[haskeline] #111: Incorect calculations for multi-line prompt

[haskeline]

#111: Incorect calculations for multi-line prompt
-------------------+--------------------------------------------------------
Reporter:  guest   |       Owner:                      
    Type:  defect  |      Status:  new                 
Priority:  minor   |   Milestone:                      
 Version:  0.6     |    Keywords:  lordrat at e-region.net
-------------------+--------------------------------------------------------
 For multi-line prompt (containing new-line characters for example)
 haskeline behaves like the last line has length of whole prompt.

 Example:
 {{{
 prompt = "Some text.\nPrompt> "
 }}}

 This causes problems when editing really long line (longer than width of
 window).

-- 
Ticket URL: <http://trac.haskell.org/haskeline/ticket/111>
haskeline <http://example.org/>
My example project