[CMake] Regex changes between cmake 2.0.6 and 2.4.2 ??

[Kris Dekeyser]

Hi,
 
I was running my build macros in the latest CMake (2.4.2) and encountered very strange errors. With some debug printing I discovered that the new CMake version behaves differently regarding RegEx testing compared to the version 2.0.6 that we currently use.
 
This is a summary of what we do:
 
SET(RegexAbsoluteDir "^([a-zA-Z][:])?[/\\\\]")

#--- Make directories absolute
SET(DirList)
PRINT_MESSAGE(9 "WordList ${WordList}")
FOREACH(word ${WordList})
  PRINT_MESSAGE(9 "word ${word}")
  IF(${word} MATCHES ${RegexAbsoluteDir})
    PRINT_MESSAGE(9 "word ${word} matches ${RegexAbsoluteDir}")
    SET(DirList ${DirList} ${word})
  ELSE(${word} MATCHES ${RegexAbsoluteDir})
    PRINT_MESSAGE(9 "word ${word} does not match ${RegexAbsoluteDir}")
    SET(DirList ${DirList} "${${ProjectName}_SOURCE_DIR}/${word}")
  ENDIF(${word} MATCHES ${RegexAbsoluteDir})
  PRINT_MESSAGE(9 "DirList ${DirList}")
ENDFOREACH(word)

With Cmake 2.4.2 I got this output:

-- WordList D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include
-- word D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include
-- word D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include does not match ^([a-zA-Z][:])?[/\]
-- DirList D:/Workspace/EDA/1.1/Packages/EDA_Interface/D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include

With Cmake 2.0.6 I got:

-- WordList D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include
-- word D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include
-- word D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include matches ^([a-zA-Z][:])?[/\]
-- DirList D:/Workspace/EDA/1.1/Packages/EDA_Interface/export/include

So, is this:
a) a bug ?
b) a fixed bug ?

If b), how should I modify my RegEx expression to get the desired result?

I have to work with the Cmake book for version 1.8 for now.
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