conversion fails on dup stylenames

[peppobon]

When the src idml has dup style names (eg a para style and a char style)
idml2xml/xsl/modes/GenerateHubformat.xsl
fails with the following error at line 792:
A sequence of more than one item is not allowed as the value of variable $lang-by-style (@xml:lang, @xml:lang)

[gimsieke]

IIRC we took some measures to make css:rule names unique. If they aren’t effective here (or if it turns out we didn’t), we should consider doing so now. Or consider using other criteria such as: In this function idml2xml:text-lang(), we know that we are in paragraph context anyway.
We should probably also question why idml2xml:text-lang() seems to take account paragraph styling only. What if a paragraph contains character ranges with a different language?

[polypunkt]

I fixed the conversion failure by only choosing para styles for the language determination. But as Gerrit already mentioned: we should consider improving the whole function and also handle the contained character style ranges.