olpa, OSS developer

I’ve just sent an extended abstract for the XML Prague 2007 conference. I hope it will be accepted.

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Small, but pleasant functionality is added to XSieve. Now it’s possible to call arbitrary XPath functions:

(write (x:call "concat" "ab" "cde" "fgh"))
(write (x:call "generate-id"))
(write (x:call "generate-id" (x:current)))

In the mailing list docbook-apps, I recently answered to the post titled “General questions about DocBook -> LaTeX“. I think my notes are interesting not only for the subscribers, but also for others.

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Some time ago I tried to compile XSieve for the win32 platform. I was partially successfull, I compiled everything except of the XSieve DLL itself. I’m not going to repeat the attempt in the near future, and I have to do something with the notes. The simplest solution is to put the notes to the blog for future reference.

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I’ve caught yet another libxml2/libxslt bug: Bug 407731.

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After long break, I returned back to XSieve and found that the new tools doesn’t compile the sources.

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I need to generate S-expressions like:

(let ((val "datum")) val)

The actual expressions are more complex, the value “datum” is dynamic, therefore the special Scheme feature “quasiquote” should be used:

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One of the unit testing tools (Testeez, to be more precise) is a bit too verbose. It displays not only the failed tests, but also the passed tests. When the number of the tests is big, it’s hard to find the failed one. Therefore, I decided to highlight them in red.

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The expression “1+2+3” is converted to:

(list-ec
    (:list e1 (gx:. gx:unit gx-ffi:number gx:fido (gx:unit 1)))
    (:list e2
      (gx:. gx:unit gx-ffi:number gx:fido
        (list-ec
            (:list e1 (gx:. gx:unit gx-ffi:number gx:fido (gx:unit 2)))
            (:list e2 (gx:. gx:unit gx-ffi:number gx:fido (gx:unit 3)))
          (+ e1 e2))))
  (+ e1 e2))

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I’ve upgraded wordpress to the version 2.1. It wasn’t very easy because the authors have broken incompatibility with older versions, therefore my tweaked theme stopped working. I hope I repaired everything. Also, I temporary switched off spam protection to see how active are the spammers now.