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. By analogy, i created a folder v0.12.2 and. 汾酒20年，汾酒青花20汾酒多少钱一箱？ 汾酒20年档次怎么样？ 值不值得收藏，值不值得送礼？ 我们经常所说的汾老大就是汾酒 那么 汾酒中哪一款白酒最值得买？ 其中销量最高的黄盖波.
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As the aforementioned rfc does not include any reference of encoding spaces as +, i guess using %20 is the way to go today.
