cow_qs:qs/1 percent-encode the reserved characters like comma

[blaxmirror]

According to the examples in OpenAPI The query in URI could be something like /users?id=3,4,5. And according to RFC3986:

The purpose of reserved characters is to provide a set of delimiting characters that are distinguishable from other data within a URI. URIs that differ in the replacement of a reserved character with its corresponding percent-encoded octet are not equivalent. Percent- encoding a reserved character, or decoding a percent-encoded octet that corresponds to a reserved character, will change how the URI is interpreted by most applications. Thus, characters in the reserved set are protected from normalization and are therefore safe to be used by scheme-specific and producer-specific algorithms for delimiting data subcomponents within a URI.

I suppose enforcing the percent-encode for reserved characters is not that reasonable. Could you help take a look?

[essen]

cow_qs is the x-www-form-urlencoded format. You probably want the cow_uri module which follows RFC3986.

https://github.com/ninenines/cowlib/blob/master/src/cow_uri.erl#L37