PKP-TEI : fix latex

    <!-- maths (mathml traité dans la partie figures) -->

    <xsl:template match="tei:formula[@notation='latex']">

<xsl:variable name="clean" select="replace(., '^\$|(\$)$', '')"/>

        <xsl:choose>

            <xsl:when test="parent::tei:figure[@rend='inline']">

            <xsl:text>\(</xsl:text>

            <xsl:value-of select="$clean"/>

            <xsl:text>\)</xsl:text>

                <span class="{@notation}">

                    <xsl:choose>

                        <xsl:when test="starts-with(node(), '$') and substring(node(), string-length(node()), 1) = '$'">

                            <xsl:copy-of select="concat('\(', substring(node(), 2, string-length(node()) - 2), '\)')"/>

                        </xsl:when>

                        <xsl:when test="starts-with(node(), '\(') and substring(node(), string-length(node()) - 1, 2) = '\)'">

                            <xsl:copy-of select="."/>

                        </xsl:when>

                        <xsl:otherwise>

                            <xsl:copy-of select="concat('\(',node(),'\)')"/>

                        </xsl:otherwise>

                    </xsl:choose>

                </span>

            </xsl:when> 

            <xsl:otherwise>

            <xsl:text>$$</xsl:text>

            <xsl:value-of select="$clean"/>

            <xsl:text>$$</xsl:text>

                <div class="formula-tex">

                    <xsl:choose>

                        <xsl:when test="starts-with(node(), '$$') and substring(node(), string-length(node()) - 1, 2) = '$$'">

                            <xsl:copy-of select="concat('\[', substring(node(), 3, string-length(node()) - 4), '\]')"/>

                        </xsl:when>

                        <xsl:when test="starts-with(node(), '\[') and substring(node(), string-length(node()) - 1, 2) = '\]'">

                            <xsl:copy-of select="."/>

                        </xsl:when>

                        <xsl:otherwise>

                            <xsl:copy-of select="concat('\[',node(),'\]')"/>

                        </xsl:otherwise>

                    </xsl:choose>

                </div>

            </xsl:otherwise>

        </xsl:choose>

    </xsl:template>