I think $ has the same considerations as *, though not as strongly (* is outright forbidden on Windows).  In practice, anything more than ASCII lowercase letters and digits is a Bad Idea.  We should stick to lowercase because there are case-folding filesystems like FAT, NTFS, and APFS .  (In the last two it is possible to enable case-sensitivity, but most people don't.)

I prefer "auto" to "all", because "auto" suggests creation on the fly (as I assume will be the case) whereas "all" suggests the pre-existence of countably many identifiers.

On Mon, Sep 21, 2020 at 2:49 AM Marc Nieper-Wißkirchen <xxxxxx@gmail.com> wrote:
Currently, the draft uses the library name (srfi 206 *), which may
have portability issues due to implementation-specific restrictions.

Proposals for a better name include:

(srfi 206 auto)
(srfi 206 all)
(srfi 206 $all)

(The latter to indicate that the library does not behave like a normal
library in every regard.)

What name do you prefer? I would like to make a choice.

Marc