Tags: patch Reading through time_cmp, I didn't understand why the lisp_time struct was calculated for the first argument before checking if both are eq. From what I see lisp_time struct is not a destructive function, so it should be possible to call the function when calculating the lisp_time struct for the second argument. In GNU Emacs 29.0.50 (build 4, x86_64-pc-linux-gnu, GTK+ Version 3.24.30, cairo version 1.16.0) of 2022-04-10 built on viero Repository revision: 0023cfdc4e6d348519198cf75553d1afad0ed153 Repository branch: master Windowing system distributor 'The X.Org Foundation', version 11.0.12011000 System Description: Guix System Configured using: 'configure PKG_CONFIG_PATH=/home/philip/.guix-profile/lib/pkgconfig:/home/philip/.guix-profile/share/pkgconfig'