Ubuntu 20.04 の command-not-found
が動かなくなってた.
いつからか不明.
$ /usr/lib/command-not-found emacs
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:
command-not-found version: 0.3