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Re: How to use \l and \u in regex mathing patterns?by AnomalousMonk (Prior) |
| on May 09, 2012 at 16:36 UTC ( #969659=note: print w/ replies, xml ) | Need Help?? |
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The \l and \u (and also \L \U) operators are interpolation control operators. For upper- and lower-case regex character sets, see [[:upper:]] and [[:lower:]] among others, e.g., the Unicode classes. See 'Escape Sequences' section in perlre, also perlrecharclass.
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