bug#64914: [PATCH] * gdb-mi.el: allow disabling the gdb io buffer

[LemonBreezes <look@strawberrytea.xyz>]

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No, setting gdb-display-io-nopopup to nil does not prevent the program IO from being split off into the gdb-inferior-io buffer, nor does it prevent the gdb-inferior-io buffer from popping up when debugging is started. The purpose of setting gdb-display-io-buffer to nil is to prevent the gdb-inferior-io buffer from being created altogether, instead outputting the program output to the GDB buffer itself. A user in the Doom Emacs Discord told me this used to be the behavior of gdb-mi.el but that it was changed without giving the user the option to opt out. I have not investigated that but the comments say that is a feature of GDB 6.4 onward.

On Fri, Jul 28, 2023, at 7:17 AM, Eli Zaretskii wrote:
> > From: StrawberryTea <look@strawberrytea.xyz>
> > Date: Thu, 27 Jul 2023 20:33:39 -0400
> > 
> > This change allows the user to disable the `gdb-inferior-io' buffer.
> > This is useful for users that prefer a more classical gdb experience
> > where you just have the GDB window and the source window.
> 
> Sorry, I don't think I understand why you need a new defcustom.
> Doesn't setting gdb-display-io-nopopup non-nil already achieve what
> you want?  It does here.
> 
> Thanks.
> 

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