Tips on making regex more performant?

[bearophile]

Gary Willoughby:

> Any more tips?

Try using the LDC2 compiler, with the ctRegex, and using the 
correct compilation flags (like ldmd2 -O -release -inline 
-noboundscheck).

If that fails one solution is to write your own finite state 
machine where the state is encoded by the program counter, using 
gotos. There is a well known simple to use C library that 
generates such code automatically. But it's probably better to 
rethink your problem and re-frame it.

Bye,
bearophile