better error messages on the build server

[Friedrich W. H. Kossebau]

Hi Jos,

good stuff, we need more people working on this like you, thanks!
/me looks at wall without mirror ;)

Am Dienstag, 15. Mai 2012, 13:00:58 schrieb Jos van den Oever:
> Hello all,
> 
> Over the weekend I ported the script to test document round-tripping and
> conversion from python to java. The advantage is an increase in speed and
> better error messages. The runtime for the tests has decreased from two
> hours to one hours and fifteen minutes.
> 
> The main advantage is that the ODF documents are now validated with Jing
> instead of libxml2. libxml2 has an incomplete implementation of Relax NG and
> this led to false positives (reported errors that are not real errors) and
> missed problems.
> 
> Currently 528 failing documents and 2175 passing. So one in five documents
> either crashes calligra or results in invalid ODF.

A few of these invalid ODFs are about 
--- 8< ---
token "0pt" invalid; must be a string matching the regular expression 
"([0-9]*[1-9][0-9]*(\.[0-9]*)?|0+\.[0-9]*[1-9][0-9]*|\.[0-9]*[1-9][0-9]*)
((cm)|(mm)|(in)|(pt)|(pc)|(px))"
--- 8< ---

>From 18.3.18 length or 18.3.26 positiveLength I cannot directly see why "0pt" 
is not valid. Do I miss to read the spec correctly, is that knowledge not 
hardcoded in the spec, or is the regular expression used in the validator 
perhaps too strict?

Cheers
Friedrich