bug#30544: 26.0.91; ansi-term duplicates 2 line zsh prompts any time windows change (maybe other times)

[Aaron Jensen]

On Wed, Mar 14, 2018 at 10:34 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Aaron Jensen <aaronjensen@gmail.com>
>> Date: Wed, 14 Mar 2018 08:59:55 -0700
>> Cc: Noam Postavsky <npostavs@gmail.com>
>>
>> I saw that you've been doing some term.el work recently. Do you have
>> an idea what could be causing this?
>
> See Glenn's message with bisection: as expected, this is due to the
> telling the shell to resize its window.

I don't know if this was directed at Noam or myself, but one
interesting thing is that iTerm also has artifacts when resizing, but
only if resizing to be horizontally smaller. term.el appears to have
artifacts every time any size change is made (horizontal or vertical).