- int final_char;
-
- CHECK_NUMBER (dimension);
- CHECK_NUMBER (chars);
- if (XINT (dimension) != 1 && XINT (dimension) != 2 && XINT (dimension) != 3)
- args_out_of_range_3 (dimension, make_number (1), make_number (3));
- if (XINT (chars) != 94 && XINT (chars) != 96)
- args_out_of_range_3 (chars, make_number (94), make_number (96));
- for (final_char = '0'; final_char <= '?'; final_char++)
- if (ISO_CHARSET_TABLE (XINT (dimension), XINT (chars), final_char) < 0)
- break;
- return (final_char <= '?' ? make_number (final_char) : Qnil);
-}
-
-static void
-check_iso_charset_parameter (Lisp_Object dimension, Lisp_Object chars, Lisp_Object final_char)
-{
- CHECK_NATNUM (dimension);
- CHECK_NATNUM (chars);
- CHECK_CHARACTER (final_char);
-
- if (XINT (dimension) > 3)
- error ("Invalid DIMENSION %"pI"d, it should be 1, 2, or 3",
- XINT (dimension));
- if (XINT (chars) != 94 && XINT (chars) != 96)
- error ("Invalid CHARS %"pI"d, it should be 94 or 96", XINT (chars));
- if (XINT (final_char) < '0' || XINT (final_char) > '~')
- error ("Invalid FINAL-CHAR %c, it should be `0'..`~'",
- (int)XINT (final_char));
+ bool chars_flag = check_iso_charset_parameter (dimension, chars,
+ make_number ('0'));
+ for (int final_char = '0'; final_char <= '?'; final_char++)
+ if (ISO_CHARSET_TABLE (XINT (dimension), chars_flag, final_char) < 0)
+ return make_number (final_char);
+ return Qnil;