Squashed 'third_party/git/' content from commit cb71568594

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Documentation/config/user.txt

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+user.name::
+user.email::
+author.name::
+author.email::
+committer.name::
+committer.email::
+	The `user.name` and `user.email` variables determine what ends
+	up in the `author` and `committer` field of commit
+	objects.
+	If you need the `author` or `committer` to be different, the
+	`author.name`, `author.email`, `committer.name` or
+	`committer.email` variables can be set.
+	Also, all of these can be overridden by the `GIT_AUTHOR_NAME`,
+	`GIT_AUTHOR_EMAIL`, `GIT_COMMITTER_NAME`,
+	`GIT_COMMITTER_EMAIL` and `EMAIL` environment variables.
+	See linkgit:git-commit-tree[1] for more information.
+
+user.useConfigOnly::
+	Instruct Git to avoid trying to guess defaults for `user.email`
+	and `user.name`, and instead retrieve the values only from the
+	configuration. For example, if you have multiple email addresses
+	and would like to use a different one for each repository, then
+	with this configuration option set to `true` in the global config
+	along with a name, Git will prompt you to set up an email before
+	making new commits in a newly cloned repository.
+	Defaults to `false`.
+
+user.signingKey::
+	If linkgit:git-tag[1] or linkgit:git-commit[1] is not selecting the
+	key you want it to automatically when creating a signed tag or
+	commit, you can override the default selection with this variable.
+	This option is passed unchanged to gpg's --local-user parameter,
+	so you may specify a key using any method that gpg supports.