[commit: ghc] master: Make diagnostics slightly more colorful (f1fc8cb)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/f1fc8cbf511c88cb88bf9f46724ee2711f54891a/ghc

>---------------------------------------------------------------

commit f1fc8cbf511c88cb88bf9f46724ee2711f54891a
Author: Phil Ruffwind <rf at rufflewind.com>
Date:   Tue Nov 29 13:31:01 2016 -0500

    Make diagnostics slightly more colorful
    
    This is a preliminary commit to add colors to diagnostics (warning and
    error messages).  The aesthetic changes are:
    
      - 'warning', 'error', and 'fatal' are all colored magenta, red, and
        red respectively.
      - The warning annotation [-Wsomething] shares the same color.
      - Warnings and errors are also bolded (this is consistent with what
        other compilers do).
    
    A new flag has been added to control the behavior:
    
        -fdiagnostics-color=(always|auto|never)
    
    This flag is 'auto' by default.  However, auto-detection is not
    implemented yet, so it effectively it defaults to off.
    
    Test Plan: validate
    
    Reviewers: austin, bgamari
    
    Reviewed By: bgamari
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D2716
    
    GHC Trac Issues: #8809


>---------------------------------------------------------------

f1fc8cbf511c88cb88bf9f46724ee2711f54891a
 compiler/main/DynFlags.hs                  | 27 +++++++++++-
 compiler/main/DynFlags.hs-boot             |  6 ++-
 compiler/main/ErrUtils.hs                  | 22 ++++++----
 compiler/utils/Outputable.hs               | 66 +++++++++++++++++++++++-------
 docs/users_guide/using.rst                 |  9 ++++
 utils/mkUserGuidePart/Options/Verbosity.hs |  4 ++
 6 files changed, 111 insertions(+), 23 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc f1fc8cbf511c88cb88bf9f46724ee2711f54891a