Pablo Contreras wrote:

> Hi All,
> You may think I'm crazy, why would you want to call HIGHLIGHT so many times=
> ??? Because I wrote a color scheme script that updates the highlight contin=
> uously. Each 'time' it calls HIGHLIGHT 40 times to update each major syntax=
>  element's name, and if as I did you increase the frequency did once per se=
> cond, this script ends up calling HIGHLIGHT 40 x 60 x 60 times in one hour =
> =3D 144000.  Works perfectly, but... at around the hour, or around the 1440=
> 00th call to HIGHLIGHT, HIGHLIGHT starts making the foreground color invisi=
> ble.  You can not read the text on the screen any more.  If you do a ":" fo=
> r command, the foreground colors appear but as soon as normal execution res=
> umes and my script does more HIGHLIGHTs the ink becomes invisible again.
> As a work around, I have to re-start Vim every hour or so.

You don't mention the highlight command you use.  You could try re-using
highlight groups, instead of defining new ones all the times.  Because
old groups are never deleted.

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