Comment 8 for bug 1666314

Ah, OK, problem is that without the code I can't set a value of e.g. "10.5" as my system expects a comma as decimal separator (i.e. "10,5").

@Jabier: Couldn't we implement the current GtkSpinButton as "Inkscape::UI::Widget::SpinButton()"? It would take care of all these issues (and even adding functionality like allowing to enter simple arithmetic expressions).