[MERGE] is_ignored improvements...

[Robert Collins]

On Sat, 2006-05-20 at 09:35 -0500, John A Meinel wrote:
....
> So it would seem that the regex implementation is fairly good, even if
> it isn't perfect.

Andrew shed some light on this for me in a different conversation
recently. 'function calls are slow' in python actually means 'setting up
a python frame takes for fucking ever', and 'c method calls are really
really fast'.

So you can actually win if your inner loop of called methods is *c*
methods (like stringobject.replace) rather than python methods (like
'string.replace') simply by avoiding the python frame setup. (Searching
for methods on old style objects is also a factor).

Rob

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