[GHC] #15452: [GHCi] Add an option to make tab completion case-insensitive

[GHC]

#15452: [GHCi] Add an option to make tab completion case-insensitive
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        Reporter:  f-a               |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  low               |            Milestone:  8.6.1
       Component:  GHCi              |              Version:  8.4.3
      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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Comment (by f-a):

 I have sent a patch to the maintainer of `haskeline` which would allow
 this (ci-autocomplete) to be implemented in ghci, but I still have to hear
 from him.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15452#comment:1>
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