Package: xz-utils
Version: 4.999.8beta-1
$ { echo a; echo b; } > 1
$ echo a > 2
$ xz 1
$ xzdiff -u 1.xz 2
--- - 2009-08-08 13:03:40.906511983 -0500
+++ 2 2009-08-08 13:00:10.000000000 -0500
@@ -1,2 +1 @@
a
-b
$ xzdiff 1.xz 2.xz
$ echo $?
2
$ unxz 1.xz
$ xzdiff 1 2.xz
--- 1 2009-08-08 13:00:08.000000000 -0500
+++ - 2009-08-08 13:08:54.473876036 -0500
@@ -1,2 +1 @@
a
-b
It looks like xzdiff uses standard input for the compressed file, but
there's only one standard input. Better to use named pipes or
something.
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