Accelerators don't work with the rebar_menu plugin because it creates a toolbar not a menu bar and the accelerators keys aren't recognized for that. A menu bar is a windows element created by a windows function call and if present is always the entire second line of a window. I'm not really a win32 programmer but as far as I can tell the only way to make the rebar_menu plugin handle accelerators is to make a list of all the accelerator keys from the actual menu bar and handle them by intercepting windows messages with a message handler which would be a bit involved.

To my knowledge most people use the rebar_menu plugin simply to remove the menu bar, if this is indeed the case then removing the menu bar can be done now by removing Main from menus.cfg. This currently causes a No Menu message box to appear but this can be easily removed from the code.