Invalid characters in cookie value

[szepeviktor]

                       ; US-ASCII characters excluding CTLs,
                       ; whitespace DQUOTE, comma, semicolon,
                       ; and backslash

https://datatracker.ietf.org/doc/html/rfc6265#section-4.1.1

... the string does not contain any commas, semicolons, or whitespace ...

https://developer.mozilla.org/en-US/docs/Web/API/Document/cookie

@iamgergo qkie must ensure only these characters get in to value.

... also decode URL-encoded strings in get()

[szepeviktor]

special-key=kört;e; expires=; path=/; SameSite=Lax; Secure=true

special-key=k%C3%B6rt%3Be; expires=; path=/; SameSite=Lax; Secure=true

[iamgergo]

qkie must ensure only these characters get in to value.

Not sure I understand you. We need a regexp that filters some characters? Can you give me an example?

also decode URL-encoded strings in get()

Not in set?