[self-follow-up] At 2026-04-13T00:39:42-0500, G. Branden Robinson wrote: > I can reproduce the problem with my working copy of groff, which > previews groff 1.25 and offers a little more information. > > $ nroff --version | head -n 1 > GNU nroff (groff) version 1.24.1.402-374b0-modified > $ zcat $(man -w makeindex) | nroff -man -z > troff:<standard input>:576: error: cannot open font description file 'C': No > such file or directory > troff:<standard input>:576: warning: cannot select font 'C' [-w font] > ... > troff:<standard input>:1122: warning: cannot select font 'C' [-w font] > > The second warning repeats many times, so I abbreviated the output. > (The initial error message does not appear in released versions of > groff. For inside baseball, see below.[4])
There _is_ an element of this output I didn't intend, namely the quantity of warnings about the same unselectable font. Other people noticed that too during the groff 1.24 development cycle,[1] and I thought I had it cracked. Observe what happens when we _typeset_ the same man page, instead of merely formatting it for a terminal (using "groff" instead of "nroff"). $ zcat $(man -w makeindex) | groff -man -z troff:<standard input>:576: warning: font name 'C' is deprecated [-w font] Evidently I solved the problem in one case but not the other. Not intentional. Sorry about that. Regards, Branden [1] https://lists.gnu.org/archive/html/groff/2024-10/msg00066.html
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