docbook2X converts DocBook to Texinfo in two steps:
The DocBook source is converted by a stylesheet into an intermediate XML format, Texi-XML.
Texi-XML is simpler than DocBook and closer to the Texinfo format; it is intended to make the stylesheets’ job easier.
The stylesheet for this purpose has the public ID:
-//Steve Cheng//DOCUMENT DocBook Texinfo Stylesheet//EN
Alternatively, you can refer to the stylesheet with this URI:
http://docbook2x.sf.net/latest/xslt/texi/docbook.xsl
Run this stylesheet with db2x_xsltproc.
Texi-XML is converted to the actual Texinfo files by db2x_texixml.
The docbook2texi command does both steps automatically, but if any problems occur, you can see the errors more clearly if you do each step separately:
$ db2x_xsltproc -s texi mydoc.xml -o mydoc.txml $ db2x_texixml mydoc.txml