Hi Folks.

I am writting  a Parser Grammar in the XTreams package http://squeaksource.com/@BPfsPY0nJbH9IXBW/wqWrIinC

to handle the Wikimedia wikitext  https://en.wikipedia.org/wiki/Help:Wikitext#Text_formatting

My grammar looks like this so far:


'Body <- (   Template / Flow )*

LineCharacter <- [^\n]
Flow <-  Bold / Italic / BoldItalic/ LinkShort / LinkFull / LineCharacter /Template
Italic <-  "''''" Flow{"''''"}
Bold <-  "''''''" Flow{"''''''"}
BoldItalic <- "''''''''''''" Flow{"''''''''''''"}

LinkShort <- "[" .{&[>\]]} "]"
LinkFull <- "[" Flow{">"} .{"]"}
Whitespace <- [\s\t\n\r]*
Template <-  "{{"  Template "}}" /   "{{"  Flow{"}}"}
Heading4    <-    Whitespace "==== " Flow{" ====\n"}
'

Italic and Bold work just peachy.

Template works for a simple Templates like: 

{{reflist}}.

My Actor callback, for now just wraps it in a span like this:

<span style="text-decoration: underline">reflist</span>






Where things go south is when Templates are nested, for example on Infoboxes which are widely used in wiki markup:
Here is a truncated version of my output:

<span style="text-decoration: underline">Infobox Italian comune   <---This is where the PEGActor callback started to wrap the outmost template.
| name                = Elmas
| official_name       = Comune di Elmas
....
| area_code           = 070
| website             = {{official website|http://www.comune.elmas.ca.it/</span>    <--here is the nested Template. As you can see the Grammar ended the  outermost <span></span> here and never recursed on the inner template.
| footnotes           =
}}  <---here is the outermost template should end.



So...I need a rule that will cover this.

Template <-  "{{"  Template "}}" /   "{{"  Flow{"}}"}
should be what?

Thank you for your help.
t