Bad performance of simple regular expression - why??

[Joel C. Salomon]

Tomas Lindquist Olsen wrote:
> I stumbled across this link last night. It says something slightly different...
> 
> http://swtch.com/~rsc/regexp/regexp1.html

The regexp library isn’t the only really useful bit of software packed 
into Plan 9.  I’m implementing a compiler for the first time (C-ish, not 
D) under Plan 9, and it’s a constant temptation to add “just one more 
feature” because there’s a library to support it.

--Joel