From d1e80ea77af33307fcb672d7c5aa386172c8a789 Mon Sep 17 00:00:00 2001
From: Lars Thorsen <lars@erlang.org>
Date: Wed, 12 Apr 2017 08:24:56 +0200
Subject: [erl_docgen] Update the reference manual function name sort

The function for sorting the table of contents is updated
to handle reference manuals with C functions.
---
 lib/erl_docgen/priv/xsl/db_html.xsl | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

(limited to 'lib/erl_docgen/priv/xsl')

diff --git a/lib/erl_docgen/priv/xsl/db_html.xsl b/lib/erl_docgen/priv/xsl/db_html.xsl
index 4c7df1d1a0..6eafa2a165 100644
--- a/lib/erl_docgen/priv/xsl/db_html.xsl
+++ b/lib/erl_docgen/priv/xsl/db_html.xsl
@@ -66,6 +66,10 @@
        Additionally, callbacks may be included, as in gen_server.xml:
        <name>Module:handle_call(Request, From, State) -> Result</name>
 
+       For C reference pages the name tag has a substructure where the nametext tag
+       is used in the sort, as in erl_nif.xml
+       <name><ret>void *</ret><nametext>enif_alloc(size_t size)</nametext></name>
+
        So first, get the name from either the attribute or the element value.
        Then, reverse the case of the first character. This is because xsltproc, used for processing,
        orders uppercase before lowercase (even when the 'case-order="lower-first"' option
@@ -82,12 +86,19 @@
 
     <xsl:variable name="base">
       <xsl:choose>
-        <xsl:when test="string-length($elem/@name) > 0">
-          <xsl:value-of select="$elem/@name"/>
-        </xsl:when>
-        <xsl:otherwise>
-          <xsl:value-of select="$elem"/>
-        </xsl:otherwise>
+	<xsl:when test="ancestor::cref">
+	  <xsl:value-of select="$elem/nametext"/>
+	</xsl:when>
+	<xsl:otherwise>       
+	  <xsl:choose>
+            <xsl:when test="string-length($elem/@name) > 0">
+              <xsl:value-of select="$elem/@name"/>
+            </xsl:when>
+            <xsl:otherwise>
+              <xsl:value-of select="$elem"/>
+            </xsl:otherwise>
+	  </xsl:choose>
+	</xsl:otherwise>
       </xsl:choose>
     </xsl:variable>
 
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