Import xz 5.2.2 (as of svn r86089)

doc/man/txt/xzdiff.txt

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+XZDIFF(1)                          XZ Utils                          XZDIFF(1)
+
+
+
+NAME
+       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files
+
+SYNOPSIS
+       xzcmp [cmp_options] file1 [file2]
+       xzdiff [diff_options] file1 [file2]
+       lzcmp [cmp_options] file1 [file2]
+       lzdiff [diff_options] file1 [file2]
+
+DESCRIPTION
+       xzcmp  and  xzdiff  invoke  cmp(1)  or diff(1) on files compressed with
+       xz(1), lzma(1), gzip(1), bzip2(1), or lzop(1).  All  options  specified
+       are  passed  directly to cmp(1) or diff(1).  If only one file is speci-
+       fied, then the files compared are file1 (which must have a suffix of  a
+       supported compression format) and file1 from which the compression for-
+       mat suffix has been stripped.  If two files are  specified,  then  they
+       are  uncompressed  if necessary and fed to cmp(1) or diff(1).  The exit
+       status from cmp(1) or diff(1) is preserved.
+
+       The names lzcmp and lzdiff are provided for backward compatibility with
+       LZMA Utils.
+
+SEE ALSO
+       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), lzop(1), zdiff(1)
+
+BUGS
+       Messages  from  the cmp(1) or diff(1) programs refer to temporary file-
+       names instead of those specified.
+
+
+
+Tukaani                           2011-03-19                         XZDIFF(1)