documentation error introduced in commit a8f804ff?

[Dave Kemper]

Among many other changes to doc/groff.texi, commit a8f804ff 
(http://git.savannah.gnu.org/cgit/groff.git/commit/?id=a8f804ff) does this:

    * (Sentences) Make clear that inter-sentence space is applied (if not
      zero) when filling is enabled, not merely adjustment.

However, this doesn't appear to be true: a simple example shows groff applying 
inter-sentence spacing to unfilled text:

.ss 12 144  \" make sentence space huge for easy visibility
Sentence one.  Sentence two.
.br
.nf
Sentence one.  Sentence two.

Branden, is this a misstatement, or do you think .ss *should* behave 
differently in fill mode vs no-fill mode?  There's no historical (pre-groff) 
behavior in play here, since the second .ss parameter is a groff invention; 
however, as far as I'm aware, groff has always applied the additional 
inter-sentence space regardless of the fill mode setting.