That is neat. And very good to know. Thanks.

The need for backrefs in a look-behind doesn't crop up that often, but when it does, I've found it almost impossible to work around--till now.

That one definitely goes into my bag of "tricks techniques worth knowing"!

Examine what is said, not who speaks.
"But you should never overestimate the ingenuity of the sceptics to come up with a counter-argument." -Myles Allen
"Think for yourself!" - Abigail        "Time is a poor substitute for thought"--theorbtwo         "Efficiency is intelligent laziness." -David Dunham
"Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon

In reply to Re: Lookbehind and backreferences by BrowserUk
in thread Perl regular expression for amino acid sequence by seaver

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