I'm not able to duplicate
Terisa de morgan's issue with EpubSplit. Once it's on the Library Context Menu, I don't get the "Add "%s" to toolbars or menus" dialog anymore in English or in Spanish. The code uses the internal plugin name, not a translated version.
BetterRed - For testing purposes, I can trigger the Add "%s" to toolbars or menus" dialog again by manually installing the same plugin again without waiting for an update.
IMHO, asking Calibre to check for existing plugins configured in the Favourites plugin isn't very feasible.
It might be possible for
check_for_add_to_toolbars()(src/calibre/gui2/preferences/plugins.py:415) to also check for keyboard shortcuts, but could it tell the difference between user added custom shortcuts and default shortcuts?
A simple workaround is to add the plugins to a menu or toolbar you don't use. I, for one, didn't even know there was a separate Cover view context menu.
