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Re^4: grep trouble (body of flip-flop range)by LanX (Saint) |
on Apr 17, 2011 at 16:21 UTC ( [id://899823]=note: print w/replies, xml ) | Need Help?? |
Thanks! IMHO sounds like far less than 1‰ of all CPAN modules might rely on this.
UPDATE: OK found another use-case, I just recently had the need in my ORG-Parser to distinguish the range delimiters and the range "body" with a flip-flop-operator, like for ORG's "BEGIN/END"-blocks. This can be simplified (i.e. more DRY), if one has access to the last successful pattern:
I think that's a more frequent application, I even slightly remember seeing it in Friedl's book. But I'd rather prefer an explicit special varą, something like $PATTERN or $&& (in analogy to $MATCH resp. $&) .
Cheers Rolf 1) an special var has the advantage that the regex itself can be accessed, e.g. printed.
updatefor limitations see update in Re^2: Extract table from a block of text (updated)
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