diff --git a/libisoburn/trunk/xorriso/emulators.c b/libisoburn/trunk/xorriso/emulators.c
index fc1d6cb5..5328a549 100644
--- a/libisoburn/trunk/xorriso/emulators.c
+++ b/libisoburn/trunk/xorriso/emulators.c
@@ -494,6 +494,108 @@ ex:;
 }
 
 
+/* This function shall know all options of mkisofs, genisoimage, xorrisofs, ...
+   and the number of arguments which they expect and consume.
+*/
+int Xorriso_genisofs_count_args(struct XorrisO *xorriso, int argc, char **argv,
+                                int *count, int flag)
+{
+ int i;
+ char *cmd;
+
+ static char partial_options[][41]= {
+    "errctl=",
+    "isolinux_mbr=", "--modification-date=",
+    ""
+ };
+ static char arg0_options[][41]= {
+    "-allow-leading-dots", "-ldots", "-allow-lowercase", "-allow-multidot",
+    "-cache-inodes", "-no-cache-inodes", "-eltorito-alt-boot",
+    "-hard-disk-boot", "-no-emul-boot", "-no-boot", "-boot-info-table",
+    "-check-oldnames", "-d", "-D", "-dvd-video", "-f", "-gui", "-graft-points",
+    "-hide-joliet-trans-tbl", "-hide-rr-moved", "-J", "-joliet-long", "-l",
+    "-L", "-max-iso9660-filenames", "-N", "-nobak", "-no-bak",
+    "-no-limit-pathtables", "-force-rr", "-no-rr",
+    "-no-split-symlink-components", "-no-split-symlink-fields", "-pad",
+    "-no-pad", "-posix-H", "-posix-L", "-posix-P", "-print-size",
+    "-quiet", "-R", "-r", "-relaxed-filenames", "-rrip110", "-rrip112",
+    "-split-output", "-T", "-UDF", "-udf", "-udf-symlinks", "-no-udf-symlinks",
+    "-U", "-no-iso-translate", "-v", "-XA", "-xa", "-z",
+    "-hfs", "-no-hfs", "-apple", "-probe", "-no-desktop", "-mac-name",
+    "-part", "-icon-position", "-chrp-t", "-hfs-unlock", "--cap", "--netatalk",
+    "--double", "--ethershare", "--ushare", "--exchange", "--sgi", "--xinet",
+    "--macbin", "--single", "--dave", "--sfm", "--osx-double", "--osx-hfs",
+    "-debug", "-omit-period", "-disable-deep-relocation", "-joliet",
+    "-full-iso9660-filenames", "-follow-links", "-help",
+    "-transparent-compression",
+    "-omit-version-number", "-rational-rock", "-rock", "-translation-table",
+    "-untranslated-filenames", "-verbose", "-version", "-g", "-h",
+    "-no-mac-files", "-chrp-boot",
+    "--hardlinks", "--acl", "--xattr", "--md5", "--for_backup",
+    "--protective-msdos-label", "--boot-catalog-hide", "--no-emul-toc",
+    ""
+ };
+ static char arg1_options[][41]= {
+    "-abstract", "-A", "-appid", "-biblio", "-b", "-B", "-boot-load-seg",
+    "-boot-load-size", "-C", "-c", "-check-session", "-copyright",
+    "-dir-mode", "-file-mode", "-G", "-gid", "-hide", "-hide-list",
+    "-hidden", "-hidden-list", "-hide-joliet", "-hide-joliet-list",
+    "-hide-udf", "-hide-udf-list", "-input-charset", "-output-charset",
+    "-iso-level", "-jcharset", "-log-file", "-m", "-exclude-list", "-M",
+    "-dev", "-new-dir-mode", "-o", "-path-list", "-publisher", "-p", "-root",
+    "-old-root", "-s", "-sectype", "-sort", "-sparc-boot", "-sparc-label",
+    "-stream-media-size", "-stream-file-name", "-sunx86-boot", "-sunx86-label",
+    "-sysid", "-table-name", "-ucs-level", "-uid", "-V", "-volset",
+    "-volset-size", "-volset-seqno", "-x", "-P",
+    "-map", "-magic", "-hfs-creator", "-hfs-type", "-boot-hfs-file", "-auto",
+    "-cluster-size", "-hide-hfs", "-hide-hfs-list", "-hfs-volid",
+    "-root-info", "-prep-boot", "-input-hfs-charset", "-output-hfs-charset",
+    "-hfs-bless", "-hfs-parms", 
+    "-eltorito-boot", "-generic-boot", "-eltorito-catalog", "-cdrecord-params",
+    "-errctl", "-exclude", "-prev-session", "-output", "-use-fileversion",
+    "-volid", "-old-exclude",
+    "-alpha-boot", "-hppa-cmdline", "-hppa-kernel-32", "-hppa-kernel-64",
+    "-hppa-bootloader", "-hppa-ramdisk", "-mips-boot", "-mipsel-boot",
+    "-jigdo-jigdo", "-jigdo-template", "-jigdo-min-file-size",
