Derick Eddington <[EMAIL PROTECTED]> writes: > A recent discussion on the plt-scheme mailing list [1] caused me to > realize R6RS's `guard' is not specified to re-raise unhandled > continuable exceptions as continuable exceptions. R6RS Libraries 7.1 > says of `guard': "[if none of the `guard' clauses handle the exception] > then `raise' is re-invoked on the raised object within the dynamic > environment of the original call to `raise' except that the current > exception handler is that of the `guard' expression." That clearly says > `raise', but how can `raise' be "re-invoked" and how can there be an > "original call to `raise'" if it was not called in the first place > because `raise-continuable' was originally called?
Right. Your analysis that this came about because we copied the text from SRFI 34, which doesn't have `raise-continuable', is correct. We've decided to classify this as an error, and an erratum (to appear soon on r6rs.org) will say that `raise' should be changed to `raise-continuable' in the specification of `guard'. Thanks for spotting this, and for your analysis! -- Cheers =8-} Mike Friede, Völkerverständigung und überhaupt blabla _______________________________________________ r6rs-discuss mailing list [email protected] http://lists.r6rs.org/cgi-bin/mailman/listinfo/r6rs-discuss
