(Backspace): Undo only when the current key sequence is not empty.  Otherwise unhandle it.
(Backspace): Undo only when the current key
sequence is not empty.  Otherwise unhandle it.

xmirror/m17n-db,sanskrit-coders/m17n-db,xmirror/m17n-db,xmirror/m17n-db,xmirror/m17n-db,sanskrit-coders/m17n-db,sanskrit-coders/m17n-db