catch name
#markup-point event
Use #markup-point to signal a markup-point-event to a do markup-parse .
In the following example, page breaks are inserted following every section element. The page breaks
are represented as processing instructions. In the function insert-page-breaks, a
markup-point-event containing the necessary processing instruction is prepared by invoking do
xml-parse on an otherwise empty input instance, and storing the markup-point-event that is
created. The element rule for section inserts this markup-point-event after every
section element. The result is a markup event stream which is identical to the original, save that
every section element event is followed by a processing instruction event (that is, a
markup-point-event ) representing a page break.
global markup-point-event page-break-instruction define markup source function insert-page-breaks value markup source input-markup as do xml-parse scan "<?page-break?>" void #content take any* catch #markup-point event void #content set page-break-instruction to event done do markup-parse input-markup output "%c" done element "section" signal throw #markup-start #current-markup-event output #content signal throw #markup-end #current-markup-event signal throw #markup-point page-break-instruction element #implied signal throw #markup-start #current-markup-event output "%c" signal throw #markup-end #current-markup-event