[master] 19dba7e59 zcat(1) was originally, and still on OSX only for compress(1) files.

[Poul-Henning Kamp]

commit 19dba7e59b28b167dfeda647382c72c0d00eed25
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Nov 29 21:14:56 2021 +0000

    zcat(1) was originally, and still on OSX only for compress(1) files.

diff --git a/bin/varnishtest/tests/u00019.vtc b/bin/varnishtest/tests/u00019.vtc
index 9683d6967..4b4168ad2 100644
--- a/bin/varnishtest/tests/u00019.vtc
+++ b/bin/varnishtest/tests/u00019.vtc
@@ -15,4 +15,4 @@ client c1 {
 
 shell {varnishlog -d -w - -n ${v1_name} | gzip >vsl.gz}
 shell {ls -l}
-shell -match "RespStatus +503" {zcat vsl.gz | varnishlog -r -}
+shell -match "RespStatus +503" {gunzip < vsl.gz | varnishlog -r -}