[issue36595] IDLE: Add search to textview.ViewWindow

[Zackery Spytz]

Change by Zackery Spytz <zspytz at gmail.com>:


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keywords: +patch
pull_requests: +17086
stage: test needed -> patch review
pull_request: https://github.com/python/cpython/pull/17614

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<https://bugs.python.org/issue36595>
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