player: use XDG_STATE_HOME for watch_later

A pain point for some users is the fact that watch_later is stored in
the ~/.config directory when it's really not configuration data. Roughly
2 years ago, XDG_STATE_DIR was added to the XDG Base Directory
Specification[0] and its description, user-specific state data, actually
perfectly matches what watch_later data is for. Let's go ahead and use
this directory as the default for watch_later. This change only affects
non-darwin unix-like systems (i.e. Linux, BSDs, etc.). The directory
doesn't move for anyone else.

Internally, quite a few things change with regards to the path
selection. If the platform in question does not have a statedir concept,
then the path selection will simply return "home" instead (old
behavior). Fixes #9147.

[0]: https://gitlab.freedesktop.org/xdg/xdg-specs/-/commit/4f2884e16db35f2962d9b64312917c81be5cb54b

1 files changed, 1 insertions, 0 deletions

diff --git a/common/global.h b/common/global.h
index f95cf28a4d..a7e4c4cee8 100644
--- a/common/global.h
+++ b/common/global.h
@@ -10,6 +10,7 @@ struct mpv_global {
     struct mp_client_api *client_api;
     char *configdir;
     struct stats_base *stats;
+    bool no_statedir;
 };
 
 #endif