CTXSYS.DEFAULT_EXTRACT_LEXER
The CTXSYS.DEFAULT_EXTRACT_LEXER preference uses AUTO_LEXER and includes all Oracle-supplied features (rules, dictionary, etc.). CTXSYS.DEFAULT_EXTRACT_LEXER uses AUTO_LEXER with the following options:
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alternate_spelling is NONE
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base_letter is NO
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mixed_case is YES
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<> printjoin is ‘-*’ <>