Fixed #24500 -- Fixed makemessages encoding problems retrieving gettext version.

                    "gettext tools 0.15 or newer installed." % program)

def gettext_popen_wrapper(args, os_err_exc_type=CommandError):

def gettext_popen_wrapper(args, os_err_exc_type=CommandError, stdout_encoding="utf-8"):

    """

    Makes sure text obtained from stdout of gettext utilities is Unicode.

    """

    stdout, stderr, status_code = popen_wrapper(args, os_err_exc_type=os_err_exc_type)

    if os.name == 'nt' and six.PY3:

        # This looks weird because it's undoing what subprocess.Popen(universal_newlines=True).communicate()

        # does when capturing PO files contents from stdout of gettext command line programs. See ticket #23271

        # for details. No need to do anything on Python 2 because it's already a UTF-8-encoded byte-string there

        stdout = stdout.encode(locale.getpreferredencoding(False)).decode('utf-8')

    preferred_encoding = locale.getpreferredencoding(False)

    if os.name == 'nt' and six.PY3 and stdout_encoding != preferred_encoding:

        # This looks weird because it's undoing what

        # subprocess.Popen(universal_newlines=True).communicate()

        # does when capturing PO files contents from stdout of gettext command

        # line programs. No need to do anything on Python 2 because it's

        # already a byte-string there (#23271).

        stdout = stdout.encode(preferred_encoding).decode(stdout_encoding)

    if six.PY2:

        stdout = stdout.decode('utf-8')

        stdout = stdout.decode(stdout_encoding)

    return stdout, stderr, status_code

    @cached_property

    def gettext_version(self):

        out, err, status = gettext_popen_wrapper(['xgettext', '--version'])

        # Gettext tools will output system-encoded bytestrings instead of UTF-8,

        # when looking up the version. It's especially a problem on Windows.

        out, err, status = gettext_popen_wrapper(

            ['xgettext', '--version'],

            stdout_encoding=locale.getpreferredencoding(False),

        )

        m = re.search(r'(\d+)\.(\d+)\.?(\d+)?', out)

        if m:

            return tuple(int(d) for d in m.groups() if d is not None)

        for f in file_list:

            try:

                f.process(self, self.domain)

            except UnicodeDecodeError:

                self.stdout.write("UnicodeDecodeError: skipped file %s in %s" % (f.file, f.dirpath))

            except UnicodeDecodeError as e:

                self.stdout.write(

                    "UnicodeDecodeError: skipped file %s in %s (reason: %s)" % (

                        f.file,

                        f.dirpath,

                        e,

                    )

                )

        potfiles = []

        for path in self.locale_paths: