diff --git a/libisoburn/trunk/xorriso/parse_exec.c b/libisoburn/trunk/xorriso/parse_exec.c
index 78c70a32..57a96279 100644
--- a/libisoburn/trunk/xorriso/parse_exec.c
+++ b/libisoburn/trunk/xorriso/parse_exec.c
@@ -581,6 +581,7 @@ return:
 */
 {
  int ret, was_dashed, end_ret, num1, num2, cmd_data_size= 2 * SfileadrL;
+ int mem_idx;
  char *cmd, *original_cmd, *cmd_data= NULL, *arg1, *arg2;
  
  Xorriso_alloc_meM(cmd_data, char, cmd_data_size);
@@ -1411,9 +1412,10 @@ unknown_option:;
    if(xorriso->add_plainly<=0)
      goto unknown_option;
 add_plain_argument:;
+   mem_idx= *idx;
    (*idx)--;
    ret= Xorriso_option_add(xorriso, (*idx)+1, argv, idx, 0);
-   (*idx)++;
+   (*idx)= mem_idx;
 
  }
 
@@ -1561,14 +1563,17 @@ int Xorriso_prescan_args(struct XorrisO *xorriso, int argc, char **argv,
 */
 {
  int i, ret, was_dashed, num2, arg_count;
+ int advice, mem_add_plainly, error_seen= 0;
  int was_report_about= 0, was_abort_on= 0, was_return_with= 0;
  int was_signal_handling= 0, was_scsi_log= 0, cmd_data_size= 5 * SfileadrL;
  char *cmd, *original_cmd, *cmd_data= NULL, *arg1, *arg2;
  char mem_list_delimiter[81];
 
+ strcpy(mem_list_delimiter, xorriso->list_delimiter);
+ mem_add_plainly= xorriso->add_plainly;
+
  Xorriso_alloc_meM(cmd_data, char, cmd_data_size);
 
- strcpy(mem_list_delimiter, xorriso->list_delimiter);
  for(i=1+(flag&1);i<argc;i++) {
    original_cmd= cmd= argv[i];
    was_dashed= 0;
@@ -1606,7 +1611,7 @@ int Xorriso_prescan_args(struct XorrisO *xorriso, int argc, char **argv,
    } else if(i==1 && strcmp(cmd,"no_rc")==0) {
      ret= Xorriso_option_no_rc(xorriso, 0);
      if(ret<=0)
-       goto ex;
+       error_seen= 1;
    } else if(xorriso->argument_emulation >= 1 &&
              xorriso->argument_emulation <= 2) {
      {ret= 1; goto ex;}
@@ -1659,8 +1664,17 @@ protect_stdout:;
      i++;
      ret= Xorriso_option_list_delimiter(xorriso, arg1, 0);
      if(ret <= 0)
-       goto ex;
+       error_seen= 1;
 
+   } else if(strcmp(cmd, "add_plainly") == 0) {
+     i++;
+     ret= Xorriso_option_add_plainly(xorriso, arg1, 0);
+     if(ret <= 0)
+       error_seen= 1;
+     if(xorriso->add_plainly == 3) {
+       /* All further arguments count as pathspecs */
+       {ret= 1; goto ex;}
+     }
    } else if(strcmp(cmd, "scsi_log") == 0 && was_dashed == 1) {
      i++;
      if(!was_scsi_log)
@@ -1674,15 +1688,28 @@ protect_stdout:;
      was_signal_handling= 1;
 
    } else {
-     ret= Xorriso_count_args(xorriso, argc-i, argv+i, &arg_count, 1);
-     if(ret==1)
+     ret= Xorriso_count_args(xorriso, argc - i, argv + i, &arg_count, 1);
+     if(ret == 1) {
        i+= arg_count;
+     } else if((was_dashed && xorriso->add_plainly <= 1) ||
+               xorriso->add_plainly <= 0) {
+       sprintf(xorriso->info_text, "Not a known option:  '%s'\n",
+               original_cmd);
+       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+       error_seen= 1;
+     }
    }
  }
  ret= 1;
 ex:;
  strcpy(xorriso->list_delimiter, mem_list_delimiter);
+ xorriso->add_plainly= mem_add_plainly;
  Xorriso_free_meM(cmd_data);
+ if(error_seen && ret > 0) {
+   advice= Xorriso_eval_problem_status(xorriso, 0, 0);
+   if(advice < 0)
+     ret= -1;
+ }
  return(ret);
 }
 
diff --git a/libisoburn/trunk/xorriso/xorriso.h b/libisoburn/trunk/xorriso/xorriso.h
index af771288..5da50198 100644
--- a/libisoburn/trunk/xorriso/xorriso.h
+++ b/libisoburn/trunk/xorriso/xorriso.h
@@ -240,8 +240,9 @@ int Xorriso_destroy(struct XorrisO **xorriso, int flag);
      -prog_help , -help , -no_rc
    Some get examined for the need to redirect stdout messages
      -dev , -outdev , -indev , -as 
-   Command -list_delimiter gets into effect during this call. But the
-   setting at begin of the call gets restored before the call returns.
+   Commands -list_delimiter and -add_plainly get into effect during this
+   call. But their setting at begin of the call gets restored before the
+   call returns.
    @param xorriso The context object in which to perform the commands.
    @param argc    Number of arguments.
    @param argv    The arguments. argv[0] contains the program name.
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 4ef7590c..de4a2a56 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2011.05.16.133231"
+#define Xorriso_timestamP "2011.05.16.134341"