Your message dated Wed, 12 May 2021 22:15:04 +0200 with message-id and subject line (scheme base) "member" should return #f if object is not in list has caused the debbugs.gnu.org bug report #43304, regarding (scheme base) "member" should return #f if object is not in list to be marked as done. (If you believe you have received this mail in error, please contact help-debbugs@gnu.org.) -- 43304: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=43304 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems