From 13ca8011bc610b042062c22b36cdda3f3a920481 Mon Sep 17 00:00:00 2001
From: Graham Percival <graham@percival-music.ca>
Date: Tue, 2 Feb 2010 13:36:08 +0000
Subject: [PATCH] Build fix: weird external_href problem in translations.

---
 Documentation/lilypond-texi2html.init | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/lilypond-texi2html.init b/Documentation/lilypond-texi2html.init
index 4a6e1b1582..64746f6051 100644
--- a/Documentation/lilypond-texi2html.init
+++ b/Documentation/lilypond-texi2html.init
@@ -928,9 +928,11 @@ sub lilypond_external_ref($$$$$$)
 
   # only lc() the last portion:
   my @htmlsplit = split('/', $href);
-  # change the last portion (the filename)
-  @htmlsplit[$#array] = lc( @htmlsplit[$#array] );
-  $href = join("/", @htmlsplit);
+  # change the last portion (the filename), if it exists
+  if ($#array > 0) {
+    @htmlsplit[$#array] = lc( @htmlsplit[$#array] );
+    $href = join("/", @htmlsplit);
+  }
 
   my $cross_ref = shift;
 
-- 
2.39.5