Added new action "compare" to -find

libisoburn/trunk/xorriso/xorriso.1

@@ -140,7 +140,7 @@ useful to store intermediate states and to continue with image manipulations.
 .B Media types and states:
 There are two families of media in the MMC standard:
 .br
-\fBMulti-session\fR media are CD-R, CD-RW, DVD-R, DVD+R, and
+\fBMulti-session\fR media are CD-R, CD-RW, DVD-R, DVD+R, DVD+R/DL, and
 unformatted DVD-RW. These media provide a table of content which
 describes their existing sessions.
 .br
@@ -694,6 +694,13 @@ E.g.:
 .br
   -find / -exec lsdl
 .br
+"compare" performs command -compare with the found file address as iso_rr_path
+and the corresponding file address below its argument disk_path_start. For this
+the iso_rr_path of the -find command gets replaced by the disk_path_start.
+E.g.:
+.br
+  -find / -exec compare /home/thomas
+.br
 "find" performs another run of -find on the matching file address. It accepts
 the same params as -find, except iso_rr_path.
 E.g.:
@@ -1251,11 +1258,13 @@ always perform action "echo".
 .TP
 \fB\-compare\fR disk_path iso_rr_path
 Compare attributes and eventual data file content of a fileobject in the
-local filesystem with a file object in the ISO image. That iso_rr_path may
-well point to a image file object which is not yet committed, i.e. of which
+local filesystem with a file object in the ISO image. The iso_rr_path may
+well point to an image file object which is not yet committed, i.e. of which
 the data content still resides in the local filesystem. Such data content is
 prone to externally caused changes.
 .br
+If iso_rr_path is empty then disk_path is used as path in the ISO image too.
+.br
 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.