We see:
(C-_, C-x C-u)
Incremental undo, separately remembered for each line.
Each line? Fancy. I'd trade it for a way to back out once one has
undone too much. Like real emacs, one can do e.g., ^F to break the
undo "habit" and then begin undoing the undos. With bash there is no
way but to continue undoing, continue the destruction. Other approach:
gimp has a redo key.
We see:
revert-line (M-r)
Undo all changes made to this line. This is like executing the
undo command enough times to return the line to its initial
state.
Thanks but all I wanted to do was undo one undo...
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