Range conformance

The spec says:
 A range matches any character in the range from the start character to the 
end, inclusive, using the Unicode ordering

It doesn't require the start character to be earlier in the ordering than 
the end character. This means that

 ["z"-"a"]
is the same as
 [ ]

Do we care? Should it be an error, or a warning?

Steven

Received on Thursday, 24 February 2022 10:15:24 UTC