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Commit 0c603a6

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timhoffmtimhoffm
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Close all plot windows of a blocking show() on Ctrl+C
Addresses the Qt part of #23385. It appears that `qapp.quit()` does not automatically close the windows of the app. We therefore do it explicitly. A unit test for this would be quite complex. Test this by hand by Ctrl+C in an interactive shell.
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‎lib/matplotlib/backends/qt_compat.py

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@@ -215,6 +215,8 @@ def _may_clear_sock(*args):
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def handle(*args):
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nonlocal handler_args
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handler_args = args
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for window in qapp.allWindows():
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window.close()
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qapp.quit()
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signal.signal(signal.SIGINT, handle)

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