As the aforementioned rfc does not include any reference of encoding spaces as +, i guess using %20 is the way to go today. @metabyter i think it is more technically correct to phrase the question as in a url, should i encode the spaces using %20 or + in the query part of a url? because while the example. By analogy, i created a folder v0.12.2 and.
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I am interested in knowing why '%20' is used as a space in urls, particularly why %20 was used and why we even need it in the first place.