Is there a way to use the Unicode tables in the Rust regex crate to match a single char without turning it into a String or &str? It seems like the internals must have a way to do this, but perhaps not exposed? Is there a trick?
e.g., If there was an example that said, "match on a specific codepoint by doing `http://re.is _match(codepoint.encode_utf8(&mut [0; 4]))`" that might be enough. https://play.rust-lang.org/?gist=79cd9455d12d186af21ae685f6f909fb&version=stable …
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I would never have thought to turn a char into a &str that way! I wonder if it means we should add char as_str(&self) -> &str
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Hmm. Don't think that would work. You would need to return an array, but we don't have a type for "fixed size array whose contents are guaranteed to be UTF-8."
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