Sorry for the delay…
I confused the things in the above post.
I mean “each snippet item properties shortcut”.
Currently, a shortcut key assigned to a core command can be assigned to a snippet item without warning.
And there are other issues. Try these steps:
Assign a shortcut key to a core command.
Assign the same key to 2 (or more) snippet items.
Press the key. It shows the snippet items in a menu.
Press Esc key to cancel the menu.
** Issue 1: There’s a sound.
(There’s no sound if the key is not assigned to a core command.)
Now go on:
Suppose the key mentioned above is Ctrl+;.
Assign Alt+; to another core command (X).
Press Ctrl+; to show the snippet items in a menu.
Press Alt key to cancel the menu.
** Issue 2: The core command (X) is triggered (by Alt+;).