[name]
Lists not parsed as numbers

[input]
=over 4

=item 1. Not a number

=item 2. Spaced right

=back

=over 2

=item 1 Not a number

=item 2 Spaced right

=back

[output]
.IP "1. Not a number" 4
.IX Item "1. Not a number"
.PD 0
.IP "2. Spaced right" 4
.IX Item "2. Spaced right"
.IP "1 Not a number" 2
.IX Item "1 Not a number"
.IP "2 Spaced right" 2
.IX Item "2 Spaced right"