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I get allways (10 times at least) the same result: ------------------------------------------------------------- \starttext \startluacode math.randomseed(os.time()) \stopluacode

Encode your Name and Surname as a \startluacode local a = {'null-terminated', 'dollar-terminated', 'Pascal'} context('%s string', a[math.random(1,3)]) \stopluacode \stoptext ------------------------------------------------------------- How can I randomize this?

Hmm... which version are you using? I do get a ranom output each time. Tested with 2009.12.31 and 2010.03.20.

This is LuaTeX, Version beta-0.60.0-2010040521 (rev 3596) \write18 enabled. (tst-b.tex ConTeXt ver: 2010.03.30 18:56 MKIV fmt: 2010.4.7 int: english/english

Since the math seed is set after \starttext, it should overwrite the value after reading the tuc file.

Actually, I consider saving the random number in tuc file to be a misfeature. A random sequence generator should generate a random sequence. If I want the same behavior all the time, I can use \setupsystem[random=12345] (which should also set math.randomseed).

I agree with this! A feature could be to save the last used random value in the tuc, so that one can continue with the former used sequenz. But this should not be used automatically, too. May be one should than say \setupsystem[random=last] Wolfgang