PhutilExecPassthruClassExecute a command which takes over stdin, stdout and stderr, similar to
`passthru()`, but which preserves TTY semantics, escapes arguments, and is
traceable.PhutilExecPassthruClassExecute a command which takes over stdin, stdout and stderr, similar to
`passthru()`, but which preserves TTY semantics, escapes arguments, and is
traceable.