Make toolbar show keyboard equivalents in its tooltips

* src/keyboard.c (parse_tool_bar_item): Add equivalent key binding to
the tooltip string of toolbar buttons.
* etc/NEWS: Announce it.
* etc/TODO: Remove its entry.  (Bug#36156)

2 files changed, 3 insertions, 2 deletions

diff --git a/etc/NEWS b/etc/NEWS
index f0d7457a627..0cfac248a32 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -125,6 +125,9 @@ This is intended mostly to help developers.
 ** Emacs now requires GTK 2.24 and GTK 3.10 for the GTK 2 and GTK 3
 builds respectively.
 
+---
+** The toolbar now shows the equivalent key binding in its tooltips.
+
 
 * Startup Changes in Emacs 27.1
 
diff --git a/etc/TODO b/etc/TODO
index 273455c386e..34de81b147c 100644
--- a/etc/TODO
+++ b/etc/TODO
@@ -176,8 +176,6 @@ See the 'test' directory for examples.
 ** In Emacs Info, examples of using Customize should be clickable
    and they should create Custom buffers.
 
-** The toolbar should show keyboard equivalents in its tooltips.
-
 ** Add function to redraw the tool bar.
 
 ** Redesign the load-history data structure so it can cope better