[GHC] #3084: alow macros to redefine builtin GHCi commands

[GHC]

#3084: alow macros to redefine builtin GHCi commands
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Reporter:  phercek           |          Owner:                  
    Type:  feature request   |         Status:  new             
Priority:  normal            |      Component:  GHCi            
 Version:  6.10.1            |       Severity:  normal          
Keywords:                    |       Testcase:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
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 I would like to be able to redefine the builtin GHCi commands. The idea is
 that when searching for a command the user defined macros would be
 searched first and only then the built-in commands would be searched. If
 user wants to invoke a built-in command regardless of user defined
 commands he/she would need to start it with two colons (instead of one).

 It is an user interface change which may break some scripts, but it would
 allow to provide different default behavior.[[BR]]
 For example:
  * when I use my GHCi extensions I want all my ":continue" commands to be
 actually something like ":x :continue"
  * it would allow to specify different order of searching for abbreviated
 commands as the default one
  * it would allow to specify different default switches for builtin
 commands (when they have any)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3084>
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