Implement ascii codec in Rust #3118
Merged
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I started on this at the beginning of June, so I figured I should finish it and get it in. A large part of the refactoring is just deduplicating decoding logic between utf8 and ascii, since in both the valid subset can just be
push_str()
'd, and the rest passed to the error handler. The only difference is finding the invalid bytes, if any, and figuring out what the error is.