Neigher \K nor /r existed in Perl 5.6.x, which is the latest version of the regexp syntax that YAPE::Regex::Explain supports. (This is documented, and would have been pretty easy to test.)

Yes, my bad.

I made up for it by providing a proper, detailed answer below... :)

In reply to Re^3: strange usage of s/// by smls
in thread strange usage of s/// [solved: Perl 5.14 and 5.16 bug] by brx

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