They are have no default, are not allowed before the first digit, are
unaffected by the presence / absence of a currency symbol, can be mixed
with regular digit separators, are incompatible with hexadecimal and
octal numbers (as are regular digit separators), and mask trailing
spaces.
Also they don't match regular spaces when set to a non-breaking space.
Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>