António Fernandes authored Apr 06, 2024 and Peter Eisenmann committed Apr 27, 2024

This partially reverts commit c5216c47

G_DIR_SEPARATOR_S exists primarily as convenience to make GLib-based
code portable to Microsoft Windows, which is not relevant to this app.
We can still use it anyway when we want to be clear that a slash is
being used as a dir separator.

The root directory's path is "/". While that's the exact same character
as a directory separator, its meaning is completely different.