When inotify isn't available, watch.c uses readdir() to look for new .torrent files. It keeps a list of old .torrent files internally so that it doesn't try to keep re-adding the same file. This list is stored in an evbuffer. As part of the libevent2 upgrade (#3836), r11594 changed how the buffer is searched by replacing the (deprecated) event_find() call with libevent2's evbuffer_search(). However the latter's semantics are different in that searching stops when '\0' is reached, so '\0' is no longer a good filename delimiter. Fixed by changing watch.c's internal delimiter from '\0' to '\t' ... so all those torrents with tabs in their filenames had better watch out.
#define WATCHDIR_POLL_INTERVAL_SECS 10
-#define FILE_DELIMITER '\0'
+#define FILE_DELIMITER '\t'
static void
watchdir_new_impl( dtr_watchdir * w UNUSED )