Re: [PATCH]: Fix gdb's prompt for continue in TUI SingleKey mode

[Stephane Carrez <stephane.carrez@gmail.com>]

Tom,

On Mon, Nov 12, 2012 at 4:44 PM, Tom Tromey <tromey@redhat.com> wrote:
>
> I don't know this code at all, but I think checking immediate_quit here
> is weird.  Partly this is because I think most uses of immediate_quit in
> gdb are incorrect, and I'd like to try to phase them out -- but having
> the TUI depend on it makes this harder.  Is there some other way to do
> it?
>
> Tom

I agree this is weird but I have not found any better solution without
changing the core gdb.

The problem is that the TUI must know that a gdb command is being executed.
This way, if it interacts with the user, it has to be in the mode
where a prompt is displayed.

If we add some boolean predicate function that tells us we are executing some
command (whatever the command, a user, a set, a show, ...) this would
be fine for me.
Some kind of 'is_executing_command_p'.

Another way is to get an observer that allows the TUI to know when a command
is finished. This way, it could do switch the TUI back to the
SingleKey once the command
is done.  Adding an observer for this looks a little bit overkill.

If anybody has a better solution, I would appreciate it too!

Stephane