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2 The word difference finder

There are actually two programs for comparing files on a word per word basis. wdiff is a front-end to diff as found in the GNU diffutils package. It is quite mature. Its planned successor, wdiff2, is a front end to mdiff, and as experimental as mdiff itself. See Experimental.

A word is anything between whitespace. This is useful for comparing two texts in which a few words have been changed and for which paragraphs have been refilled.