feat(defaults): session data in $XDG_STATE_HOME #15583

See: https://gitlab.freedesktop.org/xdg/xdg-specs/-/commit/4f2884e16db35f2962d9b64312917c81be5cb54b

- Move session persistent data to $XDG_STATE_HOME Change 'directory',
  'backupdir', 'undodir', 'viewdir' and 'shadafile' default location to
  $XDG_STATE_HOME/nvim.
- Move logs to $XDG_STATE_HOME, too.
- Add stdpath('log') support.

Fixes: #14805

1 files changed, 7 insertions, 7 deletions

diff --git a/src/nvim/log.c b/src/nvim/log.c
index 7d50ecf69e..815d53b570 100644
--- a/src/nvim/log.c
+++ b/src/nvim/log.c
@@ -51,7 +51,7 @@ static bool log_try_create(char *fname)
 
 /// Initializes path to log file. Sets $NVIM_LOG_FILE if empty.
 ///
-/// Tries $NVIM_LOG_FILE, or falls back to $XDG_CACHE_HOME/nvim/log. Path to log
+/// Tries $NVIM_LOG_FILE, or falls back to $XDG_STATE_HOME/nvim/log. Path to log
 /// file is cached, so only the first call has effect, unless first call was not
 /// successful. Failed initialization indicates either a bug in expand_env()
 /// or both $NVIM_LOG_FILE and $HOME environment variables are undefined.
@@ -69,16 +69,16 @@ static bool log_path_init(void)
       || log_file_path[0] == '\0'
       || os_isdir((char_u *)log_file_path)
       || !log_try_create(log_file_path)) {
-    // Make kXDGCacheHome if it does not exist.
-    char *cachehome = get_xdg_home(kXDGCacheHome);
+    // Make kXDGStateHome if it does not exist.
+    char *loghome = get_xdg_home(kXDGStateHome);
     char *failed_dir = NULL;
     bool log_dir_failure = false;
-    if (!os_isdir((char_u *)cachehome)) {
-      log_dir_failure = (os_mkdir_recurse(cachehome, 0700, &failed_dir) != 0);
+    if (!os_isdir((char_u *)loghome)) {
+      log_dir_failure = (os_mkdir_recurse(loghome, 0700, &failed_dir) != 0);
     }
-    XFREE_CLEAR(cachehome);
+    XFREE_CLEAR(loghome);
     // Invalid $NVIM_LOG_FILE or failed to expand; fall back to default.
-    char *defaultpath = stdpaths_user_cache_subpath("log");
+    char *defaultpath = stdpaths_user_state_subpath("log", 0, true);
     size_t len = xstrlcpy(log_file_path, defaultpath, size);
     xfree(defaultpath);
     // Fall back to .nvimlog