Diff colorizer confused by dos newlines

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When I try to look at a color diff of a file using dos newlines, the output gets an odd sequence of ansi escapes and a stray carriage return showing up only on the + lines, but not the -. The normal looking - lines look like this:

\r\n ( from previous line ), ansi color escape, '-', whitespace, text, terminating ansi escpae ( [m ), \r\n.

The broken + lines look like this:

\r\n ( from previous line ), ansi color sequence, '+', terminating ansi escape ( [m ), whitespace, ansi color sequence, text, terminating ansi escape, ansi color sequence, stray \r, terminating ansi escape, \n.

Any suggestions on how to resolve this?
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