Re: [BUG] "\fC" macro in ox-man.el [9.6.15 (release_9.6.15 @ /usr/share/emacs/29.2/lisp/org/)]

[onf]

On Sun Jan 19, 2025 at 8:43 AM CET, Ihor Radchenko wrote:
> "G. Branden Robinson" <g.branden.robinson@gmail.com> writes:
> >> What about \fC\f[CR]Lorem\fP\fP?
> >
> > Unreliable.  As onf pointed out, not only is the font selection not
> > backed up by a stack, but it the identity of "the previous font" is not
> > well-defined if you attempt to select a non-existent font (as either or
> > both of `C` and `CR` may be).
>
> I am wondering if the situations like the above should be caught by
> groff linter. Currently, they seem not.

They actually are:
  $ groff -Tutf8 -ww << EOF
  .pl 1
  One two \fCthree\fP four.
  EOF
  troff:<standard input>:2: warning: cannot select font 'C'
  One two three four.

~ onf