When did Change Log become a single word?

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I know it gets run together as `CHANGELOG.md` to match `README.md`. That doesn't make it a word. Does it? If we can change `master` branch to `main`, surely we can use `CHANGE_LOG` AND `READ_ME`?

I'm curious which dictionaries treat it as a single word? As of 2022-06-15, it's not in Websters: https://www.merriam-webster.com/dictionary/changelog

Not in Dictionary.com: https://www.dictionary.com/misspelling?term=changelog

Not in the Cambridge dictionary: https://dictionary.cambridge.org/us/spellcheck/english/?q=changelog

Not in the Britannica dictionary: https://www.britannica.com/dictionary/eb/spelling/changelog

Not in the MacMillan dictionary: https://www.macmillandictionary.com/us/spellcheck/american/?q=changelog

Change Log made it to the OED as a two-word subentry in 2017: https://public.oed.com/updates/new-words-list-june-2017/

A Change Log is a thing, but Changelog is not officially an English word... yet. It probably will be, but should Wikipedia be leading this trend, or following it?--GlenPeterson (talk) 20:00, 15 June 2022 (UTC)Reply

It is the policy of Wikipedia to go with reliable sources Wikipedia:Reliable_sources. When it comes to the English language, there is no more reliable source than the Oxford English Dictionary, OED, as you pointed out has this as change log. In fact, the article on English language here uses the OED as a source for Vocabulary. Based on this, I agree that this article should be changed to change log. In accordance with Wikipedia:Be bold, I recommend you change the name of this article to change log. Fanra (talk) 19:52, 8 July 2022 (UTC)Reply
Because the page "change log" redirects to "changelog," I added a "(also spelled change log)". The only reference I could get was some law dictionary because the oxford site was paywalled and acting up. SPA5CE! talk about it 23:19, 7 November 2023 (UTC)Reply