We should aim to provide the best possible Emacs experience on every
platform, so I doubt there will be much opposition to making that cocoa
port better. We've discussed with Jan a while back, that it's ok to add OS
X-specific features, as long as they are enabled conditionally and the the
GNUStep version is not affected by them.

I suspect that a lot of Emacs users are OS X users these days (many friends
of mine who were long-time GNU/Linux users work on OS X today, me
included), so the impact of improving the cocoa port can be potentially
huge!

On 28 December 2015 at 08:51, YAMAMOTO Mitsuharu <
mituharu@math.s.chiba-u.ac.jp> wrote:

> >>>>> On Thu, 24 Dec 2015 09:28:35 -0800, John Wiegley <jwiegley@gmail.com>
> said:
>
> >> The Mac port based on the `emacs-25' branch is now available from
> >> https://bitbucket.org/mituharu/emacs-mac.git (the `work' branch)
>
> >> Note that this is a bare development branch and documentations are
> >> not updated yet. You don't have to specify --with-mac for configure
> >> options because it is the default now.
>
> > Thank you, Yamamoto-san! This is fantastic, and will help me to
> > track the latest development more closely than a build I only use
> > for testing.
>
> > How much work would it be for us to merge this build flavor into the
> > main emacs-25 branch?
>
> Originally, the Mac port was not intended for inclusion to the
> main distribution, but for my private and classroom use.  But if
> the inclusion is useful and meaningful for many people, then I'll
> make some effort to do that.
>
> I have one concern about the inclusion of the Mac port, that is,
> whether it can be merged with its full features.  If not, then I'll
> have to provide some additional patch anyway, and that's not
> beneficial to the current users of the Mac port.  In particular, I
> suspect the inclusion of the following features might be controversial
> whether they can be regarded as specific to Mac:
>
>   * Pixel-based mouse wheel smooth scroll for newer mice/trackpads.
>   * When the clipboard has both textual and image data, yank inserts
>     the former and push both into the kill ring so the latter can be
>     inserted with yank-pop afterwards.
>   * The function `mac-start-animation' provides several animation
>     effects via Core Animation.  You can see the default
>     animations with buffer switching by horizontal
>     swiping/flicking (horizontal movement), exiting from the
>     splash screen by typing "q" (fade out), and the "About
>     Emacs" (ripple effect) and "Preferences..." menu items (swipe
>     effect) in the application menu in the menu bar.
>   * Emoji display, with support of variation sequences (text-style
>     vs. emoji-style) and modifiers (skin tones) if the font supports
>     them.
>   * Blend-and-blur of background color on OS X 10.10 and later
>     via face's stipple attribute: e.g., (set-face-stipple
>     'fringe "alpha:50%").
>
>                                      YAMAMOTO Mitsuharu
>                                 mituharu@math.s.chiba-u.ac.jp
>
>