I don't understand why
{\bf Title}\hfil A.\ Uthor
\bye
and
{\bf Title}\hfill A.\ Uthor
\bye
do not give the same result. Only \hfill works to right align text but there is not other infinity, I would expect both to do.
I don't understand why
{\bf Title}\hfil A.\ Uthor
\bye
and
{\bf Title}\hfill A.\ Uthor
\bye
do not give the same result. Only \hfill works to right align text but there is not other infinity, I would expect both to do.
\parfillskipglue in either case, but its default value is0pt plus 1fil, so\hfiladds to it, whereas\hfillkills it. Shall we close as duplicate? – egreg Mar 11 '22 at 13:57