Ruslan Ermilov 7897159684 Fixed Nm macro so that it accepts punctuation characters as argument.
For example, neither of the following worked before:

     .Nm ,       name,
     .Nm .       name.
     .Nm :       name:
     .Dq Nm      ``name''
     .Op Nm .    [name].
2000-11-17 15:30:41 +00:00
..
2000-10-30 10:54:09 +00:00
2000-11-05 08:33:55 +00:00
2000-10-29 08:08:32 +00:00
2000-11-14 11:20:58 +00:00