Hi, I have an application and run it under tmux. The application sets STDIN_FILENO, STDOUT_FILENO and STDERR_FILENO to nonblocking using fcntl calls. The application internally loads the tmux configuration file using system command (tmux source-file xxx). Soon after this is executed inside from my application, all the STDIN/STDOUT/STDERR fds sets back to blocking state. Not sure what is the problem here. Why tmux always sets the fds to blocking state. Is there a way to always set to non-blocking. Any help is highly appreciated.
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