- fixed error handling

pardef.c

@@ -27,6 +27,7 @@ Markus Zolliker, March 2005
 #define BADLOG -6
 #define UNKPAR -7
 #define PARUNDEF -8
+#define ERRCMD -9
 
 typedef enum { NO_OP, FMT_OP, SET_OP, GET_OP, INIT_OP } ParOp;
 
@@ -1390,8 +1391,13 @@ int ParCmd(ParCommand cmd, void *userarg)
     ctx->action = PAR_NOOP;
     return 0;
   }
-  ctx->returnValue = 1;
-  return cmd(ctx->obj, userarg, ctx->argc, ctx->argv);
+  iret = cmd(ctx->obj, userarg, ctx->argc, ctx->argv);
+  if (iret == 0) {
+    ctx->returnValue = ERRCMD;
+    return -1;
+  }
+  ctx->returnValue = iret;
+  return 1;
 }
 
 /*----------------------------------------------------------------------------*/