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[Bug runtime/15063] New: regular expressions: correct subtleties with ^ and $ anchoring


http://sourceware.org/bugzilla/show_bug.cgi?id=15063

             Bug #: 15063
           Summary: regular expressions: correct subtleties with ^ and $
                    anchoring
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap@sourceware.org
        ReportedBy: smakarov@redhat.com
    Classification: Unclassified


Follow-on from PR11334: make sure that the anchoring operations ^ and $ behave
'correctly' in odd edge cases such as "$^", "$.*" etc. -- this requires
double-checking against, say, glibc to figure out what the correct behaviour
should be.

There are some oddities specified in the glibc-derived testsuite, e.g. it says
that ^* should fail to compile but (^)* is okay -- it's not clear why they
wanted it to behave like that.

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