From 89cb766ad7b94760dfef78f3f19432829619bb37 Mon Sep 17 00:00:00 2001
From: "Martin A. Brown" <martin@linux-ip.net>
Date: Tue, 23 Feb 2016 23:30:07 -0800
Subject: [PATCH] clean up the stray index.sgml left hanging around

---
 tldp/doctypes/docbooksgml.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tldp/doctypes/docbooksgml.py b/tldp/doctypes/docbooksgml.py
index c373dbf..a242407 100644
--- a/tldp/doctypes/docbooksgml.py
+++ b/tldp/doctypes/docbooksgml.py
@@ -174,11 +174,23 @@ ln \\
 # -- end of file'''
 
     def buildindex(self):
+        indexsgml = os.path.join(self.source.dirname, 'index.sgml')
+        if os.path.isfile(indexsgml):
+            self.indexsgml = lambda: None
+            return True
+
+        def unlink_indexsgml():
+            os.unlink(indexsgml)
+
+        self.indexsgml = unlink_indexsgml
         return self.shellscript(self.indexscript)
 
     def buildall(self):
         return self.shellscript(self.mainscript)
 
+    def post_buildall(self):
+        self.indexsgml()
+        return True
 
 #
 # -- end of file