Author: ph10 Date: To: ND CC: Pcre-dev Subject: Re: [pcre-dev] Detecting starting code units
On Sat, 13 Jul 2019, ND via Pcre-dev wrote:
> PCRE try to detect starting code units in attempt to apply a start
> optimization.
> As we can see from next two examples, it detects starting code units for
> "[^ab]", but don't doing this for "[^a]". I think it looks a bit curiously.
> May be "[^a]" can use the same algorithm as "[^ab]"?
[^a] is optimized into a different (faster) opcode; I will see if this
can easily produce the same starting code units as [^ab] for tidyness. I
do not expect it will do much for performance.
