On Tue, Dec 17, 2019 at 12:49:07PM +0900, YAMAMOTO Mitsuharu wrote:
> 
> The Mac port (not the NS port in your report) also has the problem of
> Mach port leaks in -[NSWindow setRepresentedURL:] on macOS 10.15.  I
> think this is a bug in AppKit or some lower-level stuff.  I'll file it
> to Apple later.
> 
> I've installed a workaround into the "work" branch of the repository
> of the Mac port:
> 
>   https://bitbucket.org/mituharu/emacs-mac/commits/19c97087065b7ca64b71f392a453673042e024c6

Thank you for finding the problem!

Can someone on 10.15 try the attached patch, please?
-- 
Alan Third