gentoo-overlay/app-text/xindy/files/xindy-2.4-perl5.26.patch

--- xindy-2.4/make-rules/inputenc/make-inp-rules.pl
+++ xindy-2.4/make-rules/inputenc/make-inp-rules.pl
@@ -8,7 +8,7 @@
 
 
 while (<STDIN>) {
-  if (/\\indexentry{(.+)--([8-9a-f][0-9a-f])\}\{1\}/) {
+  if (/\\indexentry\{(.+)--([8-9a-f][0-9a-f])\}\{1\}/) {
     if (!($1 =~ /inputenc Error/)) {
       $i = hex($2);
       $macro = $1;