I've applied a fix to the implementation of SRFI 117 from Rhys Ulerich.
Thank you, Rhys!
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(edited slightly)
--------- From: Rhys Ulerich Date: Thu, Aug 16, 2018 at 9:09 PM
When prepping a pull request for https://github.com/arcfide/chez-srfi I noticed two places in the reference implementation where an export line was duplicated.