Performance testing of ignore changes?

[John Whitley]

Robert Collins <robertc <at> robertcollins.net> writes: 
> An ordered style, allowing interleaving would lead to a list of regexes,
> rather than (with exclusions) at most 2 regexes.

This is precisely what my implementation tries to avoid.  A list of regexes
results in (MxN) behavior, and users will NOT expect that there's some M
multiplier factor causing performance to slowly degrade as the ignore file grows.

-- John