urlEncodeVars does not properly encode arrays

[tfausak]

When urlEncodeVars encounters keys with multiple values, it separates the values with commas. For example:

urlEncodeVars [("k", "1"), ("k", "2")]
-- "k=1,2"

In my experience, the correct way to encode arrays like this is to append [] to the key and pass each element as a key-value pair. For instance:

urlEncode "[]"
-- "%5B%5D"
urlEncodeVars' [("k", "1"), ("k", "2")]
-- "k%5B%5D=1k%5B%5D=2"

Is it possible to change the behavior of urlEncodeVars to match my expectation?

[tfausak]

I worked around this by using urlEncode directly and adding the square brackets myself. If nobody else was surprised by this behavior in the (at least) six years since urlEncodeVars was introduced, I can deal with it.