\fC is not actually a valid escape sequence. Using it results in misplaced underlined formatting.
--- I checked resulting muttrc.man. Using bold for terms highlighted with \fC in man page seems apropriate. doc/makedoc.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/makedoc.pl b/doc/makedoc.pl index b3a18b28..7dc178c4 100644 --- a/doc/makedoc.pl +++ b/doc/makedoc.pl @@ -755,7 +755,7 @@ sub print_docline_man($$$$) { $docstat &= ~($D_BF|$D_TT); } elsif ($special == $SP_START_TT) { - print "\\fC"; + print "\\fB"; $docstat |= $D_TT; $docstat &= ~($D_BF|$D_EM); } -- 2.27.0