+    "-jigdo-force-md5", "-jigdo-exclude", "-jigdo-map", "-md5-list",
+    "--stdio_sync", "--quoted_path_list", "--efi-boot", "--embedded-boot",
+    "-isohybrid-mbr",
+    ""
+ };
+ static char arg2_options[][41]= {
+    "--scdbackup_tag", "--sort-weight",
+    ""
+ };
+ static char final_options[][41]= {
+    "-find",
+    ""
+ };
+
+ cmd= argv[0];
+ *count= 0;
+ for(i=0; partial_options[i][0]!=0; i++)
+   if(strncmp(partial_options[i], cmd, strlen(partial_options[i]))==0)
+     return(1);
+ for(i=0; arg0_options[i][0]!=0; i++)
+   if(strcmp(arg0_options[i], cmd)==0)
+     return(1);
+ *count= 1;
+ for(i=0; arg1_options[i][0]!=0; i++)
+   if(strcmp(arg1_options[i], cmd)==0)
+     return(1);
+ *count= 2;
+ for(i=0; arg2_options[i][0]!=0; i++)
+   if(strcmp(arg2_options[i], cmd)==0)
+     return(1);
+ *count= argc - 1;
+ for(i=0; final_options[i][0]!=0; i++)
+   if(strcmp(final_options[i], cmd)==0)
+     return(1);
+ *count= 0;
+ return(0); 
+}
+
+
 /* @param flag bit0= do not report eventual ignore decision
 */
 int Xorriso_genisofs_ignore(struct XorrisO *xorriso, char *whom,
@@ -740,7 +842,7 @@ int Xorriso_genisofs(struct XorrisO *xorriso, char *whom,
  int ret, i, j, was_path= 0, was_other_option= 0, mem_graft_points, mem;
  int do_print_size= 0, fd, idx, iso_level= 0, no_emul_boot= 0;
  int option_b= 0, was_failure= 0, fret, lower_r= 0, zero= 0;
- int dir_mode= -1, file_mode= -1;
+ int dir_mode= -1, file_mode= -1, count;
  mode_t mode_and, mode_or;
  int with_boot_image= 0, with_cat_path= 0;
  int *weight_list= NULL, weight_count= 0;
@@ -907,7 +1009,9 @@ int Xorriso_genisofs(struct XorrisO *xorriso, char *whom,
      Xorriso_option_stdio_sync(xorriso, argv[i], 0);
    } else
      was_other_option= 1;
-
+     ret= Xorriso_genisofs_count_args(xorriso, argc - i, argv + i, &count, 0);
+     if(ret > 0)
+       i+= count; /* skip eventual arguments of known option */
  continue; /* regular bottom of loop */
 problem_handler_1:;
    was_failure= 1;
@@ -1092,7 +1196,8 @@ not_enough_args:;
      xorriso->do_disk_pattern= mem;
      if(ret<=0)
        goto problem_handler_2;
-   } else if(strcmp(argv[i], "-v")==0 || strcmp(argv[i], "-quiet")==0) {
+   } else if(strcmp(argv[i], "-v")==0 || strcmp(argv[i], "-verbose")==0 ||
+             strcmp(argv[i], "-quiet")==0) {
      /* was already handled in first argument scan */;
 
    } else if(strcmp(argv[i], "-iso-level")==0) {
@@ -1193,12 +1298,17 @@ not_enough_args:;
        goto problem_handler_2;
      file_mode= mode_or;
    } else if(argv[i][0]=='-' && argv[i][1]!=0) {
-     sprintf(xorriso->info_text, "-as %s: Unknown option %s",
-             whom, Text_shellsafe(argv[i], sfe, 0));
-     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+     ret= Xorriso_genisofs_count_args(xorriso, argc - i, argv + i, &count, 1);
+     if(ret > 0) {
+       sprintf(xorriso->info_text, "-as %s: Unsupported option %s",
+               whom, Text_shellsafe(argv[i], sfe, 0));
+       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+       i+= count;
+       goto problem_handler_2;
+     } else
+       goto is_pathspec_2;
    } else {
-     int zero= 0;
-
+is_pathspec_2:;
      /* implementing mkisofs tendency to map single-path pathspecs to / */
      if((!xorriso->allow_graft_points) || 
         Fileliste__target_source_limit(argv[i], '=', &ept, 0)<=0) {
@@ -1225,6 +1335,7 @@ not_enough_args:;
        add_pt= argv[i];
      mem_graft_points= xorriso->allow_graft_points;
      xorriso->allow_graft_points= 1;
+     zero= 0;
      ret= Xorriso_option_add(xorriso, 1, &add_pt, &zero, was_path<<1);
      xorriso->allow_graft_points= mem_graft_points;
      if(ret<=0)
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 3f5c0a0c..d0befc24 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2010.07.06.114503"
+#define Xorriso_timestamP "2010.07.08.155900"