I see this too, using up-to-date Debian sid. After some research I think this a bug in asciidoc.
fop.extensions parameter works only with FOP 0.20.5, or earlier[1]. With FOP version 1 (which FOP 0.93 will eventually be, I presume) you have to use fop1.extensions[2]. Just like Michalis said. Looking at /etc/asciidoc/docbook-xsl/fo.xsl I see the problem: <xsl:param name="fop.extensions" select="1" /> That should be fop1.extensions because of FOP 0.93 being in sid. I use this as a workaround, for now: a2x --format=pdf --xsltproc-opts="--param fop.extensions 0" \ --xsltproc-opts="--param fop1.extensions 1" file.txt [1] http://docbook.sourceforge.net/release/xsl/current/doc/fo/fop.extensions.html [2] http://docbook.sourceforge.net/release/xsl/current/doc/fo/fop1.extensions.html -- Kalle Valo -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]