fetch_string_char_as_multibyte_advance  410 src/fns.c            int c1 = fetch_string_char_as_multibyte_advance (str1, &i1, &i1_byte);
fetch_string_char_as_multibyte_advance  411 src/fns.c            int c2 = fetch_string_char_as_multibyte_advance (str2, &i2, &i2_byte);
fetch_string_char_as_multibyte_advance 2472 src/search.c   	    c = fetch_string_char_as_multibyte_advance (string,