[haskeline] #126: Vi mode should not treat Esc b as Meta-b

[haskeline]

#126: Vi mode should not treat Esc b as Meta-b
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Reporter:  akio    |       Owner:     
    Type:  defect  |      Status:  new
Priority:  major   |   Milestone:     
 Version:  0.6     |    Keywords:     
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 When I use a Haskeline application under GNU screen on Linux, the vi mode
 doesn't work well. Specifically, when I press Esc and then 'b' in insert
 mode, the application does not respond to it, if I hit these keys fast
 enough. The expected behavior is to go into the normal mode, then move the
 cursor back by one word. As far as I know, GNU readline, zsh and vim all
 behave this way.

 It seems that the key sequence is being interpreted as a Meta-b. I think
 this behavor is inconvenient in the vi mode.

 It looks like in {{{System.Console.Haskeline.Vi}}}, we could define key
 bindings for all meta keys so that the line editor behaves as if Esc was
 pressed when it sees a meta key. If this is an acceptable solution, I'm
 happy to provide a patch.

-- 
Ticket URL: <http://trac.haskell.org/haskeline/ticket/126>
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