[GRASS5] pre2 nviz & darwin -- part ii

[Glynn Clements]

Bob Covill wrote:

> > > >> however, if i try nviz from tcltkgrass, the command passed is "nviz
> > > >> el=elevation.dem", which gives "Sorry, <el=> is ambiguous".
> > > >
> > > > Odd; that works fine here, both from the command line and via
> > > > tcltkgrass.
> > > >
> > > > What does "nviz help" say?
> > > >
> > >
> > > GRASS 5.0.0pre2 > nviz help
> > 
> > [snip]
> > 
> > That implies that the error message is bogus, i.e. a problem with
> > G_parser(), but I can't see anything obvious.
> 
> I am guessing here, but is it possible that TCL (tcltkgrass) is getting
> confused with the command? In other words is it reporting the error
> before it even gets to G_parser?

Unlikely; the error message matches the one in src/libes/gis/parser.c:

	if (got_one > 1)
	{
		fprintf(stderr,"Sorry, <%s=> is ambiguous\n", the_key) ;
		return(1) ;
	}

This error message should only occur if one of the argument names (the
LHS of an "arg=val" argument) is a prefix of multiple declared
options, but isn't an exact match for any of them.

-- 
Glynn Clements <glynn.clements at virgin.net>