Please see Special Backtracking Control Verbs for (*SKIP) (*FAIL) in perlre.

Hey! You fooled me into thinking that you want htmanning to RTFM.

Discipulus++'s answer was a real insight. I had never expected that readable words are part of perl's RE syntax. I've looked into my local perl, and lo and behold, it's supported even here, in 5.18.1 (but still marked experimental).

The only thing that I don't like is that perlre does not state since which version this feature is supported.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^2: Replacing 3 and 4 digit numbers. by afoken
in thread Replacing 3 and 4 digit numbers. by htmanning

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