[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:  new
  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:              |
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Comment (by simonpj):

 I'm sorry, I'm quite confused.  GHC already has a `-fwarn-tabs` flag,
 doesn't it?  There are two patches offered above, but I'm not clear what
 the purpose of either is. Maybe I have not ready through this ticket
 carefully enough.

 Would someone just like to write down what the issue is, what the
 alternatives are, their pros and cons, and which of the alternatives they
 recommend following.

 I have no opinion myself; I'd just like see this resolved.

 Simon

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9230#comment:16>
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