Improve frame-title-format and icon-title-format

* src/xdisp.c (syms_of_xdisp): Replace 'invocation-name' with the text
"%b - GNU Emacs" and replace "@" with " at ".  (Bug#41147)
* etc/NEWS: Announce the above change.

diff --git a/etc/NEWS b/etc/NEWS
index 8f10a6213da0eac658e20bb51b01153dba9f7296..db2adcec1555184b72e189f12ba31dc7ff03233c 100644 (file)
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -127,6 +127,17 @@ the mouse cursor is on the scroll bars, fringes, margins, header line,
 and mode line.  ('mwheel-mode' is enabled by default on most graphical
 displays.)
 
+---
+** The default value of 'frame-title-format' and icon-title-format' has changed.
+These variables are used to display the title bar of visible frames
+and the title bar of an iconified frame.  They now show the name of
+the current buffer and the text "GNU Emacs" instead of the value of
+'invocation-name'.  To get the old behavior back, add the following to
+your Init file:
+
+    (setq frame-title-format '(multiple-frames "%b"
+                              ("" invocation-name "@" system-name)))
+
 \f
 * Editing Changes in Emacs 28.1
 

diff --git a/src/xdisp.c b/src/xdisp.c
index 69e5a9e1cf154602350002ca8f045e3259b4993b..10ddb53dba235043b98e37033ae254c321bf09ac 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -34831,8 +34831,7 @@ and is used only on frames for which no explicit name has been set
      Oracle Developer Studio 12.6.  */
   Lisp_Object icon_title_name_format
     = pure_list (empty_unibyte_string,
-                intern_c_string ("invocation-name"),
-                build_pure_c_string ("@"),
+                build_pure_c_string ("%b - GNU Emacs at "),
                 intern_c_string ("system-name"));
   Vicon_title_format
     = Vframe_title_format