Re: [PATCH v5] Enable xwidgets on macOS

[Eli Zaretskii]

> Date: Wed, 31 Jul 2019 20:56:33 +0100
> From: Alan Third <address@hidden>
> Cc: Eli Zaretskii <address@hidden>, address@hidden
> 
> On Wed, Jul 31, 2019 at 12:33:36AM +0900, 조성빈 wrote:
> > > 2019. 7. 30. 오전 5:26, Alan Third <address@hidden> 작성:
> > >
> > > Anyway, the code contains two calls to
> > > evaluateJavaScript:completionHandler: which is a problem as we’re
> > > banned from using ObjC blocks, and the completion handler is an ObjC
> > > block. Unless GCC supports them now, which I doubt.
> > 
> > Does that mean this patch can never get merged until gcc supports blocks?
> 
> We’ve had to remove blocks from Emacs code before because gcc doesn’t
> support them, however Emacs can’t be built with gcc on recent (like,
> the last decade or something) versions of macOS anyway. I don’t really
> understand the logic, but it’s not my project.
> 
> I think it’s really up to Eli and/or RMS.

I don't think I understand the issue well enough to say anything
intelligent.  What are "ObjC blocks", and why this patch cannot do
without them?