[GRASS5] r.colors bug

[Hamish]

> Radim Blazek wrote:
> 
> > GRASS 5.7 (probably also 5.3),
> > 
> > $ARCH/etc/colors/gyr:
> > 0% green
> > 50% yellow
> > 100% red
> > 
> > r.colors map=pok color=gyr
> > 
> > -> colr/pok
> > % 0 255
> > 0:0:255:0 127.5:255:255:0
> > 127.5:255:255:0 255:255:0:0
> > 0:255
> > 
> > i.e. 0 set to white.
> 
> Unless someone has changed it, the color= option uses the coded rules;
> e.g. color=gyr uses G_make_gyr_fp_colors(), which has the hardcoded
> 0=white rule.
> 
> IOW this bug/feature is in the various G_make_*_colors() functions in
> libgis.


Note that the 'r.colors rules=gyr' version has had the '0 white' removed
already. Presumably we can now remove this pre-NULL code from libgis as
well?


Hamish