[xml/sgml-pkgs] Bug#419091: More information on RelaxNG validation bug

[brian m. carlson]

I have compiled libxml2 with RelaxNG debugging (change the #if 0 to #if
1 in relaxng.c) and produced a debugging log[0] with DocBook 5.0CR4 on
the test document.

The interesting part (for this bug) comes around line 11832, where it
claims that "Validating element imagedata failed".  The group
db.imageobject.content can contain three types of imagedata:
db.imagedata, db.imagedata.mathml, and db.imagedata.svg.  libxml2
proceeds to try validating against the last of these, fails because it
does not contain an svg:svg, and promptly gives up.

Unfortunately, there are two other alternatives that it neglected to
consider in totality, the first of which is the valid one.

HTH.

[0] http://crustytoothpaste.ath.cx/~bmc/files/free/dump/xmldump

-- 
brian m. carlson / brian with sandals: Houston, Texas, US
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