@KevinH & Doitsu...Just finished testing my plugin with the Polish file. It seems that I was wrong. The xml:lang attribute has nothing to do with setting the language. So I guess the fact that my file was in unicode utf-8 was good enough.
Notably the Polish headings in Sigil's Book Browser display incorrectly but there's nothing I can really do about that perhaps due to severe ASCII restraints on zip file names(uses DOS Latin US on Windows). The Polish user will just have to rename his files in the Book Browser as he prefers.
Last edited by slowsmile; 01-12-2017 at 09:25 PM.
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