mjhjmtu

I would like to bind both Super+1 and Super+Home as shortcuts to the "Switch to workspace 1" action in GNOME 3. Is there a way to do this?

I think that to achieve this there would either have to be a way to assign multiple keyboard shortcuts to the same action or there would have to be a way to switch workspaces via a command-line action (which would alet me create a shortcut for it in the "custom shortcuts" section). But I'm not sure these are possible...

Yes, this is a dconf setting and the value is an array of strings which means it accepts multiple shortcuts. You can do that via dconf-editor if you navigate to

/org/gnome/desktop/wm/keybindings/switch-to-workspace-1

and turn Use default value OFF then insert Custom value: ['<Super>Home', '<Super>1']

Or if you prefer CLI you can use dconf or gsettings e.g.

gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-1 "['<Super>Home', '<Super>1']"

Keep in mind the values must be quoted and separated by comma+space.

Adding Super+1 and friends for workspace switching with dconf:

dconf write /org/gnome/desktop/wm/keybindings/switch-to-workspace-1 "['<Super>Home', '<Super>1']"
dconf write /org/gnome/desktop/wm/keybindings/switch-to-workspace-2 "['<Super>2']"
dconf write /org/gnome/desktop/wm/keybindings/switch-to-workspace-3 "['<Super>3']"
dconf write /org/gnome/desktop/wm/keybindings/switch-to-workspace-4 "['<Super>4']"

It will not create workspaces in Gnome 3 which create them dynamically when there are windows on a previous one.