On Fri, Jan 29, 2016 at 10:19 AM, John Cowan <xxxxxx@mercury.ccil.org> wrote:
Alex Shinn scripsit:

> The draft points out that the R6RS definition of string-titlecase in
> terms of char-titlecase is incorrect, however, it doesn't give the
> means to implement string-titlecase correctly.

Well, no; string-titlecase is not defined in terms of char-titlecase
in this SRFI, which is precisely what makes it different from R6RS.

Right, what I was suggesting is if we do provide "low-level"
procedures at all, we should provide ones that can be used
to implement the high-level procedures.

> I won't argue against their inclusion if you want them for backwards
> compatibility, but in that case we should provide the missing pieces.

I wanted to provide what R7RS provides, no more, no less.

The argument can be made for backwards compatibility with R6RS.