[Bug-tar] ‘gzip.at’ test is slightly too strict

[Ludovic Courtès]

Hello,

On FreeBSD 7.2, the ‘gzip.at’ test fails:

--8<---------------cut here---------------start------------->8---
38. gzip.at:23: testing ...
./gzip.at:28:

cat /dev/null | gzip - > /dev/null 2>&1 || exit 77

tar xfvz /dev/null

--- -   2010-03-30 23:17:13.059109217 +0000
+++ 
/tmp/nix-build-rzc7fcvhilrxs2ds5b5ki1b2d79153qj-tar-1.23.drv-0/tar-1.23/tests/testsuite.dir/at-groups/38/stderr
     2010-03-30 23:17:13.000000000 +0000
@@ -1,5 +1,4 @@
-
-gzip: stdin: unexpected end of file
+gzip: (stdin): unexpected end of file
 tar: Child returned status 1
 tar: Error is not recoverable: exiting now
 
38. gzip.at:23: 38. gzip (gzip.at:23): FAILED (gzip.at:28)
--8<---------------cut here---------------end--------------->8---

(From <http://hydra.nixos.org/build/337031>.)

Perhaps only the last two lines should be compared?

(I believe this is not platform-specific.  Rather this has to do with
the fact that the “gzip:” line is printed by gzip, whose output is not
under tar’s control.)

Thanks,
Ludo’.