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This directory holds configuration files which allow MySQL to work with
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different character sets. It contains:
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Each conf file contains four tables which describe character types,
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lower- and upper-case equivalencies and sorting orders for the
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character values in the set.
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The Index file lists all of the available charset configurations.
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Each charset is paired with a number. The number is stored
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IN THE DATABASE TABLE FILES and must not be changed. Always
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add new character sets to the end of the list, so that the
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numbers of the other character sets will not be changed.
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Compiled in or configuration file?
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When should a character set be compiled in to MySQL's string library
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(libmystrings), and when should it be placed in a configuration
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If the character set requires the strcoll functions or is a
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multi-byte character set, it MUST be compiled in to the string
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library. If it does not require these functions, it should be
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placed in a configuration file.
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If the character set uses any one of the strcoll functions, it
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must define all of them. Likewise, if the set uses one of the
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multi-byte functions, it must define them all. See the manual for
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more information on how to add a complex character set to MySQL.
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Syntax of configuration files
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The syntax is very simple. Comments start with a '#' character and
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proceed to the end of the line. Words are separated by arbitrary
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amounts of whitespace.
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For the character set configuration files, every word must be a
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number in hexadecimal format. The ctype array takes up the first
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257 words; the to_lower, to_upper and sort_order arrays take up 256
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words each after that.
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drizzled/share/charsets/README
