Re: [whatwg/url] Confusion about pipe characters in paths (Issue #852)

alwinb left a comment (whatwg/url#852)

My suggestion is to include a table similar to the one attached; for describing all the percent encode sets, as well as error correction and validation for all individual code points in percent-encoded components. 

Key:

- v: valid
- E: (Escape) valid but nonetheless percent encoded
- T: (Tolerte) invalid, but nonetheless left untouched by the parser -- resulting in an invalid URL as output
- F: (Fixed) invalid and fixed by parser (and setters) by percent encoding the occurrence
- R: (Reject) Invalid and causing a hard error, won't end up in output URLs.

The apostrophe in the query is special cased for 'non-special' URLs where it is left untouched (ie. v:valid)

'Other control' here includes unicode non-chars and surrogates.

I do hope the table is fully up to date, I have not checked if there have been any recent changes.

<img width="603" alt="Image" src="https://github.com/user-attachments/assets/c6576764-2954-4050-b993-0266e5162302" />

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