Mercurial

Mercurial is an open-source distributed version control system created by Matt Mackall in 2005.

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Mercurial was released by Matt Mackall in 2005 and is written mainly in Python. Like Git, which appeared the same year, it is distributed, with every user cloning a repository's full history. Its command-line tool is named hg, after the chemical symbol for mercury.

Mercurial is free software distributed under the GNU GPL. It records history as a series of changesets and can be customized with extensions.

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Meta itself once overhauled Mercurial to cope with its own monorepo.


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