[r6rs-discuss] @ should be a valid identifier

[John Cowan]

Derick Eddington scripsit:

> Following my comments below, I cannot see a reason why @ should not have
> been allowed to be an identifier.  Is there a good reason @ should not
> be a valid identifier?

Yes, there is.

If @ were permitted as the initial character of an identifier, then it
would be ambiguous whether {, at foo} and {,@ foo} were unquotes or
splicing unquotes.

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