Follow-up Comment #5, bug #64728 (project groff):
[comment #4 comment #4:]
> If you consider the width of a diversion is the horizontal
> displacement of the longest line in the diversion, then the
> horizontal displacement in this single line example is zero,
True, and implementations do seem to treat it this way. But the documentation
(both CSTR #54 section 7.4 and groff's current Texinfo manual) does not
directly address this situation. Both documents refer only to "horizontal
size," which could be either the maximum amount of ink spilled horizontally
(Anonymous's presumption), or the maximum width the cursor traveled.
Also of note, and not entirely intuitive, is that if the cursor ends up to the
left of where it started, the width is still reported as 0 (in both groff and
Heirloom).
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