Nontrailing separators do not spark joy

This is valid JSON: { "a": 1, "b": 2, "c": 3 } This is invalid JSON: { "a": 1, "b": 2, "c": 3, } The difference is the last comma. The JSON grammar specifies that a comma can separate two members of an object but not postcede ("trail") a member. I think this was a design mistake. Say we want to add two new keys to the struct, one before the "a" member and one after the "c" member. Here's…

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