Eli Zaretskii writes: > Thanks. Did you run the test suite after applying the changes, and > did you see no regressions? If you didn't yet run the test suite, > please be sure to run all of it, as the use of expand-file-name is > universal. I hadn't, so I checked out master aa59d38c59 and applied my patch on top of it. I then ran "make check" and waited for a bit. There appears to be only two tests failing in test/lisp/time-stamp-tests.el ('time-stamp-format-day-of-week' and 'time-stamp-format-string-width'). Both seem to be unrelated to my change; maybe it's my system's strange combination of Spanish/English/German locale-related configurations (I'm attaching the log just in case). All other test files were run without problems.