bug#32032: 26.1; Emacs 26 opens under X with blank window

[gnu_lists]

> >  Given that there are known bugs with this feature that no one is
> >  working on, perhaps we should introduce an optional configure switch
> >  to build without double-buffering.
> > 
> >  Agreed. Does it make sense for a Emacs source code newbie to chip in here?
> > 
> >  Of course.  We were all newbies at some point.
> > 
> > I created a new `configure.ac` (see 
> > https://gist.github.com/halloleo/8f4ba4b1ffcc3874a2ee0e16e03f6618)
> > which provides a `--without-backbuffer` option:
> > 
> >     ./configure --without-gnutls --without-backbuffer
> 
> Thanks.
> 
> > then builds an Emacs exe which starts up properly on unbuffered X servers 
> > without any custom `.emacs` file.
> > 
> > Where do I put the `configure.ac` file and how do I create a pull request 
> > for it?
> 
> We don't (yet) work with pull requests.  Please make the change in
> your local clone of the Emacs repository, on the master branch, and
> then use "git format-patch" to prepare a patch and post the patch
> here.
> 
> (Please consult CONTRIBUTE in the repository for some of the practices
> we advise to use with contributed code.)

Will do. Will try to post patch tomorrow.

Happy emacsing! : -)