+int pat_charfrom(Tcl_Interp *ip, Tcl_Obj *obj, int *val,
+ const char *opts, const char *what) {
+ *val= enum1_lookup_cached_func(ip,obj,opts,what);
+ if (*val==-1) return TCL_ERROR;
+ return TCL_OK;
+}
+
+int pat_int(Tcl_Interp *ip, Tcl_Obj *obj, int *val) {
+ return Tcl_GetIntFromObj(ip, obj, val);
+}
+
+int pat_long(Tcl_Interp *ip, Tcl_Obj *obj, long *val) {
+ return Tcl_GetLongFromObj(ip, obj, val);
+}
+
+int pat_string(Tcl_Interp *ip, Tcl_Obj *obj, const char **val) {
+ *val= Tcl_GetString(obj);
+ return TCL_OK;
+}
+
+int pat_hbv(Tcl_Interp *ip, Tcl_Obj *var, HBytes_Var *agg) {
+ int rc;
+ Tcl_Obj *val;
+
+ agg->var= var;
+
+ val= Tcl_ObjGetVar2(ip,var,0,TCL_LEAVE_ERR_MSG);
+ if (!val) return TCL_ERROR;
+
+ rc= Tcl_ConvertToType(ip,val,&hbytes_type);
+ if (rc) return rc;
+
+ if (Tcl_IsShared(val)) {
+ val= Tcl_DuplicateObj(val);
+ agg->copied= 1;
+ }
+ Tcl_InvalidateStringRep(val);
+ agg->obj= val;
+
+ agg->hb= OBJ_HBYTES(val);
+ return TCL_OK;
+}
+
+void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg) {
+ Tcl_Obj *ro;