It is a usual shell display:

ME@mycomputer: ~$ echo

When I do backspace several times It becomes:


How to prevent the system word from deleting

  • 1
    Not an answer, but eshell doesn't have this problem.
    – JeanPierre
    Commented Apr 21, 2016 at 12:34

1 Answer 1


I think you're looking for comint-prompt-read-only. E.g.

(setq comint-prompt-read-only t)

should take care of it.

  • I don't know if this is a different question, but is it possible to prevent comint from deleting previous output? At the moment I could just move up with my cursor and delete stuff.
    – itmuckel
    Commented Jul 12, 2019 at 7:21

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