From 958caa58c089037ffb8cd71bc342bb9d798a6dd3 Mon Sep 17 00:00:00 2001
From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Sun, 22 Nov 2015 23:43:36 -0500
Subject: man: include the target name when linking to man pages in html output

Links like http://www.freedesktop.org/software/systemd/man/systemd.socket.html
are changed to http://www.freedesktop.org/software/systemd/man/systemd.socket.html#Accept=.

This implementation is quick & dirty, and misses various corner
cases. A fairly important one is that when a few directives share the
same anchor (which happens when multiple directives are described in
the same paragraph), generated links for everything except the first
one link to an invalid anchor. Another shortcoming is that the
formatting does not use the proper generateID machinery, so the anchor
name could be wrong in some cases. But it seems to work for a large
percentage of links, so seems to be an improvement in usability. When
the anchor is missing, we land at the top of the page, which is the
same as before. If the anchor were to point to different spot, this
would be more confusing... Not sure if that ever happens. Anyway, the
user should be able to recover from landing on the wrong place in the
page.

(Mostly) fixes https://github.com/systemd/systemd/issues/1956.
---
 man/custom-html.xsl           | 3 ++-
 tools/make-directive-index.py | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/man/custom-html.xsl b/man/custom-html.xsl
index 84c23014e4..e89d73e7f1 100644
--- a/man/custom-html.xsl
+++ b/man/custom-html.xsl
@@ -37,7 +37,8 @@
 <xsl:template match="citerefentry[not(@project)]">
   <a>
     <xsl:attribute name="href">
-      <xsl:value-of select="refentrytitle"/><xsl:text>.html</xsl:text>
+      <xsl:value-of select="refentrytitle"/><xsl:text>.html#</xsl:text>
+      <xsl:value-of select="refentrytitle/@target"/>
     </xsl:attribute>
     <xsl:call-template name="inline.charseq"/>
   </a>
diff --git a/tools/make-directive-index.py b/tools/make-directive-index.py
index 17b1325bba..8091683fee 100755
--- a/tools/make-directive-index.py
+++ b/tools/make-directive-index.py
@@ -268,6 +268,7 @@ def _make_section(template, name, directives, formatting):
             b = tree.SubElement(para, 'citerefentry')
             c = tree.SubElement(b, 'refentrytitle')
             c.text = manpage
+            c.attrib['target'] = varname
             d = tree.SubElement(b, 'manvolnum')
             d.text = manvolume
         entry.tail = '\n\n'
-- 
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