docbook-xsl: restore patch to prevent stack overflows when generating huge manpages

docbook-xsl/.signature

@@ -1,5 +1,6 @@
 untrusted comment: verify with /etc/ports/contrib.pub
-RWSagIOpLGJF3xATi6j1sah0A0ceVVzjzVGl1dbrCNbNXWCw/xmayCOg/gdHYVwYdnh/1r5Ic7xtyJra6oER2fEcDrIop1bP3gg=
-SHA256 (Pkgfile) = 9d3b3d94f095203d26a5b066eee9c23f1e67a1bbb547db91c573178d30a920b1
+RWSagIOpLGJF3xPUD2XvvykIy86PazzgoUmvB1/6NxCK4V4ndSHLjnx/kiRpjnKVj+PaEbqyXIAxIybMjua9MwYxMIy4eODnygA=
+SHA256 (Pkgfile) = 54fa73710eba9e9260b0267e956e944d2f7bf9d6cf27ff74a3c7405d4ac592a5
 SHA256 (.footprint) = 4b6ed45e648412c75a129eafd09546c50576f7c56ed35cfac9b37a54b80f942f
 SHA256 (docbook-xsl-nons-1.79.2.tar.bz2) = ee8b9eca0b7a8f89075832a2da7534bce8c5478fc8fc2676f512d5d87d832102
+SHA256 (non-recursive-string-subst.patch) = 193ec26dcb37bdf12037ed4ea98d68bd550500c8e96b719685d76d7096c3f9b3

docbook-xsl/Pkgfile

@@ -5,12 +5,13 @@
 
 name=docbook-xsl
 version=1.79.2
-release=3
-source=(https://github.com/docbook/xslt10-stylesheets/releases/download/release/$version/$name-nons-$version.tar.bz2)
+release=4
+source=(https://github.com/docbook/xslt10-stylesheets/releases/download/release/$version/$name-nons-$version.tar.bz2 non-recursive-string-subst.patch)
 
 build() {
 	cd $name-nons-$version
 
+	patch -Np2 -i $SRC/non-recursive-string-subst.patch
 	install -v -m 0755 -d $PKG/usr/share/xml/docbook/xsl-stylesheets-$version
 
 	cp -v -R \

docbook-xsl/non-recursive-string-subst.patch

@@ -0,0 +1,32 @@
+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
+
+--- docbook-xsl-1.78.1+dfsg.orig/docbook-xsl/lib/lib.xsl
++++ docbook-xsl-1.78.1+dfsg/docbook-xsl/lib/lib.xsl
+@@ -6,7 +6,11 @@
+ 
+      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 -->
+@@ -52,6 +56,9 @@
+   <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">
+