Eli Barzilay <eli@xxxxxxxxxxxx> writes:
>> This matches your results. That the order makes a difference is a bit
>> odd. Both are valid diffs of the inputs and neither one changes blank
>> lines, though, so it doesn't look like a bug.
>
> How is it valid?
Just this part. Any patch output that correctly explains how the
preimage text changed to the postimage text is a "valid" diff, and
that is how René used the word. There are multiple "valid" diff
to bring the preimage to the postimage:
(preimage) (postimage)
aaa aaa
bbb bbb
ccc
ccc
In an extreme case, this diff is even valid.
@@ -1,4 +1,4 @@
-aaa
-bbb
-ccc
-
+aaa
+bbb
+
+ccc
It's just that it is not as _useful_ as other valid diff that
explains how the preimage changed to the postimage.
HTH.
