See also https://stackoverflow.com/q/61423177/841108
I want to git add the [HelpCovid.geany](https://github.com/bstarynk/helpcovid/blob/master/HelpCovid.geany) project file for the GPLv3+ project [helpcovid](https://github.com/bstarynk/helpcovid).
When I manually replace absolute paths there (which are unfriendly to `git`) with relative paths, I am getting lots of messages like
(geany:1819382): Geany-CRITICAL **: 10:43:52.803: utils_tidy_path: assertion 'g_path_is_absolute(filename)' failed
(geany:1819382): Geany-CRITICAL **: 10:43:52.880: utils_tidy_path: assertion 'g_path_is_absolute(filename)' failed