[dwm] use of class and instance (was: Re: dwm-4.9 / dmenu-3.6)

Hello Anselm,

* Anselm R. Garbe <arg_AT_suckless.org> [2008-04-03 23:10:08 +0200]:

> dmenu-3.6 is a bugfix release and dwm-4.9 contains some new
> improvements:
>
> - fine grain DEFGEOM geometry definition in config.h
> - revival of setmfact and MFACT in config.h (same applies to Mod1-h and Mod1-l)
> - certain bugfixes and polishing of the code again

Many thanks for that!!!

I saw that also Rule rules changed. And the gimp example is also
different between 4.9 and hg.

In dwm 4.9:

    { "Gimp", NULL, NULL, NULL, True },

And in dwm hg:

    { NULL, NULL, "Gimp", NULL, True },

Can you perhaps say a few words how class and instance are used, or sent
some examples from your config?

Thanks
Matthias

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