common xslt code optimization for metanorma/mn2pdf#245

Author: Intelligent2013

xslt_src/common.xsl

@@ -17784,6 +17784,24 @@
 		</xsl:if>
 	</xsl:template>
 
+	<!-- optimization: remove clause if table_only_with_id isn't empty and clause doesn't contain table or dl with table_only_with_id -->
+	<xsl:template match="*[local-name() = 'clause' or local-name() = 'p' or local-name() = 'definitions' or local-name() = 'annex']" mode="update_xml_step1">
+		<xsl:choose>
+			<xsl:when test="$table_only_with_id != '' and not(.//*[local-name() = 'table' or local-name() = 'dl'][@id = $table_only_with_id])">
+				<xsl:copy>
+					<xsl:copy-of select="@*"/>
+				</xsl:copy>
+			</xsl:when>
+			<xsl:otherwise>
+				<xsl:copy>
+					<xsl:copy-of select="@*"/>
+					<xsl:apply-templates mode="update_xml_step1"/>
+				</xsl:copy>
+			</xsl:otherwise>
+		</xsl:choose>
+	</xsl:template>
+	
+	
 	<!-- =========================================================================== -->
 	<!-- END STEP1: Re-order elements in 'preface', 'sections' based on @displayorder -->
 	<!-- =========================================================================== -->