[GHC] #9230: Make -fwarn-tabs the default

[GHC]

#9230: Make -fwarn-tabs the default
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              Reporter:  dfeuer      |            Owner:  mlen
                  Type:  feature     |           Status:  patch
  request                            |        Milestone:  7.10.1
              Priority:  normal      |          Version:  7.8.2
             Component:  Compiler    |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Easy (less than 1
  Unknown/Multiple                   |  hour)
       Type of failure:              |       Blocked By:
  None/Unknown                       |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:  Phab:D255   |
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Comment (by Austin Seipp <austin@…>):

 In [changeset:"972ba1210d1bb535c41526ce396c0f086d30b59a/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="972ba1210d1bb535c41526ce396c0f086d30b59a"
 Enabled warn on tabs by default (fixes #9230)

 Summary:
 This revision enables -fwarn-tabs by default and add a suppression
 flag, so that GHC compilation won't fail when some files contain tab
 characters.

 Test Plan: Additional test case, T9230, was added to cover that change.

 Reviewers: austin

 Reviewed By: austin

 Subscribers: simonmar, ezyang, carter, thomie, mlen

 Differential Revision: https://phabricator.haskell.org/D255

 GHC Trac Issues: #9230

 Conflicts:
         testsuite/driver/testlib.py
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9230#comment:23>
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