On Sat, May 27, 2023 at 01:59:40PM +0200, Helge Kreutzmann wrote: >[...] > .BI \-f " program-file\fR,\fP "\c > .BI \-\^\-file " program-file" This is a wrong use of '\c', as its purpose is to join the output of two macros _without_ an intervening space character.
So remove ' ' and '\c', changing .BI \-f " program-file\fR,\fP "\c to .BI \-f " program-file\fR,\fP"

