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regexp and valid-sre?

This page is part of the web mail archives of SRFI 115 from before July 7th, 2015. The new archives for SRFI 115 contain all messages, not just those from before July 7th, 2015.

Why can the procedure 'regexp' be called with an already compiled <re> which is just returned?

Why is the procedure 'valid-sre?' necessary? You could just call 'regexp' and use 'guard' to check for any errors.