[GHC] #7158: GHCi commands case insensitive

[GHC]

#7158: GHCi commands case insensitive
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 Reporter:  Oblosys           |          Owner:                  
     Type:  feature request   |         Status:  new             
 Priority:  normal            |      Component:  Compiler        
  Version:  7.6.1-rc1         |       Keywords:                  
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown      |       Testcase:                  
Blockedby:                    |       Blocking:                  
  Related:                    |  
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 Because GHCi commands start with a colon, it frequently happens to me that
 my shift key is still down and I accidentally type :R instead of :r, which
 gives an error. I'm not sure how common this is, but I've seen at least
 one more person do it.

 As it seems unlikely that people define commands that differ only by case,
 it might be an option to disregard the case altogether when parsing the
 commands.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7158>
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