Ctrl-c aborts input and leaves the previous partially edited line visible. Ctrl-g cancels Ctrl-r searches. So if you want to search and then search again you

Ctrl-c aborts input and leaves the previous partially edited line visible. Ctrl-g cancels Ctrl-r searches. So if you want to search and then search again you can clear the history position with Ctrl-g. Ctrl-s moves forward if you went too far with Ctrl-r. Ctrl-r twice in a row retrieves the previous search. Alt-u upper cases. Alt-l lower cases. Alt-c capitalizes. From current position to end of word.