The “Jump to Definition”-shortcut is not accessible for left-handed users in Xcode 9. There’s no Ctrl key on the right hand side.
I’ve filed a radar with Apple:
In Xcode 9, “Jump to Definition” shortcut is now Ctrl+Cmd+click (was Cmd+click in Xcode 8). On a MacBook keyboard, there’s no Ctrl key on the right hand side. This makes the shortcut not accessible for left-handed users.
Steps to Reproduce
Use MacBook trackpad with left hand.
Hold Ctrl+Cmd down with right hand, while clicking source code token with left hand.
Easy access to “Jump to Definition”-shortcut.
On a MacBook, it is very difficult to hold Ctrl+Cmd with right hand, while clicking with left hand.
This requires crossing hands over each other.
Xcode 9 beta 1
Suggestion: Use Cmd+Option+click instead.
Option button is available on left and right hand side of keyboard.
Relevant to at least US and International Dutch keyboards.