Fix range(value;stream) (fix #886)

builtin.c

@@ -1339,9 +1339,15 @@ static block bind_bytecoded_builtins(block b) {
   {
     // Note that we can now define `range` as a jq-coded function
     block rangevar = gen_op_var_fresh(STOREV, "rangevar");
-    block init = BLOCK(gen_op_simple(DUP), gen_call("start", gen_noop()), rangevar);
-    block range = BLOCK(init,
+    block rangestart = gen_op_var_fresh(STOREV, "rangestart");
+    block range = BLOCK(gen_op_simple(DUP),
+                        gen_call("start", gen_noop()),
+                        rangestart,
                         gen_call("end", gen_noop()),
+                        gen_op_simple(DUP),
+                        gen_op_bound(LOADV, rangestart),
+                        // Reset rangevar for every value generated by "end"
+                        rangevar,
                         gen_op_bound(RANGE, rangevar));
     builtins = BLOCK(builtins, gen_function("range",
                                             BLOCK(gen_param("start"), gen_param("end")),