Matthew Woodcraft is right.
On top of that, I'd add that the select-editor mechanism doesn't work
properly:
4) if a system has only one editor, sensible-editor calls select-editor,
that creates a zero-length file ~/.selected-editor, without asking
anything to the user. If, at a second time, another editor is added to
the system, select-editor finds the zero-length file and does not ask
anything to the user.
Please, consider also, as a general rule, that asking questions to the
user, should be always avoided, unless the user is expecting it.
