[issue20116] urlparse.parse_qs should take argument for query separator

[Luiz Poleto]

Luiz Poleto added the comment:

If this bug is to be moved forward, we should consider this:

The RFC 3986 defines that a query can have any of these characters:
/?:@-._~!$&'()*+,;= ALPHA DIGIT %HH (encoded octet)

But does not define how the data should be interpreted, leaving that to the naming authority and the URI schema (although http/https doesn't specify it as well; see RFC 7230).

OTOH, parse_qs (both on 2.x and 3.x) is very specific that the query string is of type application/x-www-form-urlencoded; which defines that the name is separated from the value by '=' and name/value pairs are separated from each other by '&', although the use of ';' to separate the pairs is only suggested to be supported by HTTP server implementors.

It could be that adding support to the characters specified by RFC 3986 pose as a challenge since there is no fixed schema and they can be freely used by the naming authority so perhaps we could add a parameter to enable/disable ';' as a pair separator?

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nosy: +poleto

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