--- gnumeric-1.12.43/test/GnumericTest.pm.~1~	Wed May 30 22:31:13 2018
+++ gnumeric-1.12.43/test/GnumericTest.pm	Mon Aug 20 14:56:19 2018
@@ -421,7 +421,7 @@
     my $code = system ("$ssconvert '$file' '$tmp' 2>&1 | sed -e 's/^/| /'");
     &system_failure ($ssconvert, $code) if $code;
 
-    my $htxt = `zcat -f '$tmp' | $normalize_gnumeric | sha1sum`;
+    my $htxt = `gzip -dcf '$tmp' | $normalize_gnumeric | sha1sum`;
     my $newsha1 = lc substr ($htxt, 0, 40);
     die "SHA-1 failure\n" unless $newsha1 =~ /^[0-9a-f]{40}$/;
 
@@ -442,13 +442,13 @@
 
 	my $tmp1 = "$tmp-old";
 	&junkfile ($tmp1);
-	my $code1 = system ("zcat -f '$saved' >'$tmp1'");
-	&system_failure ('zcat', $code1) if $code1;
+	my $code1 = system ("gzip -dcf '$saved' >'$tmp1'");
+	&system_failure ('gzip', $code1) if $code1;
 
 	my $tmp2 = "$tmp-new";
 	&junkfile ($tmp2);
-	my $code2 = system ("zcat -f '$tmp' >'$tmp2'");
-	&system_failure ('zcat', $code2) if $code2;
+	my $code2 = system ("gzip -dcf '$tmp' >'$tmp2'");
+	&system_failure ('gzip', $code2) if $code2;
 
 	my $code3 = system ('diff', @ARGV, $tmp1, $tmp2);
 
@@ -512,13 +512,13 @@
 
     my $tmp4 = "$tmp.xml";
     &junkfile ($tmp4) unless $keep;
-    $code = system (&quotearg ("zcat", "-f", $tmp1) . "| $normalize_gnumeric >" . &quotearg ($tmp4));
-    &system_failure ('zcat', $code) if $code;
+    $code = system (&quotearg ("gzip", "-dcf", $tmp1) . "| $normalize_gnumeric >" . &quotearg ($tmp4));
+    &system_failure ('gzip', $code) if $code;
 
     my $tmp5 = "$tmp-new.xml";
     &junkfile ($tmp5) unless $keep;
-    $code = system (&quotearg ("zcat" , "-f", $tmp3) . " | $normalize_gnumeric >" . &quotearg ($tmp5));
-    &system_failure ('zcat', $code) if $code;
+    $code = system (&quotearg ("gzip" , "-dcf", $tmp3) . " | $normalize_gnumeric >" . &quotearg ($tmp5));
+    &system_failure ('gzip', $code) if $code;
 
     $code = system ('diff', '-u', $tmp4, $tmp5);
     &system_failure ('diff', $code) if $code;
@@ -673,7 +673,7 @@
 	$file_filtered =~ s{^.*/}{};
 	$file_filtered =~ s/(\.gnumeric)$/-filter$1/;
 	unlink $file_filtered;
-	my $cmd = "zcat " . &quotearg ($file_resized) . " | $filter0 >" . &quotearg ($file_filtered);
+	my $cmd = "gzip -dcf " . &quotearg ($file_resized) . " | $filter0 >" . &quotearg ($file_filtered);
 	print STDERR "# $cmd\n" if $verbose;
 	$code = system ("($cmd) 2>&1 | sed -e 's/^/| /'");
 	&system_failure ($ssconvert, $code) if $code;
@@ -706,15 +706,15 @@
     my $tmp_xml = "$tmp.xml";
     unlink $tmp_xml;
     &junkfile ($tmp_xml) unless $keep;
-    $code = system ("zcat -f '$file_filtered' | $normalize_gnumeric | $filter1 >'$tmp_xml'");
-    &system_failure ('zcat', $code) if $code;
+    $code = system ("gzip -dcf '$file_filtered' | $normalize_gnumeric | $filter1 >'$tmp_xml'");
+    &system_failure ('gzip', $code) if $code;
 
     my $tmp2_xml = "$tmp-new.xml";
     unlink $tmp2_xml;
     &junkfile ($tmp2_xml) unless $keep;
-    # print STDERR "zcat -f '$tmp2' | $normalize_gnumeric | $filter2 >'$tmp2_xml'\n";
-    $code = system ("zcat -f '$tmp2' | $normalize_gnumeric | $filter2 >'$tmp2_xml'");
-    &system_failure ('zcat', $code) if $code;
+    # print STDERR "gzip -dcf '$tmp2' | $normalize_gnumeric | $filter2 >'$tmp2_xml'\n";
+    $code = system ("gzip -dcf '$tmp2' | $normalize_gnumeric | $filter2 >'$tmp2_xml'");
+    &system_failure ('gzip', $code) if $code;
 
     $code = system ('diff', '-u', $tmp_xml, $tmp2_xml);
     &system_failure ('diff', $code) if $code && !$ignore_failure;