gistfile1.txt

(from :http://www.entropy.ch/blog/Developer/2010/04/15/Git-diff-for-Localizable-strings-Files.html)

First, add this to the project’s .git/info/attributes file:
+

*.strings diff=localizablestrings

(Unfortunately you do have to add it to every project, there doesn’t seem to be a global attributes configuration file)

Second, add this to your ~/.gitconfig file:
+

[diff "localizablestrings"]
	textconv = "iconv -f utf-16 -t utf-8"