empty line by troff(1) and is ignored. Teach makewhatis(1)
about this. This makes the following difference:
-groff_man(7), . groff_man(7) - groff `man' macros to support generation of man pages
+groff_man(7) - groff `man' macros to support generation of man pages
-groff_mdoc(7), -(7) - . groff_mdoc reference for groff's mdoc implementation
+groff_mdoc(7), -(7) - groff_mdoc reference for groff's mdoc implementation
-troff(1), . . troff(1) - format documents
+troff(1) - format documents
Noticed by: yar