The shortcuts "^A", "^E", "^U", and "^K" do somehow what they do in
readline, and you can exit selector without doing anything by either
-interrupting the command with "^C" or by typing "^G".
+interrupting the command with "^C" or by typing "^G" or the Escape
+key.
The "^R" key switches between the standard multi-substring mode and
the regexp mode, and "^I" between the case-sensitive and