On 4 June 2013, Bram Moolenaar <[email protected]> wrote:
>
> lcd wrote:
>
> > On 4 June 2013, Bram Moolenaar <[email protected]> wrote:
> > >
> > > I wrote:
> > >
> > > > Patch 7.3.1110
> > > > Problem: New regexp matching: Using \@= and the like can be slow.
> > > > Solution: Decide whether to first try matching the zero-wdith part or
> > > > what
> > > > follows, whatever is more likely to fail.
> > > > Files: src/regexp_nfa.c
> > >
> > > This should make syntax highlighting a lot faster. E.g. for Vim help
> > > files.
> > >
> > > If you previously set 'regexpengine' to 1, give it a try without that.
> >
> > For what it's worth: moving cursor with cursorcolumn and cursorline
> > set is still substantially slower with regexpengine set to 0.
>
> With what syntax? With syntax off there should be no difference.
It's really slow with vim, tex, and markdown syntax, somewhat slow
with sh and mail, and fast (but still slower than regexpengine == 0)
with c and perl. The speed is indeed the same with syntax off, at least
as far as I can tell.
That said, these are only my perception, I have no idea how to get
precise measurements for this.
/lcd
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