- doc: /* Declare a charset of DIMENSION, CHARS, FINAL-CHAR is the same as CHARSET.
-CHARSET should be defined by `defined-charset' in advance. */)
- (dimension, chars, final_char, charset_symbol)
- Lisp_Object dimension, chars, final_char, charset_symbol;
+ doc: /* Declare an equivalent charset for ISO-2022 decoding.
+
+On decoding by an ISO-2022 base coding system, when a charset
+specified by DIMENSION, CHARS, and FINAL-CHAR is designated, behave as
+if CHARSET is designated instead. */)
+ (dimension, chars, final_char, charset)
+ Lisp_Object dimension, chars, final_char, charset;