Re: [GHC] #1375: ByteString’s “lines” eats empty lines

[GHC]

#1375: ByteString’s “lines” eats empty lines
-------------------------------+--------------------------------------------
    Reporter:  guest           |        Owner:         
        Type:  bug             |       Status:  new    
    Priority:  high            |    Milestone:  6.8    
   Component:  libraries/base  |      Version:  6.6.1  
    Severity:  normal          |   Resolution:         
    Keywords:                  |   Difficulty:  Unknown
          Os:  Unknown         |     Testcase:         
Architecture:  Unknown         |  
-------------------------------+--------------------------------------------
Changes (by igloo):

  * milestone:  => 6.8
  * priority:  normal => high
  * cc:  => dons at cse.unsw.edu.au

Comment:

 In particular, it's Lazy.Char8 that has the problem. Here's the
 (libraries/base) HEAD:
 {{{
 Prelude> lines "a\n\nb\n\nc"
 ["a","","b","","c"]
 Prelude> :m - Prelude
 > :m + Data.ByteString.Char8
 Data.ByteString.Char8> Prelude.map unpack (lines (pack "a\n\nb\n\nc"))
 ["a","","b","","c"]
 Data.ByteString.Char8> :m - Data.ByteString.Char8
 > :m + Data.ByteString.Lazy.Char8
 Data.ByteString.Lazy.Char8> Prelude.map unpack (lines (pack
 "a\n\nb\n\nc"))
 ["a","b","c"]
 }}}
 I haven't looked at the development branch of fps/bytestring.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1375>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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