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Regex code assertion should be able to fail

by nobull (Friar)
on Aug 31, 2007 at 06:08 UTC ( [id://636266]=perlmeditation: print w/replies, xml ) Need Help??

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  1. or download this
    /(?(?{! whatever() })(?!))/
  2. or download this
    /(?(?{ whatever() })|(?!))/
  3. or download this
    /(?(?{ whatever() })|(*FAIL))/
  4. or download this
    /(?{ whatever() })/
  5. or download this
    /(?{ whatever() }?)/

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