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1bfe555cd334feccdf55a0fd2891f743b2ffc7a0
As documented in libutempter: "During execution of the privileged process spawned by these functions, SIGCHLD signal handler will be temporarily set to the default action." Thus in case a SIGCHLD has been lost, we send a SIGCHLD to oneself in order to avoid zombies: https://savannah.gnu.org/bugs/?25089
Description
Screen is a full-screen window manager that multiplexes a physical
terminal between several processes, typically interactive shells
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