Re: explanation for ensuring no duplicate identifiers

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Kate Stewart #2321 On Fri, Jun 15, 2018 at 12:25 PM, Philippe Ombredanne <pombredanne@...> wrote: Alexios: good catch, though even printable may be too generous. A colon is printable and not a supported in a Windows file name for instance. Jilayne: We could/should more simply list the allowed characters and be very specific. Here is my suggestion: Allowed characters are ASCII: - Lower and upper case letters from A to Z. - Numbers from 0 to 9 - Dash '-', underscore '_', period '.' and plus '+' need to be a little careful here Philippe... "+" is reserved for license expressions. Best to stick with what's in Appendix IV of the spec today idstring = 1*(ALPHA / DIGIT / "-" / "." ) where ALPHA and DIGIT are per definition in https://tools.ietf.org/html/rfc5234 ALPHA = %x41-5A / %x61-7A ; A-Z / a-z DIGIT = %x30-39 ; 0-9 If you want to see "_" added, then probably should open an issue against the spec for 2.2 and get it consistent tthroughout. Thanks, Kate
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