[yelp-xsl] db-chunk: Default db.chunk.basename to 'index' without @id

[Shaun McCance <shaunm src gnome org>]

commit 69b01d5f65ad0f228903ca6c7295f4d498be9213
Author: Shaun McCance <shaunm gnome org>
Date:   Tue May 17 09:44:53 2011 -0400

    db-chunk: Default db.chunk.basename to 'index' without @id

 xslt/docbook/common/db-chunk.xsl |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/xslt/docbook/common/db-chunk.xsl b/xslt/docbook/common/db-chunk.xsl
index 4cd8f2a..b951021 100644
--- a/xslt/docbook/common/db-chunk.xsl
+++ b/xslt/docbook/common/db-chunk.xsl
@@ -74,7 +74,19 @@ The base filename of the output file, without an extension
 
 REMARK: Describe what this does
 -->
-<xsl:param name="db.chunk.basename" select="/*/@id | /*/@xml:id"/>
+<xsl:param name="db.chunk.basename">
+  <xsl:choose>
+    <xsl:when test="/*/@xml:id">
+      <xsl:value-of select="/*/@xml:id"/>
+    </xsl:when>
+    <xsl:when test="/*/@id">
+      <xsl:value-of select="/*/@id"/>
+    </xsl:when>
+    <xsl:otherwise>
+      <xsl:text>index</xsl:text>
+    </xsl:otherwise>
+  </xsl:choose>
+</xsl:param>
 
 
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