utils: accept mistypings and common separators between line and column

It is easy to type beside the comma key and hit instead "m" or ".", so
accept also these as a separator between line and column number.  And
when being generous anyway, also accept space, slash and semicolon.

This fulfills https://savannah.gnu.org/bugs/?48305.

Signed-off-by: Rishabh Dave <rishabhddave@gmail.com>
1 file changed