Hi,
Because we have a few files in which ediff doesn't handle whitespace
differences well, we have added an option to the ediff menu that allows
to add the options -Bbw to the diff command (actually an on/off toggle0,
so that whitespace is ignored in the diff output before the difference
regions are calculated.
We think that this option may be useful to include
in the official emacs.
Please have a look at the attached patch and let us know what you think.

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