Version 34.1 of package Flycheck has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Flycheck describes itself as: ========================== On-the-fly syntax checking ========================== More at https://elpa.nongnu.org/nongnu/flycheck.html ## Summary: On-the-fly syntax checking for GNU Emacs. Flycheck is a modern on-the-fly syntax checking extension for GNU Emacs, intended as replacement for the older Flymake extension which is part of GNU Emacs. Flycheck automatically checks buffers for errors while you type, and reports warnings and errors directly in the buffer and in an optional IDE-like error list. It comes with a rich interface for custom syntax checkers and other extensions, and has already many 3rd party extensions adding new features. Please read the online manual at https://www.flycheck.org for more information. You can open the manual directly from Emacs with `M-x flycheck-manual'. # Setup ## Recent NEWS: [Not available 🙁]