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LEEJO CHENGANG IOANR BCDE DOY

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John SJ Anderson
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Unicode Support

This is a macro that evaluates to a string constant of the UTF-8 bytes that define the Unicode BYTE ORDER MARK (U+FEFF) for the platform that perl is compiled on. This allows code to use a mnemonic for this character that works on both ASCII and EBCDIC platforms. sizeof(BOM_UTF8) - 1 can be used to get its length in bytes.

This is a macro that evaluates to a string constant of the UTF-8 bytes that define the Unicode REPLACEMENT CHARACTER (U+FFFD) for the platform that perl is compiled on. This allows code to use a mnemonic for this character that works on both ASCII and EBCDIC platforms. sizeof(REPLACEMENT_CHARACTER_UTF8) - 1 can be used to get its length in bytes.