[Therion] cavern exit code 256

[Olly Betts]

On Sun, Apr 02, 2017 at 11:49:54PM +0200, Benedikt Hallinger via Therion wrote:
> The source giving causing it is:
> >fix 1.0 xxxxx yyyyy zzzzz 0 0 0
> 
> If i remove the standard-deviation zeros, cavern stops to complain.
> 
> The reason was that the entrance location was measured by public service
> against official grid by theodolite and as such is "perfectly correct".
> How can i give this information? Am i forced to use some minimal positive
> fraction? (eg. "0.00001"?)

Just omit the SDs - that means it's an exact fix.

> If yes, could this be an cavern bug?

It's really a bug in the .svx file therion generates - it should omit
the zero SDs even if they're explicitly specified in the .th file, since
the documented syntax for an exact *FIX command is that you omit the SDs.

Cheers,
    Olly