Idiom: custom blocks

Novelang has no semantic markup, insteads it creates an AST (Abstract Syntax Tree) to feed a stylesheet with. This allows creating document-specific idioms, to be handled at stylesheet level. Here is one.

Starting from source document like this:

<<
[INFO] This is an info block.
>>

<<
[WARNING] Beware of "this" paragraph.

(This warning spreads on several paragraphs.)
>>

We want lines of literal to appear in a special manner (like within a frame and with a special icon in the margin). Here is how to achieve this:

<?xml version="1.0"?>
<xsl:stylesheet
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
   xmlns:n="http://novelang.org/book-xml/1.0"
>
 <xsl:import href="default-html.xsl" />
 <xsl:import href="punctuation-FR.xsl" />

 <xsl:template match="/" >
   <xsl:apply-imports/>
 </xsl:template>

 <xsl:template match="n:paragraphs-inside-angled-bracket-pairs" >
   <xsl:choose>
     <xsl:when 
         test="n:paragraph-regular[1]/n:block-inside-square-brackets[1]='WARNING'" 
     >
       <blockquote>
         <b>WARNING</b><br/>
         <xsl:apply-templates />
       </blockquote>
     </xsl:when>
     <xsl:when 
         test="n:paragraph-regular[1]/n:block-inside-square-brackets[1]='INFO'" 
     >
       <blockquote>
         <b>INFO</b><br/>
         <xsl:apply-templates />
       </blockquote>
     </xsl:when>
     <xsl:otherwise>
       <blockquote>
         <xsl:apply-templates />
       </blockquote>
     </xsl:otherwise>
   </xsl:choose>

 </xsl:template>

 <xsl:template 
     match="n:block-inside-square-brackets[ text()='WARNING' or text()='INFO' ]" 
 />

</xsl:stylesheet>