Remove the unneeded `require' in that example.
(cherry picked from commit 7bff0e888d
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@ -239,8 +239,6 @@ before version 5.2.
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@racketmod[
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s-exp framework/keybinding-lang
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(require drracket/tool-lib)
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(define-syntax-rule (frame-key key command)
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(keybinding
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(format "~a:~a"
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