[regex-coach] Feature request: Regexp performance indicator/steps used

[Morten Hattesen]

I really appreciate what Regex Coach has done for honing my Regular 
Expressions skills, and assisting debugging of complex expressions.
 I frequently wish to optimize regular expressions (mainly by reducing 
possible backtracking http://www.regular-expressions.info/atomic.html), but 
lack a way to test the relative performance between different regular 
expressions.
 To measure performance of a given regexp, I would really like the 
possibility of having Regex Coach count the total number of steps used by 
the underlying regexp engine for a given regexp search, or some other 
meaningful performance indicator. 
This could possibly be displayed when pressing the ">>" (show next match) 
button (regardless of whether a match was found or not). This way, you can 
quickly try out different matching approaches, and get an indication of the 
relative performance. 
 Rgds,
 Morten Hattesen
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