Out on a limb: another posibility is that this isn't really perl (but you're asking here anyway because of the proliferation of things promising "Perl Compatible Regexes" which really aren't) and you're using something with a regex variant where \< and \> are actually more specific versions of what would be \b in perl (specifying beginning and end of word respectively).

In reply to Re: case insensitive matching by Fletch
in thread case insensitive matching by Anonymous Monk

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