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Re: [GUI emacs:term.el] Possible regression causes word wrapping to brea

From: Eli Zaretskii
Subject: Re: [GUI emacs:term.el] Possible regression causes word wrapping to break term display in zsh
Date: Sat, 26 Nov 2016 11:12:52 +0200

> From: Nicholas Ochiel <address@hidden>
> Date: Sat, 26 Nov 2016 02:04:56 +0300
> Cc: address@hidden
> Steps:
> 0. Open gui emacs in X.
> 1. M-x term (char mode, /bin/zsh)

Are zsh and a GUI frame necessary for reproducing this issue?

> 2. Enter a long input that causes text to wrap at fringe.
> 3. Notice that point jumps irregularly.

Do you mean point jumps by itself, or do you mean it jumps when you
try moving it with cursor motion keys?  IOW, please describe what
triggers these jumps.

> 4. Move point and attempt to edit some portion of wrapped line in terminal.
> 5. Notice that prompt or previous terminal output is overwritten in an
> unpredictable manner.
> 6. Further operations on text cause unpredictable editing behaviour.
> 7. This occurs regardless of truncate-lines, visual-line-mode.

Did you try to disable the fringes?  Did it help?

> Reproduced with:
> - Emacs 24.5.1,
> - emacs-snapshot
> This odd behaviour was also reported here:
> 1. https://github.com/syl20bnr/spacemacs/issues/5520

The discussion there seems to say it has to do with something called
oh-my-zsh and/or multi-term?  Does the recipe you posted reproduce the
problem in "emacs -Q"?


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