tei2xelatex: format-date is not language specific

[kthoden]

When using

<xsl:value-of select="format-date(xs:date(./tei:date/@when), '[D]. [MNn] [Y0001]', 'de', (), 'DE')"/>

with Saxon HE, the output is

[Language: en]13. July 2018

as explained on https://www.saxonica.com/html/documentation/functions/fn/format-dateTime.html

Workaround: use Saxon PE as delivered with XXE professional , but this has problems with some XSL statements:

Static error at char 11 in xsl:apply-templates/@select on line 87 column 89 of tei2xelatex.xsl:
  XTTE0520: Required item type of @select attribute of xsl:apply-templates is node();
  supplied value has item type xs:string

[kthoden]

Oxygen has Saxon PE built in, while XXE doesn't have it. However, Saxon PE can only be used in the Oxygen GUI, not on command line: https://www.oxygenxml.com/forum/topic9816.html

NB, issue with xsl:apply-templates has been solved.