[GHC] #12927: Colorized error messages result in hard-to-read .dump-* files

[GHC]

#12927: Colorized error messages result in hard-to-read .dump-* files
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8809             |  Differential Rev(s):  Phab:D2792
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"cee72d5c3c53863bd4fc9f324a93c322448e038e/ghc" cee72d5/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="cee72d5c3c53863bd4fc9f324a93c322448e038e"
 Disable colors unless printing to stderr

 Only print colors when mkLocMessageAnn is called directly from
 defaultLogAction.  This prevents ANSI error codes from cluttering up the
 dump files.

 Test Plan: validate

 Reviewers: austin, bgamari

 Reviewed By: bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2792

 GHC Trac Issues: #12927
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12927#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler