patch 8.2.3426: crash when deleting a listener in a listener callback Commit: https://github.com/vim/vim/commit/4b4b1b84eee70b74fa3bb57624533c65bafd8428 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 11 15:06:44 2021 +0200 patch 8.2.3426: crash when deleting a listener in a listener callback Problem: Crash when deleting a listener in a listener callback. (Naohiro Ono) Solution: Mark the listener and delete it later.