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

[GHC]

#11971: Unify error messages that suggest enabling extensions
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        Reporter:  cocreature        |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Description changed by cocreature:

@@ -3,2 +3,2 @@
- Here are just a few examples (I’ll do a longer search if we come to a
- consensus)
+ Here are just a few examples (I’ll do a longer search if there is a
+ consensus to move forward with this ticket)

New description:

 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 there is a
 consensus to move forward with this ticket)

 - 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.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11971#comment:1>
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