utf-8 safety

[2-www]

so turns out that passing invalid utf-8 to glib is unsafe: https://gitlab.gnome.org/GNOME/gtksourceview/-/issues/402

but it seems that lgi_marshal_2c doesn't do that: https://sources.debian.org/src/lua-lgi/0.9.2-4/lgi/marshal.c/?hl=956#L956

[2-www]

rn it's actually doing utf-8 conversion on filepaths (which don't have to be utf-8! you can make a file like touch $'\xff')

> Gio.File.new_for_path("\xff")
(process:5): GLib-GIO-CRITICAL **: TIME: g_file_new_for_path: assertion 'path != NULL' failed
nil

[psychon]

First impression: If https://docs.gtk.org/glib/programming.html#utf-8-and-string-encoding states

it is the application developer’s responsibility to validate input strings

then I would say it is the application developer's responsibility.

What would LGI do if some string does not contain valid utf8? Throw an error? How would LGI know whether any given function is documented to accept things other than utf8? I do not think the introspection data provide that kind of information.

[2-www]

there is: https://gitlab.gnome.org/GNOME/glib/-/issues/3742#note_2504984

[TingPing]

It is up to the application to safely handle strings. No bindings do this as it would be insanely slow to validate every string.

[2-www]

there is: https://gitlab.gnome.org/GNOME/glib/-/issues/3742#note_2504984

*actually it's supposed to be a null-terminated byte array but this is too