[GLIB] Handling float with gscanner

[Fabian Bastin <fabian bastin fundp ac be>]

I'm trying to use gscanner to read float numbers, and it works well if I
use unsigned numbers. But when I try to read a number like -17.0, it
complains. It seems that it doesn't recognize the sign '-'.

Is it normal?

Thanks for your help,

Fabian Bastin.