--- attr-2.4.47/test/run.old	2013-05-19 04:53:54.000000000 +0000
+++ attr-2.4.47/test/run	2017-07-01 22:43:09.541515814 +0000
@@ -84,7 +84,7 @@
   if (defined $line) {
     # Substitute %VAR and %{VAR} with environment variables.
     $line =~ s[%(\w+)][$ENV{$1}]eg;
-    $line =~ s[%{(\w+)}][$ENV{$1}]eg;
+    $line =~ s[%\{(\w+)\}][$ENV{$1}]eg;
   }
   if (defined $line) {
     if ($line =~ s/^\s*< ?//) {