Here is another use case when the mechanism fails: I'm using vim.nox as the default editor. The editor was set by me using update-alternatives --config editor. Apparently the binary was move by the package maintainer from /usr/bin/vim.nox to /usr/libexec/vim/vim.nox at some time.
As a result, the script falsely complained on the command line when calling the editor | /usr/bin/sensible-editor: 25: /usr/bin/vim.nox: not found | /usr/bin/sensible-editor: 28: nano: not found | /usr/bin/sensible-editor: 31: nano-tiny: not found sensible-editor has added a second configuration in ~/.sensible-editor, but fails to keep both in sync. Additionally, none of the "nano" variants are installed or wanted.
