[clug] Help with a python regexp?

Brendan Jurd direvus at gmail.com
Fri Feb 20 15:41:20 GMT 2009


On Fri, Feb 20, 2009 at 9:08 PM, Brad Hards <bradh at frogmouth.net> wrote:
> So how to I match a line containing "warning:", as long as it doesn't start
> with "exchange.idl"?
>

Sounds like you are in need of a negative look-behind assertion.  One
way to express this (in Python and some other Perl-compatible regex
dialects) would be:

    ^(?<!exchange.idl).*warning

Cheers,
BJ


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