Override the Undo delegator to forbid any changes before the I/O mark. It beeps if you try to insert or delete before the "iomark" mark. This makes the shell less confusing for newbies.
Override the Undo delegator to forbid any changes before the I/O mark.
It beeps if you try to insert or delete before the "iomark" mark.
This makes the shell less confusing for newbies.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator