Compare instantly 2 scripts and find differences?

If I want to find different part between 2 long scripts,

How can it be done fastly?

UniSciTe seems not have.

Then Monodevelope or 3rd?

Try this for C#… Code Compare

http://www.devart.com/codecompare/

Another good free Diff/Merge tool is WinMerge (for Windows).

wow WinMerge is very nice. and works well with unityscript. I didn’t test Code Compare