[PATCH resend] run-tests: make sure to check if pygments is installed before using it

[Jun Wu]

Excerpts from Martin von Zweigbergk's message of 2017-07-17 15:17:40 -0700:
> On Mon, Jul 17, 2017 at 1:07 PM, Augie Fackler <raf at durin42.com> wrote:
> > On Mon, Jul 17, 2017 at 12:24:26PM -0700, Jun Wu wrote:
> >> LGTM.
> >
> > Queued, thanks.
> >
> >>
> >> Excerpts from Pulkit Goyal's message of 2017-07-18 00:07:32 +0530:
> >> > # HG changeset patch
> >> > # User Pulkit Goyal <7895pulkit at gmail.com>
> >> > # Date 1500065225 -19800
> >> > #      Sat Jul 15 02:17:05 2017 +0530
> >> > # Node ID 37df34ca705cf68eef4fa6b4087eb039f775d4e6
> >> > # Parent  0353c051d54702a960e4efba1eea6fbc13ad401a
> >> > run-tests: make sure to check if pygments is installed before using it
> 
> This means that "run-tests.py --color=always" still gives no color. Do
> the tests still fail if we take only the tests/test-run-tests.t part
> of the patch?

Good catch. I think --color=always prints warning or errors out is desirable
when pygements is not available. So taking only the .t part makes sense to
me.