When hyphenation is disabled, soft (discretionary) hyphens are
interpreted.
I discovered this when a mom user emailed me that (some) soft hyphens
were appearing as hard hyphens between syllables mid-line when run-on,
line-numbered footnotes were being output, even though hyphenation was
disabled i
I don't look at groff_tmac very often. I just noticed this entry
for the mom macro package:
mom The new mom macro package, only available in groff. As this
is not based on other packages, it can be freely designed.
So it is expected to become quite a nice, modern macro package.