On 2018-07-10 04:48, ND wrote:
On 2018-07-09 09:25, ph10 wrote:
>If any branch in a negative assertion succeeds, the captures are>
(temporarily) kept, but as the whole assertion now fails, there is an>
external backtrack, which discards the captures.
>
To what point backtracking is?
I guess Perl doesn't backtrack if last alternative of negative assertion
fails.
Let's see another simple example of this when PCRE discard capture unlike
Perl:
PCRE2 version 10.31 2018-02-12
/(?!(a)b)/allcaptures
a
0:
1: <unset>
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