fix: escape invalid UTF-8 bytes in debug output for Match #1203
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src/regex/bytes.rs
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| fmt.field("bytes", &s); | ||
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| let bytes = self.as_bytes(); | ||
| let formatted = bytes_to_string_with_invalid_utf8_escaped(bytes); |
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Can you use regex_automata::util::escape::DebugHaystack instead? It will basically do what you have here, but will only escape invalid UTF-8. What you've implemented here will escape not only invalid UTF-8, but all UTF-8 that isn't ASCII. (I think that would be a cure worse than the disease.)
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Modified to use DebugHaystack. I thought there would be such a feature but couldn't find it. Thanks for your suggestion. 88112b3
| debug_str, | ||
| r#"Match { start: 7, end: 13, bytes: "\\xFFworld" }"# | ||
| ); | ||
| } |
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Please add some tests with non-ASCII UTF-8.
src/regex/bytes.rs
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| fn bytes_to_string_with_invalid_utf8_escaped(bytes: &[u8]) -> String { | ||
| let mut result = String::new(); | ||
| for &byte in bytes { | ||
| if byte.is_ascii() { |
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outputs valid UTF-8 characters as is
This is why what you said isn't accurate here. This only outputs ASCII characters as-is. Everything else, including valid UTF-8 that isn't ASCII, is emitted as escape byte sequences.
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This PR is on crates.io in |
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Description
Debugimplementation forMatchhas been updated to useDebugHaystack. This provides a way to handle the formatting of&[u8]for debug output.\xHH).\t,\n) are properly escaped.