Developer credits
Git commits in Moodle 3.7.5 by Colin Campbell
commit c0cf6abf34ce96b132e70ca278db9f147eee0c50 Author: Colin Campbell <colin@umn.edu> Date: Thu, 10 Oct 2019 09:38:25 +0800 Tag: v3.7.5 MDL-52189 file: skip deleting temp files that appear during cleanup