Re: Emacs Mac port

[YAMAMOTO Mitsuharu]

The second update of the Mac port based on Emacs 26.1 is now available
from

  ftp://ftp.math.s.chiba-u.ac.jp/emacs/emacs-26.1-mac-7.2.tar.gz

and Git repository is also available at

  https://bitbucket.org/mituharu/emacs-mac.git

                                     YAMAMOTO Mitsuharu
                                address@hidden

** Fixed bugs

*** Buffer contents are not displayed on macOS 10.14.
This is mainly because now NSViews are backed by Core Animation Layer
(layer-backed) by default and non-deferred drawing into views no
longer works.  Instead of switching to deferred drawing (i.e., draw
only inside -[NSView drawRect:]), we draw into our own backing bitmap
in a non-deferred way as before, and update the view contents with the
resulting image via -[NSView updateLayer].  This "application-side
double buffering" is also available on OS X 10.8 - macOS 10.13 if you
set the frame parameter `inhibit-double-buffering' to nil when
creating a frame.  Just like on macOS 10.14, such a frame does not do
LCD smoothing.

*** Screenshot grabbed via Services is displayed in wrong size when we
have display mirroring between Retina and non-Retina displays.

*** Cursor movement just after frame resize sometimes leaves garbage.

*** Crash by the Fall_threads call from the GUI thread at the select
emulation when there are multiple Lisp threads.

*** Info title has ASCII underline unlike other window systems.

*** Vertical scroll bar is created as horizontal if frame font height
is short.

** Improvements

*** macOS 10.14 adds property :appearance to (mac-application-state).
The value may be "NSAppearanceNameAqua" or "NSAppearanceNameDarkAqua".

*** Add new color format "mac:COLOR-LIST-NAME:COLOR-NAME" and
"mac:COLOR-NAME" (shorthand for "mac:System:COLOR-NAME").  The actual
color may be different depending on the global appearance setting on
macOS 10.14.  For example, "mac:textColor" is black on the Light Mode
but is white on the Dark Mode.

*** Default frame colors respect appearance setting on macOS 10.14.
Now the default frame foreground/background color is
"mac:textColor"/"mac:textBackgroundColor", respectively.  Changes of
the system setting of the global appearance are dynamically reflected.

*** New function `mac-color-list-alist' to get the available
combinations of COLOR-LIST-NAMEs and COLOR-NAMEs.  Note that this
value is dependent on user environment and OS version.  Also, some
combinations may represent image patterns rather than colors.  For the
former cases, `(color-values "mac:COLOR-LIST-NAME:COLOR-NAME")'
returns nil.