Yuki Kimoto - SPVM AuthorThe only correct approach for UTF-8 strings in Perl.
A string is treated as byte sequences without any flags.
Separate functions that handle UTF-8 from functions that handle byte sequences. The following is an example of the substr function.
substr_bytes
substr_utf8
The use utf8_func pragma replaces substr with substr_utf8.
The use bytes_func pragma replaces substr with substr_bytes.
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