This might come across as slightly smart-assed, but if you wrote your script in Perl, you wouldn't have the platform problem, nor the word-boundary problem. True you would have a Perl problem, but that would still be several orders of magnitude easier than trying to have Linux, Cygwin and Posix come to agreement!! :)
--hsm On Tue, Nov 24, 2009 at 2:40 PM, aputerguy <nab...@kosowsky.org> wrote: > > Dave Korn writes: > >> Bash man page for '~=' refers to man regex(3) which refers to man regex(7) >> which describes word boundary markers as below: >> >> $ [[ "foo" =~ [[:\<:]]foo[[:\>:]] ]]; echo $? >> 0 >> >> $ [[ "foobar" =~ [[:\<:]]foo[[:\>:]] ]]; echo $? >> 1 > > Thanks David! > I had actually greppe'd both regex(3) and regex(7) before but I was looking > for the word "word" or "boundary" - neither of which are used in this > context. > > HOWEVER, this solution while sweet for cygwin-bash, has the CONVERSE > PROBLEM. > Apparently, the special strings [[:<:]] and [[:>:]] are not recognized under > Linux regex(7) - they give return code 2. > > So, now I have the frustrating situation where \\b works in Linux but not in > Cygwin while [[:<:]] works in Cygwin but not in Linux. > > BTW, both regex(7) pages even imply they are POSIX. > Linux: "regex POSIX.2 regular expressions" > Cygwin: "regex - POSIX 1003.2 regular expressions" > > Such incompatibility is a PITA because then in a mixed Windows/Linux > environment one has to remember to clutter scripts with ugly "if [ "$OSTYPE" > = "cygwin" ] exceptions, etc. > > > > -- > View this message in context: > http://old.nabble.com/Cygwin-bash-regexp-matching-doesn%27t-treat-%22%5Cb%22-properly-tp26500158p26503748.html > Sent from the Cygwin list mailing list archive at Nabble.com. > > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple