Several years ago we have started a new project. We do not like neither hate any particular language, thus the decision what language to use was pragmatical: xslt 2.0 fitted perfectly.

At present it's a solid volume of xslt code. It exhibits all the virtues of any other good project in other language: clean design, modularity, documentation, sophisticationless (good code should not be clever).

Runtime profile of the project is that it deals with xml documents with sizes from a few dozens of bytes to several megabytes, and with xml schemas from simple ones like a tabular data, and to rich like xhtml and untyped. Pipeline of stylesheets processes gigabytes of data stored in the database and in files.

All the bragging above is needed here to introduce the context for the following couple of lines.

The diversity of load conditions and a big code base, exposed xslt engine of choice to a good proof test. The victim is Saxon. In the course of project we have found and reported many bugs. Some of them are nasty and important, and others are bearable. To Michael Kay's credit (he's owner of Saxon) all bugs are being fixed promtly (see the last one).

Such project helps us to understand a weak sides of xslt (it seems sometimes they, in WG, lack such experience, which should lead them through).

Well, it has happened so that we're helping to Saxon project. Unintentionally, however!

P.S. About language preferences.

Nowdays we're polishing a COBOL generation. To this end we have familiarized ourselves with this language. That's the beatiful language. Its straightforwardness helps to see the evolution of computer languages and to understand what and why today's languages try to timidly hide.