Class Popen

module/plugins/internal/misc.py:1155–1186

This supersedes Popen and corrects a bug in cPython implementation

    class Popen(subprocess.Popen):
        """
        This supersedes Popen and corrects a bug in cPython implementation
        """
        def _execute_child(self, args, executable, preexec_fn, close_fds,
                           cwd, env, universal_newlines,
                           startupinfo, creationflags, shell, to_close,
                           p2cread, p2cwrite,
                           c2pread, c2pwrite,
                           errread, errwrite):

            if not isinstance(args, subprocess.types.StringTypes):
                args = subprocess.list2cmdline(args)

            if startupinfo is None:
                startupinfo = subprocess.STARTUPINFO()
            if shell:
                startupinfo.dwFlags |= _subprocess.STARTF_USESHOWWINDOW
                startupinfo.wShowWindow = _subprocess.SW_HIDE
                comspec = os.environ.get("COMSPEC", u"cmd.exe")
                args = u'%s /c "%s"' % (comspec, args)
                if _subprocess.GetVersion() >= 0x80000000 or os.path.basename(comspec).lower() == "command.com":
                    w9xpopen = self._find_w9xpopen()
                    args = u'"%s" %s' % (w9xpopen, args)
                    creationflags |= _subprocess.CREATE_NEW_CONSOLE

            super(Popen, self)._execute_child(args, executable, preexec_fn, close_fds,
                                              cwd, env, universal_newlines,
                                              startupinfo, creationflags, False, to_close,
                                              p2cread, p2cwrite,
                                              c2pread, c2pwrite,
                                              errread, errwrite)

    _subprocess.CreateProcess = CreateProcess