Xcode 11 - Duplicate Selection

Xcode 11 Duplicate Line or Selection.md

1. Open directory in Finder with Cmd + Shift + G

/Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/Versions/A/Resources/

2. Open IDETextKeyBindingSet.plist with a text editor.

3. Add this in:

<key>Duplication</key>
<dict>
    <key>Duplicate Selection</key>
    <string>selectParagraph:, delete:, undo:, moveRight:, yankAndSelect:</string>
</dict>

4. Open Xcode and go to Xcode -> Preferences -> Key Bindings -> Text tab -> Scroll till you see Duplication

5. Click on Duplicate Selection, add a shortcut for it, eg. Cmd + D (remove any other bindings for this key)