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Karl Heuer authored
(Z_ADDR, BUF_GPT_ADDR, BUF_Z_ADDR): New macros. (struct buffer): New members `category_table', `direction_reserved', and `enable-multibyte-characters'. (POS_ADDR): New macro used at all places instead of &FETCH_CHAR. (FETCH_BYTE): New macro used at any places to check the argument against an ASCII character. (FETCH_MULTIBYTE_CHAR): New macro used at any places to get a character code of the argument when it is known to be a multibyte character. (_fetch_multibyte_char_p, _fetch_multibyte_char_len): New variables. (FETCH_CHAR): Use macros FETCH_MULTIBYTE_CHAR and FETCH_BYTE.
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