A better Rust ATProto crate
fixed tag regex
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crates/jacquard/src/richtext.rs
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crates/jacquard/src/richtext.rs
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});
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static TAG_REGEX: LazyLock<Regex> = LazyLock::new(|| {
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// Simplified version - full unicode handling would need more work
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Regex::new(r"(^|\s)[#＃]([^\s\x{00AD}\x{2060}\x{200A}\x{200B}\x{200C}\x{200D}]+)").unwrap()
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// Pattern: (^|\s)[#＃](prefix* core+ suffix*)?
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//
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// - prefix: [^\s\u{00AD}...]* - any chars except spaces/zero-width (optional)
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// - core: [^\d\s\p{P}\u{00AD}...]+ - at least one char that's not digit/space/punct/zero-width (required)
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// - suffix: [^\s\u{00AD}...]* - any chars except spaces/zero-width (optional)
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//
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// Zero-width chars excluded: \u{00AD} (soft hyphen), \u{2060} (word joiner),
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// \u{200A}-\u{200D} (hair space, zero-width space/joiner/non-joiner), \u{20e2} (combining mark)
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//
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// Note: emoji modifier (\ufe0f) is filtered in detect_tags() since Rust regex
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// doesn't support negative lookahead
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Regex::new(
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r"(^|\s)[#＃]([^\s\u{00AD}\u{2060}\u{200A}\u{200B}\u{200C}\u{200D}\u{20e2}]*[^\d\s\p{P}\u{00AD}\u{2060}\u{200A}\u{200B}\u{200C}\u{200D}\u{20e2}]+[^\s\u{00AD}\u{2060}\u{200A}\u{200B}\u{200C}\u{200D}\u{20e2}]*)?"
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).unwrap()
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});
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static MARKDOWN_LINK_REGEX: LazyLock<Regex> =
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let mut facets = Vec::new();
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for cap in TAG_REGEX.captures_iter(text) {
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let tag_match = cap.get(2).unwrap();
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// capture group 2 is optional, skip if empty (just # with nothing after)
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let tag_match = match cap.get(2) {
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Some(m) => m,
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None => continue,
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};
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let tag_str = tag_match.as_str();
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// Filter out tags starting with emoji modifier (since regex can't do negative lookahead)
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if tag_str.starts_with('\u{fe0f}') {
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continue;
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}
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// Calculate trimmed length after stripping trailing punctuation
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let trimmed_len = if let Some(trimmed) = TRAILING_PUNCT_REGEX.find(tag_str) {