Can I suppress the menu keyboard shortcuts with the alt key in DrRacket on linux and make my own keybinding to alt+f alt+s etc?
I found that I need to change gtk3 settings:
gtk-enable-mnemonics = 0
It disables alt-menu for all gtk3 apps.
I assume it might be possible to apply these settings to one specific application, but I didn't find how.
I think you want to uncheck the “Enable keybindings in menus” preference: