2016-01-08 2:12 GMT+03:00 Gregory Pakosz <[email protected]>:
> I have lazyredraw enabled and regexpengine set to 0.
>
> In my case, it's foldmethod=syntax being responsible for the lag
>
> TOTAL COUNT MATCH SLOWEST AVERAGE NAME PATTERN
> 4.496335 17040 104 0.021650 0.000264 rubyConditionalExpression
> \%(\%(^\|\.\.\.\=\|[{:,;([<>~\*%&^|+=-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@<![?!]\)\s*\)\@<=\%(\\\n\s*\)\@<!
>
> Forcing set regexpengine=1 doesn't improve the situation.
>
I see this pattern having quite a large number of look-behinds. Forcing
maximum amount of bytes here may help (search for `\@123<=` in `:h /\@<=`,
for some reason this does not have its own tag). Contacting syntax file
maintainer is needed to perform this change, I am not sure what numbers you
should exactly place there.
Most likely using \@100<! in place of \@<! (two occurences) and \@100<=
(one I see so far) should work fine.
> —
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