Re: regex square brackets exceptions


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Re: regex square brackets exceptions

by moritz (Cardinal)

on Jun 21, 2011 at 13:59 UTC ( [id://910744]=note: print w/replies, xml )

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in reply to regex square brackets exceptions

There's an easy way to check: try it out. There's another one that I like:

$ perl -Mre=debug -ce '/[a-z-[bc]]/'
Compiling REx "[a-z-[bc]]"
Final program:
   1: ANYOF[\-[a-z][] (12)
  12: EXACT <]> (14)
  14: END (0)
anchored "]" at 1 (checking anchored) stclass ANYOF[\-[a-z][] minlen 2
-e syntax OK
Freeing REx: "[a-z-[bc]]"
[download]

It tells you that the final closing square bracket is interpreted as a literal (EXACT) match, so it surely didn't parse the regex class the same way as Java does.

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