Editting the command with Vim does not work on macOS

[12joan]

To reproduce

Ensure $EDITOR is absent or set to Vim. (In theory, any non-GUI editor should produce the same result. Editing commands probably doesn't work at all with GUI editors—this needs to be tested.)

1. please say hello
2. Press e to edit the command in Vim
3. Edit the command and exit Vim

Expected

The prompt is shown again with the edited command

Actual

The command is unchanged