[PATCH] speedup in KMimeTypeFactory?

[Matt Rogers]

Hi,

The attached patch makes some changes to the matchFileName function in 
kmimetypefactory.cpp which gets called a lot, especially when browsing files 
in the file manager when trying to open a file. 

Depending on how you read the callgrind output, it's either a 5% (incl. 
column) speedup or a 0.5% (self column) speedup. I can't remember which is the 
more important number.

The testcase used was starting kate and browsing for a file to open and then 
letting kate completely open that file. 

Feedback wanted.
-- 
Matt
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