Wdiff
GNU wdiff
https://www.gnu.org/software/wdiff/
Front end to GNU diff.
Compares two files on a word per word basis, finding the word deleted or added from the first file to make the second. A word is defined as anything between whitespace. It works by creating two temporary files, one word per line, and the executes 'diff' on these fields. It collects the 'diff' output and uses it to produce a nicer display of word differences between the original files.
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