DOCBOOK-APPS: lang=en-US destroys titles

[Elliotte Rusty Harold <elharo@metalab.unc.edu>]

I tried to report this on SourceForge but couldn't figure out how to do that. I'm using Docbook XSL 1.4.1. 

After I added a lang="en-US" attribute to my root book element, all titles in my book promptly disappeared. They were still present in the TOCs, but the actual headers in the text were blank. This was for sections, figures, notes, examples, everything that had a title. Removing lang="en-US" from the book element fixed the problem. I have not yet experimented with other lang codes to see what they do. 

The problem was evident in both PDF produced by FOP and chunked HTML. I haven't checked the other variants yet. 
-- 

+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo@metalab.unc.edu | Writer/Programmer |
+-----------------------+------------------------+-------------------+ 
|          The XML Bible, 2nd Edition (Hungry Minds, 2001)           |
|              http://www.ibiblio.org/xml/books/bible2/              |
|   http://www.amazon.com/exec/obidos/ISBN=0764547607/cafeaulaitA/   |
+----------------------------------+---------------------------------+
|  Read Cafe au Lait for Java News:  http://www.cafeaulait.org/      | 
|  Read Cafe con Leche for XML News: http://www.ibiblio.org/xml/     |
+----------------------------------+---------------------------------+