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[3.15] gh-157672: Keep Python's signal handlers when Tk is initialized on macOS (GH-157673) - #157987
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… on macOS (pythonGH-157673) Tk on macOS replaces the SIGINT, SIGHUP and SIGTERM handlers with its own, which exits the process, so Ctrl-C terminated a tkinter program instead of raising KeyboardInterrupt. Save the handlers installed by Python before Tk_Init() and restore them after it. This affects Tk 8.6.11 to 8.6.18 and 9.0 to 9.0.4. Tk itself is fixed in 8.6.19 and 9.0.5. (cherry picked from commit 4532b36)
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Tk on macOS replaces the SIGINT, SIGHUP and SIGTERM handlers with its own, which exits the process, so Ctrl-C terminated a tkinter program instead of raising KeyboardInterrupt. Save the handlers installed by Python before
Tk_Init()and restore them after it.This affects Tk 8.6.11 to 8.6.18 and 9.0 to 9.0.4. Tk itself is fixed in 8.6.19 and 9.0.5.
(cherry picked from commit 4532b36)