The numeric input issue is intentional: We intentionally set $LC_NUMERIC to "C" to avoid having inconsistent number formats all over the place, both for input and for output. It annoys me to no end that tools like desktop calculators (KCalc, Gnome Calculator etc.) as well as spreadsheets all insist on their own crazy ideas when I am allowed to use a "." as the decimal separator and when I am forced to use a ",".