cookie: reject cookie names or content with TAB characters #9659
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TABs in name and content seem allowed by RFC 6265: "the algorithm strips leading and trailing whitespace from the cookie name and value (but maintains internal whitespace)"
Cookies with TABs in the names are rejected by Firefox and Chrome.
TABs in content are stripped out by Firefox, while Chrome discards the whole cookie.
TABs in cookies also cause issues in saved netscape cookie files.