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    subprocess: Add a SrtCompletedSubprocess object to represent the result · 269dd889
    Simon McVittie authored
    
    
    This is loosely based on the API of Python's
    `subprocess.CompletedProcess`. It intentionally isn't exposed to code
    outside its translation unit until it has finished running.
    
    This takes over the functionality of _srt_process_timeout_wait_status(),
    which is used automatically when needed for timeout(1), and can also be
    requested explicitly with SRT_HELPER_FLAGS_SHELL_EXIT_STATUS if using
    a wrapper that encodes exit status in the same way such as sh(1) or
    env(1).
    
    No functional change intended. The formatting of debug messages will be
    a little different, because I've used SRT_SUBPROCESS_OUTPUT_CAPTURE_DEBUG
    instead of open-coding its equivalent.
    
    Signed-off-by: default avatarSimon McVittie <smcv@collabora.com>
    269dd889