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Re^5: regex to rename last _ with ,

by Grimy (Pilgrim)
on Sep 15, 2014 at 09:36 UTC ( [id://1100573]=note: print w/replies, xml ) Need Help??


in reply to Re^4: regex to rename last _ with ,
in thread regex to rename last _ with ,

Look-ahead is used much more frequently than lookbehind, hence the shorter syntax. Perl is quite heavily Huffman coded.

Look-behind is actually almost useless, since variable-length look-behind isnít supported. It can be approximated using \K

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