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Am 23.08.2009 um 17:52 schrieb Oliver Buerschaper:
I agree that my suggestion would sacrifice backwards compatibility. At the same time I'm not sure how much change to the MkIV kernel is desirable given that MkII is considered frozen. I'm really in no position to have an educated opinion on whether there should be as few changes as possible or rather the occasional clear cut. It's just that if you guys think that some clear cuts are due for MkIV anyway then there will probably be never a better time than now to make module loading more bullet-proof. As I was saying, I'm just thinking out loud ;-)
MkIV is ConTeXt’s feature without an doubt but it's not so easy as you think. I have myself two modules which work only with MkIV (simplefonts and games) but bigger ones like simpleslides or letter are just complexer styles and you can't expect from a user to upgrade to MkIV just to make a presentation or to write a short letter. I thought about integrating the version check into \setupmodule because the command is only used in modules and available in MkII and MkIV but Thomas and Aditya use it in the simpleslides module to pass parameters to the module and this a few times at different places and not only at the start of the file. Wolfgang