[GHC] #11971: Unify error messages that suggest enabling extensions

[GHC]

#11971: Unify error messages that suggest enabling extensions
-------------------------------------+-------------------------------------
           Reporter:  cocreature     |             Owner:
               Type:  feature        |            Status:  new
  request                            |
           Priority:  low            |         Milestone:
          Component:  Compiler       |           Version:  7.10.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 The error messages that suggest to enable some extension currently have a
 lot of slightly different forms:
 Here are just a few examples (I’ll do a longer search if we come to a
 consensus)

 - Did you mean to enable _?
 - Did you mean to use _?
 - Perhaps you meant to use _?
 - Perhaps you intended to use _?

 These error messages are parsed by haskell-mode (and maybe other tooling
 as well) which is quite hard since they have so many different forms.

 I propose to change all of those to “Did you mean to enable _?” since that
 I prefer enable over use here, but I don’t have any strong feelings
 towards the exact message as long as it’s consistent. So if the majority
 prefers something else I’m fine with that.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11971>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler