bug#3529: 23.0.94; C-h k mouse-1 on mode-line fields with menus brings up the menu

[Stefan Monnier]

> It should describe mouse-1 at that point. It should not just bring up
> the menu. IOW, it should act just like C-h k mouse-1 does when you
> click the buffer name: give you info about what mouse-1 does at that
> position.

The current behavior was made specifically so that C-h k can be used to
figure out which command is run by a given menu entry.  I agree that it
can sometimes be useful to figure what the name of the menu, but
currently Emacs does provide any way for the user to distinguish between
the two cases, so depending on how you define the menu (either as
a keymap or as a commmand that pops up a menu), you can either find info
about the bindings in the menu, or info about the menu itself.

I personally need info about the bindings a lot more often than info
about the menus, which is why we have the current behavior.

It's also in line with the behavior of C-h k for menubar menus.


        Stefan