Howdy,
Concerning the quoted-string and quoted-pair BNF, it allows useless escaping of
characters within the quoted string. For instance, "value" can uselessly be
escaped as "\v\a\l\u\e". Are they equivalent?
Thanks,
Brett
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RFC 3261 section 25.1:
A string of text is parsed as a single word if it is quoted using
double-quote marks. In quoted strings, quotation marks (") and
backslashes (\) need to be escaped.
quoted-string = SWS DQUOTE *(qdtext / quoted-pair ) DQUOTE
qdtext = LWS / %x21 / %x23-5B / %x5D-7E / UTF8-NONASCII
The backslash character ("\") MAY be used as a single-character
quoting mechanism only within quoted-string and comment constructs.
Unlike HTTP/1.1, the characters CR and LF cannot be escaped by this
mechanism to avoid conflict with line folding and header separation.
quoted-pair = "\" (%x00-09 / %x0B-0C / %x0E-7F)
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