[i18n-activity] UTF-8 encoding of value should be more clearly defined. (#1527)

aphillips has just created a new issue for https://github.com/w3c/i18n-activity:

== UTF-8 encoding of value should be more clearly defined. ==
## Proposed comment

3.2.1.3 value
https://www.w3.org/TR/baggage/#value

> A value contains UTF-8 encoded string. Any characters outside of the baggage-octet ranges of characters MUST be percent-encoded. Characters which are not required to be percent-encoded MAY be percent-encoded. 

The value space appears to require that the UTF-8 character encoding form be used, but this is not explicitly stated. There is also no discussion of what happens with percent-encoded octets that do not match UTF-8. I would suggest the following edits:

> A value contains a string whose character encoding MUST be UTF-8 [Encoding]. Any characters outside of the baggage-octet range of characters MUST be percent-encoded. Characters which are not required to be percent-encoded MAY be percent-encoded.
>
>When decoding the value, percent-encoded octet sequences that do not match the UTF-8 encoding scheme MUST be replaced with the replacement character (U+FFFD). 


## Instructions: 

This follows the process at https://w3c.github.io/i18n-activity/guidelines/review-instructions.html

1. Create the review comment you want to propose by replacing the prompts above these instructions, but **LEAVE ALL THE INSTRUCTIONS INTACT** 

2. Set a label to identify the spec: this starts with s: followed by the spec's short name. If you are unable to do that, ask a W3C staff contact to help.

3. Ask the i18n WG to review your comment.

4. After discussion with the i18n WG, raise an issue in the repository of the WG that owns the spec. Use the text above these instructions as the starting point for that comment, but add any suggestions that arose from the i18n WG. In the other WG's repo, add an 'i18n-needs-resolution' label to the new issue. If you think any of the participants in layout requirements task force groups would be interested in following the discussion, add also the appropriate i18n-\*lreq label(s).

5. Delete the text below that says 'url_for_the_issue_raised', then add in its place the URL for the issue you raised in the other WG's repository. Do NOT remove the initial '§ '. Do NOT use \[...](...) notation – you need to delete the placeholder, then paste the URL.

6. Remove the 'pending' label, and add a 'needs-resolution' tag to this tracker issue. 

7. If you added an \*lreq label, add the label 'spec-type-issue', add the corresponding language label, and a label to indicate the relevant typographic feature(s), eg. 'i:line_breaking'. The latter represent categories related to the Language Enablement Index, and all start with i:.

8. Edit this issue to **REMOVE ALL THE INSTRUCTIONS & THE PROPOSED COMMENT**, ie. the line below that is '---' and all the text before it to the very start of the issue.

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Received on Monday, 2 May 2022 16:25:36 UTC