GDB: Setting the prompt from python

[Matt Rice]

On Sun, Oct 18, 2020 at 3:27 AM Paul Smith via Gdb <gdb@sourceware.org> wrote:
>
> Is it possible to change the GDB prompt from within Python, such that
> the prompt contains a trailing space (like the default prompt)?
>
> I cannot figure it out.
>
> If I run set prompt from the normal command interpreter I can easily
> just put a space at the end and it works:
>
>   (gdb) set prompt XXX\n
>   XXXprint 1
>   1
>
>   (gdb) set prompt XXX \n
>   XXX print 1
>   1
>
> showing \n to indicate where I type ENTER
>
> Fine.  But this doesn't work from Python:
>
>   (gdb) python
>   > gdb.execute('set prompt XXX ', True)
>   > ^D
>   XXXprint 1
>   1
>
> It seems that no matter what I do, the trailing space is stripped off.
> Is there some other way to set the prompt from Python?

Weird, using the python prompt hook does work.

(gdb) python
>gdb.prompt_hook = lambda old_prompt: "XXX "
>end
XXX quit