New option -compare_r, new -findx -exec in_iso, -exec no_in_iso

xorriso/xorriso.1

@@ -1253,8 +1253,20 @@ Similar to shell command du -sk.
 Like -find but operating on local filesystem and not on the ISO image.
 This is subject to the settings of -follow.
 .br
--findx accepts the -exec actions as does -find. But it will
-always perform action "echo".
+-findx accepts the -exec actions as does -find. But it will except two
+other actions it will allways perform action "echo".
+.br
+"in_iso" iso_rr_path_start reports the path if its counterpart exist in
+the ISO image. For this the disk_path of the -find command gets replaced
+by iso_rr_path_start.  E.g.:
+.br
+  -find /home -exec in_iso /
+.br
+"not_in_iso" iso_rr_path_start reports the path if its counterpart does
+not exist in the ISO image. The format is the same as with command -compare.
+E.g.
+.br
+  -find /home -exec not_in_iso /
 .TP
 \fB\-compare\fR disk_path iso_rr_path
 Compare attributes and eventual data file content of a fileobject in the
@@ -1269,6 +1281,11 @@ Differing attributes are reported in detail, differing content is summarized.
 Both to the result channel. In case of no differences no result lines are
 emitted.
 .TP
+\fB\-compare_r\fR disk_path iso_rr_path
+Like -compare but working recursively. I.e. all file objects below both
+addresses get compared whether they have counterparts below the other address
+and whether both counterparts match.
+.TP
 .B Command compatibility emulations:
 .PP
 Writing of ISO 9660 on CD is traditionally done by program mkisofs