bug#8491: 24.0.50; File "proxy icon" in NS title bar on OS X is not reliably shown

bug#8491: 24.0.50; File "proxy icon" in NS title bar on OS X is not reliably shown

[Steve Purcell]

On OS X, try opening a file in a GUI frame:

  /Applications/Emacs.app/Contents/MacOS/Emacs -Q ~/.bashrc

There will be a proxy icon for the file in the Emacs frame's title bar.

Now eval the following expression:

   (setq frame-title-format '("%b"))

The proxy icon will disappear. It can be made to reappear by setting
frame-title-format back to t, and at times the icon has then remained visible
even when re-setting a custom value for frame-title-format.

I'd expect that the icon would always be shown when the current buffer
has an associated file, and the current behaviour appears incorrect.

Please let me know if I can help by providing further info.


In GNU Emacs 24.0.50.1 (x86_64-apple-darwin, NS apple-appkit-1038.35)
of 2011-04-12 on black.porkrind.org
Windowing system distributor `Apple', version 10.3.1038
configured using `configure  '--host=x86_64-apple-darwin' '--build=i686-apple-darwin' '--with-ns' 'build_alias=i686-apple-darwin' 'host_alias=x86_64-apple-darwin' 'CC=gcc -mmacosx-version-min=10.5''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: en_US.UTF-8
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-: <up> ( s e t q SPC f r a m e - t i t l e - f o 
r m a t SPC " <backspace> ' ( % <backspace> " % b " 
) ) <return> <down> <down> <down> <down> <down> <down> 
<down> C-x 2 C-x 1 C-x b C-g C-x 2 C-x o C-x b <return> 
C-x o : C-/ M-: <up> C-e <left> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
t <return> C-x 1 M-: <up> <up> <return> C-x 2 C-x o 
C-x b <return> C-x o C-x o C-x o M-: <up> C-e <left> 
<left> SPC " SPC - SPC s p e c i a l " <return> C-x 
1 C-x o C-g <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <left> C-x C-e s-x M-x 
e m a s <backspace> <backspace> <backspace> <backspace> 
r e p o t <tab> <backspace> <tab> r t <tab> <retur
n>

Recent messages:
("%b")
Quit
Undo!
t
("%b")
("%b" " - special")
Quit
t
kill-region: The mark is not set now, so there is no region
Making completion list...

Load-path shadows:
None found.

Features:
(shadow sort mail-extr message format-spec rfc822 mml mml-sec mm-decode
mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums
mailabbrev mail-utils gmm-utils mailheader emacsbug url-util url-parse
auth-source eieio byte-opt bytecomp byte-compile cconv macroexp assoc
gnus-util time-date password-cache url-vars mm-util mail-prsvr help-mode
easymenu view vc-git tooltip ediff-hook vc-hooks lisp-float-type mwheel
ns-win tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core frame cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs
button faces cus-face files text-properties overlay md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
make-network-process ns multi-tty emacs)

bug#8491: Still present

[Steve Purcell]

Just wanted to note that this bug is still present in Emacs HEAD as of yesterday. It's very convenient to be able to drag the file icon to other applications, so I miss it when it's mysteriously not there.

bug#8491: Still present

[Alan Third]

Steve Purcell <steve@sanityinc.com> writes:

> Just wanted to note that this bug is still present in Emacs HEAD as of
> yesterday. It's very convenient to be able to drag the file icon to
> other applications, so I miss it when it's mysteriously not there.

Finally fixed in Emacs 27.
-- 
Alan Third