[r6rs-discuss] Macro expansion erratum

[Michael Sperber]

Sorry for being so late replying to this ... too much to do:

Kristen Eisenberg <kristen.eisenberg at yahoo.com> writes:

> At the end of §12.1, the R6RS library report states: “An algebra that
> defines how marks and substitutions work more precisely is given in
> section 2.4 of Oscar Waddell's PhD thesis.”  This citation is in
> error -- the algorithm specified in the cited work is not consistent
> with, and its behaviour is not compatible with, statements in R6RS
> itself about the intended expansion algorithm. [...]

You're right.  (And it's a quite subtle issue, so I always appreciate
when somebody else understands this kind of aspect of hygienic macro
expansion without their head exploding.) Robert Ransom also submitted
this one in 2010:

http://lists.r6rs.org/pipermail/r6rs-discuss/2010-February/006121.html

... and it's been noted in the errata at:

http://www.r6rs.org/r6rs-errata.html

-- 
Regards,
Mike