Proposal for meta-data (third revision)

[Andrea Censi]

Hello again!

This is the revised revised revised proposal:

http://maruku.rubyforge.org/proposal.md
http://maruku.rubyforge.org/proposal.html
http://maruku.rubyforge.org/proposal.pdf

The main change was to use an opening string of brace+colon "{:" to
not lock-up the precious "{" forever, so that in the future one could
think of using the braces also for other purposes.

Changes were:

*	Changed the syntax for compatibility with a future extension mechanism.

	The first character in the curly braces must be a colon, optionally
	followed by a space:
	
		{: ref .class #id}
	
	The old syntax was `{ref .class #id}`.
	
	For ALDs, the new syntax is:
	
		{:ref_id: key=val .class #id }
	
	instead of:
	
		{ref_id}: key=val .class #id

	Converters that don't use this syntax may just ignore everything
	which is in curly braces and starts with ":".

        For regexp-based interpreters, this is the regular expression to
        get rid of this stuff: `/\{:(\\\}|[^\}])*\}/`. Just do a
`gsub` with the empty
        string, and you are done.

*	IAL can be put both *before* and *after* the element.
	There is no ambiguity as a blank line is needed between elements:
	
		Paragraph 1
		
		{:par2}
		Paragraph 2

	is equivalent to:
	
		Paragraph 1
	
		Paragraph 2
		{:par2}

*	Simplified rules for escaping.


-- 
Andrea Censi
      "Life is too important to be taken seriously" (Oscar Wilde)
Web: http://www.dis.uniroma1.it/~censi