Please, how to do in xsl-fo something as receipt printing? It means only one page printout with height of page by content? So far, I have only working with A4 printouts with paging, now I need to print a long receipt, ie a single-page long printout, where I do not know the length of the page. Thanks.
You could do it in two passes:
XSL-FO, as implemented, really only works with fixed page heights. XSL 1.1 allows you to use page-height="indefinite"
(see https://www.w3.org/TR/xsl11/#page-height ), but AFAIK, it isn't implemented by any formatter.
Every formatter (I believe) can output an XML representation of its formatted result. Area Tree XML is formatter-specific, but you may be able to use the XSLT Extensions from the Print and Page Layout Community Group (see https://www.w3.org/community/ppl/wiki/XSLTExtensions and https://github.com/pplcg/XSLTExtensions ) both to simplify working with the Area Tree XML and to do it within your XSLT transformation.
Once you know how much space the receipt needs, you can regenerate/modify the XSL-FO to use a page of the correct height to fit everything exactly.
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