Backspace, left and right in Windows integrated terminal cause prompt to go out of sync in Git bash

[JasonKleban]

• VSCode Version: 1.2.0-insider
• OS Version: Windows 10
• Terminal: Git bash

Steps to Reproduce:

1. Invoke the new integrated terminal
2. type command
3. backspace to delete some characters
4. Notice that while the command executed will be accurate to what was typed, the display of the line will be out of sync with the internal state of the terminal.

[Tyriar]

I haven't actually seen this, could you include a screenshot or a gif? I'm assuming you set it to the bash.exe not the git bash executable also?

[JasonKleban]

OK, this is happening very easily to me. Unfortunately I couldn't figure out any modern programs that show the actual keystrokes in an overlay for Windows (anybody know??) and this isn't a great capture, but it does show it happening a few times, should be obvious without the keystrokes showing. On the first line when I try to delete all the text including "echo", I can't backspace any more but the echo still shows. executing what looks like echo whatever is really just whatever in the buffer.

Then the next line I just show that echo whatever without any backspaces normally works fine and got a surprise that the newline wasn't printed!

Then I tried a third example and that one exhibited no glitches finally.

[moshahmed]

Windows7 Start > cmd > cd c:\gitportable-209-x64\bin > bash.exe
user@host MING64 /bin
$ ast (backspace becomes space)

This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
Segmentation fault

[gerane]

I get this in powershell too. I don't use cygwin so it is not caused by that when I am in PowerShell.

[gerane]

I also see issues when moving left and right. The visual cursor can get slightly out of sync with where it really is. Usually it is a space or 2 when it happens.