This has nothing at all to do with making it easier to customize the
look of man pages.
Hyperlinks are still marked up using OSC 8, hoping that whatever
terminal sits in front of the user interprets or ignores those.
Terminfo naturally doesn’t have a capability for hyperlinks.
Autoconf is not inf
> Rare? Maybe. But not so rare that a macro package need not
> be prepared for it.
I think leaders are meant to be used in conjunction with
diversions. When they are used in already formatted text,
all required dimensions are known, allowing n/troff to
compute the number of leader character re