GDB: Setting the prompt from python

[Paul Smith]

On Sun, 2020-10-18 at 09:24 +0000, Matt Rice wrote:
> > 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

Aha!  Thanks.

Well, it kind of makes sense to me but is unfortunate.  The problem is
probably that GDB is stripping the command that is passed to it via
gdb.execute() before running it so the whitespace goes away before GDB
tries to run the command.

In the prompt_hook version the static string containing the space is
returned and so is preserved.