magit/magit — pull request #1029 by shigi (2013-11-01 07:49:29+00:00)
Title: Add customization of magit-diff-options.

Add customization of magit-diff-options, "-M" and "-C".
For both options an argument value can be input. When input "90%" into
argument value of "-M" option, send "-M90%" to diff option.