If you are working with a complicated command in the terminal trying to get
the arguments just right. Such as this
curl https://api.stripe.com/v1/customers \ -u sk_test_BQokikJOvBiI2HlWgH4olfQ2: \ -d description="Customer for firstname.lastname@example.org" \ -d source=tok_189fCz2eZvKYlo2CsGERUNIW
It can be tedious to move to and modify various parts of the command.
However, by hitting
Ctrl-x Ctrl-e, the contents of the command buffer
will be opened into your default editor (i.e.
$EDITOR). This will make
editing the command a bit easier. Saving and quitting the editor will put
the updated command in the command buffer, ready to run.
Ctrl-x Ctrl-e with an empty command buffer if you want to start
crafting a command from scratch or if you are pasting one in from somewhere.