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Message-ID:	<5b7773eb.1c69fb81.5d9c7.2e20@mx.google.com>
Date:	Fri, 17 Aug 2018 18:18:35 -0700 (PDT)
From:	Steven Penny <svnpenn AT gmail DOT com>
Subject:	Re: scrolling through history in cygwin terminal window line gets garbled
To:	cygwin AT cygwin DOT com
References:	<8098c8d2-38ab-0fc0-5eea-8d7009b821e8 AT towo DOT net>
User-Agent:	Tryst/2.8.0 (cup.github.io/tryst)

On Fri, 17 Aug 2018 16:36:57, Thomas Wolff wrote:
> Please test the following:
> * Set you prompt to some basic string, e.g. PS1=%. Does that change 
> anything?
> * Mintty 2.7.5 changed the default wraparound behaviour to become 
> compatible with the xterm default. With setting -o OldWrapModes=true, 
> does that change anything?
> * Can you cross-test this in xterm?
> * Does it happen in a freshly-started mintty? If it only happens later, 
> which programs did you run in the meantime?
> * Make a screen log demonstrating a minimal test case, please.

This bug has bothered me for years, I would love to see it fixed. Here is a
simple test case:

    $ cat ~/.bash_history
    echo ABCDEF ABCDEF ABCDEF ABCDEF
    echo 0123456789 0123456789 0123456789 0123456789 0123456789 0123456789

Result:

    $ echo ABCDEF ABCDEF ABCDEF ABCDEF        234

What I tried:

1. PS1=%
2. "TERM" with no "am" or "bw"
3. "TERM" with both "am" and "bw"
4. "TERM" with "am" only (couldnt find one with "bw" only)

If you have a custom terminal that this works with - provide the "infocmp"
output and I will try it. Note that I am not using Mintty, I am just using
sh.exe and conhost.exe, so it seems that mintty is not the culprit but perhaps
Cygwin DLL or Readline.


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