Comment 2 for bug 1737304

Thank you for the detailed explanation.
Didn't know if it's the way it's supposed to be, since not all implementations treat it the same way.

The issue came up when I was starting SBCL on a system where LC_CTYPE=C was set as default and doing
(ql:register-local-projects)

Took me quite some time to figure out the cause, so thought it might be helpful for others to handle it in a nicer way somewhere along the line. Probably handling the error in Quicklisp and giving an informative message is the most appropriate approach.