it would be OK). If so, I can resend without the 2.0 mention (or Junio
can edit it locally).

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/