[konsole] [Bug 397757] Background Color Erase: bce madness when line too long

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=397757

ninjalj at gmail.com changed:

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                 CC|                            |ninjalj at gmail.com

--- Comment #5 from ninjalj at gmail.com ---
(In reply to Per Drive from comment #4)
> UP.
> I have a related bug so instead of opening a new one, I'll try updating it
> to give it visibility. And I think they have the same origin.
> 
> To me the bug lies in the calculations of the prompt size as it incorporates
> control characters which should not be taken into account.
> 
> So, the way to reproduce it is way simpler than in the original submission:
> 
> Step one: create a color prompt such as:
> > PS1='${debian_chroot:+($debian_chroot)}\033[93m\u@\h:\w\033[0m > '

Terminal control sequences in PS1 should be enclosed between \[ and \], as in:

PS1='${debian_chroot:+($debian_chroot)}\[\033[93m\]\u@\h:\w\[\033[0m\] > '

so bash can keep a correct idea of where the cursor is.

See
https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#Controlling-the-Prompt

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