Handle DeleteWord (Ctrl-W) and DeleteLine (Cmd-Backspace) in Command mode: Ctrl-W drops the previous word, Cmd-Backspace clears the line. Neither exits to Normal on empty (unlike Backspace), so command editing stays on the line.
Handle DeleteWord (Ctrl-W) and DeleteLine (Cmd-Backspace) in Command mode: Ctrl-W drops the previous word, Cmd-Backspace clears the line. Neither exits to Normal on empty (unlike Backspace), so command editing stays on the line.