[GHC] #2540: [Text.Regex] incorrect word boundary ("\\b") substitutions. Bug in regex-compat's subRegex handling of BOL flags.

[GHC]

#2540: [Text.Regex] incorrect word boundary ("\\b") substitutions. Bug in regex-
compat's subRegex handling of BOL flags.
--------------------------------+-------------------------------------------
 Reporter:  Eelis-              |          Owner:  ChrisKuklewicz
     Type:  bug                 |         Status:  closed        
 Priority:  normal              |      Milestone:  Not GHC       
Component:  libraries (other)   |        Version:  6.8.3         
 Severity:  normal              |     Resolution:  fixed         
 Keywords:  regex regex-compat  |     Difficulty:  Unknown       
 Testcase:                      |   Architecture:  Multiple      
       Os:  Multiple            |  
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Changes (by ChrisKuklewicz):

  * status:  assigned => closed
  * resolution:  => fixed

Comment:

 I have uploaded regex-compat 0.92 and regex-posix 0.93.2 to hackage (they
 are also in darcs).  These contain two changes:

 regex-posix's Wrap.hsc defines _POSIX_C_SOURCE to (untested) cause the gnu
 systems to stop trying to handle non-posix escapes like \b.

 regex-compat's splitRegex and subRegex are changed to use matchAllText and
 not to use recursion.  This may (untested) create differences in behavior
 compared to the old version, including laziness.

 Both require the newer regex-base to compile and run, the current version
 of which is 0.93.1 at this time.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2540#comment:4>
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