Space problem in Xcode 4.0

Question

I have installed a new xcode last night when i was checking for new functions. There was a lock image next to the name of the files and above the editor on the right most side. I clicked that lock and then i noticed that the space is replaced with some unknown character. I have attached the image below. Now how can i remove these characters and make it normal space. If anyone can help me out with this it will be great.

Thanks in advance

Answer 1

Ok, so I write an answer, as it seems my comment was correct : )

You just need to disable to invisible characters. Go the the menu > Editor > Hide Invisibles.

Note that you can also customize the keyboard shortcuts, so you're able to toggle the invisible characters on and off...

I usually do that, so I can quickly see if I have tabs or spaces, for instance...