From 699dcb70fbd4295f2876264cbc33ef897c4938b1 Mon Sep 17 00:00:00 2001
From: Gerardo Di Iorio <arete74@gmail.com>
Date: Mon, 25 Feb 2019 17:56:18 +0100
Subject: [PATCH] docbook-xsl: fix non-recursive_string_subst

Signed-off-by: Gerardo Di Iorio <arete74@gmail.com>
---
 .../patches/non-recursive_string_subst.patch  | 30 +++++++++++++++++++
 srcpkgs/docbook-xsl/template                  |  4 +--
 2 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 srcpkgs/docbook-xsl/patches/non-recursive_string_subst.patch

diff --git a/srcpkgs/docbook-xsl/patches/non-recursive_string_subst.patch b/srcpkgs/docbook-xsl/patches/non-recursive_string_subst.patch
new file mode 100644
index 00000000000..13193e2f03a
--- /dev/null
+++ b/srcpkgs/docbook-xsl/patches/non-recursive_string_subst.patch
@@ -0,0 +1,30 @@
+Description: use EXSLT "replace" function when available
+ A recursive implementation  of string.subst is problematic,
+ long strings with many matches will cause stack overflows.
+Author: Peter De Wachter <pdewacht@gmail.com>
+Bug-Debian: https://bugs.debian.org/750593
+
+--- lib/lib.xsl
++++ lib/lib.xsl
+@@ -10,7 +10,10 @@
+      This module implements DTD-independent functions
+ 
+      ******************************************************************** -->
+-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
++<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
++                xmlns:str="http://exslt.org/strings"
++                exclude-result-prefixes="str"
++                version="1.0">
+ 
+ <xsl:template name="dot.count">
+   <!-- Returns the number of "." characters in a string -->
+@@ -56,6 +59,9 @@
+   <xsl:param name="replacement"/>
+ 
+   <xsl:choose>
++    <xsl:when test="function-available('str:replace')">
++      <xsl:value-of select="str:replace($string, string($target), string($replacement))"/>
++    </xsl:when>
+     <xsl:when test="contains($string, $target)">
+       <xsl:variable name="rest">
+         <xsl:call-template name="string.subst">
diff --git a/srcpkgs/docbook-xsl/template b/srcpkgs/docbook-xsl/template
index d94c36584d4..d83236e6972 100644
--- a/srcpkgs/docbook-xsl/template
+++ b/srcpkgs/docbook-xsl/template
@@ -2,8 +2,8 @@
 pkgname=docbook-xsl
 reverts="1.79.2_1"
 version=1.79.1
-revision=6
-noarch=yes
+revision=7
+archs=noarch
 depends="xmlcatmgr docbook-xml>=4.2"
 short_desc="Docbook XSL modular stylesheet"
 maintainer="Juan RP <xtraeme@voidlinux.org>"