[vwnc] how to parse textual markup (Wikitext et. al.)

> Hi everybody,
>
> (I tried hard, but standing in my way all the time I couldn't arrive  
> anywhere; please help ...)
>
> I *just* want to write a parser for some light textual markup like  
> follows:
>
> ---%<------%<------%<------%<------
>
> A section title
> ========
>
> Some first paragraph
> with linebreak.
>
> A subsection title
> ---------------------
>
> A first paragraph.
>
> A second paragraph.
>
>   * a list item
>   * another list item
>   * same
>
> Another subsection title
> -----------------------------
>
> A first paragraph.
>
> A second paragraph.
>
> ---%<------%<------%<------%<------
>
> This should parse into a document tree à la DOM to transform
> it to XHTML or anything else. Performance is not an issue!
>
> I tried to define different state objects with different closures in them
> to be evaluated on each different kind of input line arriving, but  
> couldn't
> come up with a decent design that allows nesting of sections.
>
> One problem is, that a section or a subsection doesn't know that
> it's going to be a section, till two lines later, when the underline
> arrives. Actually I see a lot of case statements and stacking and
> doubling code.
>
> Just blinded by the obvious, perhaps ...
>
> Many thanks for every hint
>
> Thomas
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