Mark H Weaver e7cf0457d7 Support => within case, and improve error messages for cond and case ... * module/ice-9/boot-9.scm (cond, case): Reimplement using syntax-case, with improved error messages and support for '=>' within 'case' as mandated by the R7RS. Add warnings for duplicate case datums and case datums that cannot be meaningfully compared using 'eqv?'. * module/system/base/message.scm (%warning-types): Add 'bad-case-datum' and 'duplicate-case-datum' warning types. * test-suite/tests/syntax.test (cond, case): Update tests to reflect improved error reporting. Add tests for '=>' within 'case'. * test-suite/tests/tree-il.test (partial evaluation): Update tests to reflect changes in how 'case' is expanded. * doc/ref/api-control.texi (Conditionals): Document '=>' within 'case'.		2012-02-08 16:27:48 -05:00
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base	Support => within case, and improve error messages for cond and case	2012-02-08 16:27:48 -05:00
repl	Update user-visible copyright dates in manual and REPL to 2012	2012-01-30 00:33:31 -05:00
vm	more define-syntax-rule usage	2011-09-02 11:36:14 +02:00
foreign.scm	add pointer->scm, scm->pointer	2011-03-17 10:39:02 +01:00
xref.scm	system xref maintains source mapping for nested procedures too	2010-09-24 13:24:48 +02:00