[2] GNU gettext - Bugs: bug #50357, xgettext doesn't recognise... [Savannah] (Copyright 2016 Free Software Foundation, Inc. Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.著, ) <https://savannah.gnu.org/bugs/?50357>
[3] PEP 263 -- Defining Python Source Code Encodings | Python.org () <https://www.python.org/dev/peps/pep-0263/>