chlen            1083 src/string.c       int chlen = SCM_CHAR_NBYTES(ch);
chlen            1124 src/string.c                                    prelen + (end-start)*chlen + postlen + 1);
chlen            1129 src/string.c           p += chlen;
chlen            1135 src/string.c                                 prelen + (end-start)*chlen + postlen,