I've just published draft #4 of SRFI 192. It was submitted by John Cowan, author of the SRFI.

Here are John's comments on the draft:

I've added two new procedures from R6RS: a constructor make-i/o-invalid-position-error for use by custom ports, and i/o-invalid-position-error? for use by user code to detect a bad position.

Here is the commit summary:

• Add make-file-error support
• Update explanation of peek operation and port positions
• added i/o-invalid-position-error? predicate
• make-i/o-invalid-position-error
• typo
• Publish fourth draft.

Here's the diff:

https://github.com/scheme-requests-for-implementation/srfi-192/compare/draft-3..draft-4

Regards,


SRFI Editor