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Merge branch 'es/hooks-and-local-env' into maint-2.39
Doc update for environment variables set when hooks are invoked. * es/hooks-and-local-env: githooks: discuss Git operations in foreign repositories
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@ -27,6 +27,18 @@ repository. An exception are hooks triggered during a push ('pre-receive',
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'update', 'post-receive', 'post-update', 'push-to-checkout') which are always
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executed in $GIT_DIR.
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Environment variables, such as `GIT_DIR`, `GIT_WORK_TREE`, etc., are exported
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so that Git commands run by the hook can correctly locate the repository. If
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your hook needs to invoke Git commands in a foreign repository or in a
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different working tree of the same repository, then it should clear these
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environment variables so they do not interfere with Git operations at the
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foreign location. For example:
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------------
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local_desc=$(git describe)
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foreign_desc=$(unset $(git rev-parse --local-env-vars); git -C ../foreign-repo describe)
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------------
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Hooks can get their arguments via the environment, command-line
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arguments, and stdin. See the documentation for each hook below for
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details.
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