database: Store directory paths as relative, not absolute.

We were already storing relative mail filenames, so this is consistent
with that. Additionally, it means that directory documents remain
valid even if the database is relocated within its containing
filesystem.

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/database.cc b/lib/database.cc
index f7f9943..0ef59ea 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -86,7 +86,7 @@ typedef struct {
  *
  * The directory document is indexed with a single prefixed term:
  *
- *	directory:	The directory path (an absolute path)
+ *	directory:	The directory path (relative to the database path)
  *
  * and has a single value:
  *
@@ -639,6 +639,8 @@ notmuch_database_set_directory_mtime (notmuch_database_t *notmuch,
 	return NOTMUCH_STATUS_READONLY_DATABASE;
     }
 
+    path = _notmuch_database_relative_path (notmuch, path);
+
     db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
     db_path = directory_db_path (path);