Bug in diffutils < 2.8.6

[Thilo Fischer]

Hello.

Not sure if this is really a bug. If it is, it would be 6 years old -- someone
else should have found it in the meantime. But as I could not find anything
about it on the web, I think writing this Email won't hurt.

I can reproduce the (putative) bug as follows:
$ mkdir 1
$ mkdir 2
$ echo test > 1/test.txt
$ echo test > 2/test.TXT
$ diff --ignore-file-name-case 1 2

Using RHEL 5.2 and included diffutils 2.8.1, as well as self-compiled
diffutils 2.8, 2.8.1 and 2.8.4, output is
---
Only in 1: test.txt
Only in 2: test.TXT
---

Using diffutils 2.8.6 or 2.8.7, output is empty, as expected.

So if it is really a bug that was fixed along the way 4 years ago (when
version 2.8.6 was released), maybe a newer version of diffutils should become
officially stable some day...

YOS,
Thilo