diff --git a/doc/todo/add_maxextensionlength_to_git-annex-config.mdwn b/doc/todo/add_maxextensionlength_to_git-annex-config.mdwn
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index 0000000000..5aad71840a
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+++ b/doc/todo/add_maxextensionlength_to_git-annex-config.mdwn
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+To the list of config settings applied to all clones of a repo, add `annex.maxextensionlength`.