bug#50186: Shell in emacs very annoying using zsh

[周任飞]

Hello Eduardo Ochs,

> and then use Zsh a bit with comint-process-echoes set to true and a

> bit with comint-process-echoes set to nil - use `M-x det' and `M-x
> den' to change the value - to see if something changes?

First I noticed that comint-process-echoes is not defined in shell mode.

Then I switched the shell buffer to comint mode. Then, in both det and

den settings, the problem still happens.

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Zhou Renfei