Hi Sander, On Mon, Dec 01, 2014 at 02:34:26PM +0100, Sander Klein wrote: > Hi, > > I'm testing some stuff with quite a big regex and now I am wondering > what would be more efficient. Is it more efficient to load the regex > with -i or is it better to specify it in the regex.... > > So, > > -i (some|words) > > or > > ((S|s)(O|o)(M|m)(E|e)|(W|w)(O|o)(R|r)(D|d)(S|s))
The first form is more efficient as it is natively handled by the regex engine when comparing chars, instead of building a tree of all possibilities as you have in the second form. Willy
