Have read the GNU manuals on erasing, killing, and deleting.
In bash C-u
deletes from the cursor to the beginning. I have searched and in much disbelief can't find out what the equivalent is in emacs? Very often in a buffer and in the minibuffer I wish to delete from the cursor to the beginning of the line.
C-SPC C-a C-w
C-u
comes from GNU readline and can be configured via.inputrc
.man bash
andman readline
refer to this key combo asunix-line-discard