sym_aref         9818 string.c           rb_define_method(rb_cSymbol, "[]", sym_aref, -1);
sym_aref         9819 string.c           rb_define_method(rb_cSymbol, "slice", sym_aref, -1);
sym_aref           25 transcode.c    static VALUE sym_invalid, sym_undef, sym_replace, sym_fallback, sym_aref;
sym_aref         2259 transcode.c        return rb_funcall3(fallback, sym_aref, 1, &c);
sym_aref         2553 transcode.c    	    ? (rb_obj_is_proc(v) || rb_obj_is_method(v) || rb_respond_to(v, sym_aref))
sym_aref         4419 transcode.c        sym_aref = ID2SYM(rb_intern("[]"));