Hello, thanks for this bug report: I was confused by this recent inconvenience, too.
Just for your information, here are some related bug reports: * d#1041731: groff started to insist on proper usage of `-` vs. `\-`: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1041731 * gnupg T6674: usage of yat2m and proper marking of hyphen vs. minus: https://dev.gnupg.org/T6674 * d#1050886: proposed changes for yat2m: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050886 Cheers, Lars
