make-options-doc: Make optionIdPrefix configurable ("opt-")

nixos/lib/make-options-doc/default.nix

@@ -26,6 +26,8 @@
   # If you include more than one option list into a document, you need to
   # provide different ids.
 , variablelistId ? "configuration-variable-list"
+  # Strig to prefix to the option XML/HTML id attributes.
+, optionIdPrefix ? "opt-"
 , revision ? "" # Specify revision for the options
 # a set of options the docs we are generating will be merged into, as if by recursiveUpdate.
 # used to split the options doc build into a static part (nixos/modules) and a dynamic part
@@ -183,6 +185,7 @@ in rec {
       --stringparam documentType '${documentType}' \
       --stringparam revision '${revision}' \
       --stringparam variablelistId '${variablelistId}' \
+      --stringparam optionIdPrefix '${optionIdPrefix}' \
       -o intermediate.xml ${./options-to-docbook.xsl} sorted.xml
     ${pkgs.libxslt.bin}/bin/xsltproc \
       -o "$out" ${./postprocess-option-descriptions.xsl} intermediate.xml

nixos/lib/make-options-doc/options-to-docbook.xsl

@@ -15,6 +15,7 @@
   <xsl:param name="documentType" />
   <xsl:param name="program" />
   <xsl:param name="variablelistId" />
+  <xsl:param name="optionIdPrefix" />
 
 
   <xsl:template match="/expr/list">
@@ -36,7 +37,7 @@
       <xsl:attribute name="id" namespace="http://www.w3.org/XML/1998/namespace"><xsl:value-of select="$variablelistId"/></xsl:attribute>
         <xsl:for-each select="attrs">
           <xsl:variable name="id" select="
-            concat('opt-',
+            concat($optionIdPrefix,
               translate(
                 attr[@name = 'name']/string/@value,
                 '*&lt; >[]:',