To abort any command which requires you to type information at the echo area, type
Ctrl+G
at any point up to where you would normally press
Return
. For instance, if you type
Ctrl+X Ctrl+F
in order to open a file, and then decide against it, type
Ctrl+G
instead of specifying a filename.
If you are using MS Windows emulation, press
Esc
to abort a command.