I've prepared a patch that adds partial support for tail patterns.
Things like the the SRFI-34 `guard' macro from [0] are supported, but
you still can't combine dotted patterns with tail patterns, e.g.
(syntax-rules (else)
((foo bar ... (else something) . rest)
<TEMPLATE-HERE>))
will *not* work; there's the issue that one can't just transcribe
the implementation of this feature from the latest version of psyntax,
as I've done for non-dotted tail patterns, as it's implemented using a
dotted pattern like the above. Alas!
[0] <http://article.gmane.org/gmane.lisp.guile.devel/9442>
* module/ice-9/psyntax.scm (syntax-case, $sc-dispatch): Add support for
tail patterns, transcribed from the latest psyntax.
* module/ice-9/psyntax-pp.scm: Regenerated.
* test-suite/tests/syncase.test: Add tests for tail patterns.
This directory contains various bits of Guile Scheme code.
Most of these are packaged as modules, with foo.scm implementing
the module `(ice-9 foo)'.
The non-module files are:
boot-9.scm -- loaded on guile startup
implements module system + lots of other stuff
arrays.scm -- loaded by boot-9.scm
networking.scm -- loaded by boot-9.scm
posix.scm -- loaded by boot-9.scm
r4rs.scm -- loaded by boot-9.scm
aa3819aa34