Letter q prefixed every prompt line

I know the stack could be deep on dependencies, and this could be in prompt 3rd party software, or colorizing, etc, but I'd like to document this issue and see if I can get to the bottom of it.

I upgraded ipdb, which brought in iPython 8.6.0

I know get the letter q before every prompt:

TERM is set to linux. I'm using securecrt for a terminal.

The escape code appears to be:


Which is a little odd because I can't find that code in the linux term escape codes.

iPython 7.34.0 does not do this.
iPython 8.0.0 does do this

So this appears to be a change in ipython 7 to 8. The only dependencies that change when I swap versions is:

```
$ poetry add 'ipython<8'

Updating dependencies
Resolving dependencies... (1.8s)

Writing lock file

Package operations: 0 installs, 1 update, 2 removals

• Removing pure-eval (0.2.2)
• Removing stack-data (0.6.2)
• Updating ipython (8.0.0 -> 7.34.0)
```

Maybe this is a bug with my terminal emulator? I will check with them as well.