[issue2637] urllib.quote() escapes characters unnecessarily and contrary to docs

[Rodrigo Steinmuller Wanderley]

Rodrigo Steinmuller Wanderley <rodrigoswanderley at gmail.com> added the comment:

> Unreserved characters can be escaped without changing the semantics
> of the URI, but this should not be done unless the URI is being used
> in a context that does not allow the unescaped character to appear.

How can we identify "a context that does not allow the unescaped
character to appear"?

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nosy: +rwanderley

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