Details about "word-diff" in hg 4.7?

Thu Aug 2 14:02:09 UTC 2018

https://www.mercurial-scm.org/wiki/Release4.7 shows this:

- 'word-diff' option is now officially supported, and enabled by
tweakdefaults.

I only found this reference in the wiki
<https://www.mercurial-scm.org/wiki/WordDiff>, from 2015 and probably
unrelated.

Details?. How to enable it?.

-- 
JesÃºs Cea AviÃ³n                         _/_/      _/_/_/        _/_/_/
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