Re: Speedup of display of long and truncated lines

[Dmitry Gutov]

On 20.08.2022 19:22, Gregory Heytings wrote:
> > > #!/bin/bash
> > > for i in $(seq 1 $1)
> > > do
> > >    echo -n "INSERT INTO TABLE_$i VALUES "
> > >    for j in $(seq 1 $2)
> > >    do
> > >      echo -n "(10,'100','QWERTY','Foo Bar Baz',50,4852,$j)"
> > >      (($j == $2)) && echo -n ';' || echo -n ','
> > >    done
> > >    echo
> > > done
> >
> > Which major mode is used for visiting such files?
>
> sql-mode

FWIW, my brief testing seems to show sql-mode's font-lock has similar 
performance to js-json-mode. Maybe like 1.5x slower in syntax-ppss (due 
to syntax-propertize-function being present), but that's it.

Tested with font-lock without narrowing, of course.