For now UTF-16 and UTF-32 source encodings are not supported. There is a
comment in Parser/tokenizer.c:
/* Disable support for UTF-16 BOMs until a decision
is made whether this needs to be supported. */
Can we make a decision whether this support will be added in foreseeable
future (say in near 10 years), or no?
Removing commented out and related code will help to refactor the
tokenizer, and that can help to fix some existing bugs (e.g. issue14811,
issue18961, issue20115 and may be others). Current tokenizing code is
too tangled.
If the support of UTF-16 and UTF-32 is planned, I'll take this to
attention during refactoring. But in many places besides the tokenizer
the ASCII compatible encoding of source files is expected.
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