How to get smart tabs (“indent with tabs, align with spaces”) behavior in Xcode?

Question

I used to use tabs for indentation and spaces for alignment. Like so (arrows show tabs and dots show spaces).

Answer 1

If you want to remap the standard Xcode's ⌘+[ to TAB, you can do the following:

1. Install a program called "Karabiner".

2. Go to Preferences ~> "Misc and Uninstall"

3. In "Custom Setting" section click on the "Open private.xml" button

4. Open the file and replace its content with the following code:

    
   
       
           Tab instead of Command+[
           private.swap_tab_and_cmnd+[
           
               __KeyToKey__
               KeyCode::TAB, ModifierFlag::NONE,
               KeyCode::BRACKET_RIGHT, ModifierFlag::COMMAND_L | ModifierFlag::NONE
           
        
   
   

5. Go to Preferences ~> "Change Key" ~> click on "Reload XML" button

6. Put a tick in the checkbox which is called "Tab instead of Command+["

7. Enjoy

PS: Please note that this setting works globally on your machine, not just in Xcode. However, I am sure that google might help you to find a solution how to customize it even further, applying the changes only to Xcode.