set_char_table_purpose  253 src/casetab.c    set_char_table_purpose (down, Qcase_table);
set_char_table_purpose  134 src/chartab.c    set_char_table_purpose (vector, purpose);
set_char_table_purpose  195 src/chartab.c    set_char_table_purpose (copy, XCHAR_TABLE (table)->purpose);