[Doc-SIG] Diffing reStructuredText documents that only differ by formatting

[Jeffrey C. Jacobs]

I am wondering if there is a way to diff 2 versions of a reStructuredText
document that differ only by line breaks within paragraphs such that those
differences do not trigger a diff entry.  In other words, I wonder if there is a
tool out there where:

this is one
reStructuredText
paragraph

Is considered equivalent to:

this is one reStructuredText paragraph

Does anyone have any ideas how this can be accomplished, especially with respect
to VCS differences, e.g. svn?

Thanks!

Jeffrey.