Latest Maruku and Tweak for itex2MML 1.3.4

Instiki's LaTeX output also supports \Perp.

vendor/plugins/maruku/tests/unittest/divs/div2.md

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+Write a comment here
+*** Parameters: ***
+require 'maruku/ext/div'; {} # params 
+*** Markdown input: ***
++--
+ciao
+=--
+*** Output of inspect ***
+md_el(:document,[md_el(:div,[md_par(["ciao"])],{},[])],{},[])
+*** Output of to_html ***
+<div>
+<p>ciao</p>
+</div>
+*** Output of to_latex ***
+
+*** Output of to_md ***
+ciao
+*** Output of to_s ***
+ciao
+*** EOF ***
+
+
+
+	OK!
+
+
+
+*** Output of Markdown.pl ***
+<p>+--
+ciao
+=--</p>
+
+*** Output of Markdown.pl (parsed) ***
+Error: #<NoMethodError: private method `write_children' called for <div> ... </>:REXML::Element>