configure --compat should enable expr with multiple args

Not disable it.

Signed-off-by: Steve Bennett <[email protected]>

Author: msteveb

jim.c

@@ -14110,20 +14110,20 @@ static int Jim_UplevelCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *
 /* [expr] */
 static int Jim_ExprCoreCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
-    int retcode;
-
-    if (argc == 2) {
-        retcode = Jim_EvalExpression(interp, argv[1]);
-    }
-    else {
+#ifdef JIM_COMPAT
+    if (argc > 2) {
+        int retcode;
         Jim_Obj *objPtr;
 
         objPtr = Jim_ConcatObj(interp, argc - 1, argv + 1);
         Jim_IncrRefCount(objPtr);
         retcode = Jim_EvalExpression(interp, objPtr);
         Jim_DecrRefCount(interp, objPtr);
+
+        return retcode;
     }
-    return retcode;
+#endif
+    return Jim_EvalExpression(interp, argv[1]);
 }
 
 static int JimBreakContinueHelper(Jim_Interp *interp, int argc, Jim_Obj *const *argv, int retcode)
@@ -16696,7 +16696,7 @@ static const struct jim_core_cmd_def_t {
     {"eval", Jim_EvalCoreCommand, 1, -1, "arg ?arg ...?" },
     {"exists", Jim_ExistsCoreCommand, 1, 2, "?-command|-proc|-alias|-channel|-var? name" },
     {"exit", Jim_ExitCoreCommand, 0, 1, "?exitCode?" },
-#ifndef JIM_COMPAT
+#ifdef JIM_COMPAT
     {"expr", Jim_ExprCoreCommand, 1, -1, "expression ?...?" },
 #else
     {"expr", Jim_ExprCoreCommand, 1, 1, "expression" },