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Optimize thematic break generation #60

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Merged
leynos merged 1 commit into from
Jul 14, 2025
Merged

Optimize thematic break generation #60

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5 changes: 4 additions & 1 deletion src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -235,6 +235,9 @@ static THEMATIC_BREAK_RE: std::sync::LazyLock<Regex> = std::sync::LazyLock::new(
Regex::new(r"^[ ]{0,3}((?:[ \t]*\*){3,}|(?:[ \t]*-){3,}|(?:[ \t]*_){3,})[ \t]*$").unwrap()
});

static THEMATIC_BREAK_LINE: std::sync::LazyLock<String> =
std::sync::LazyLock::new(|| "_".repeat(THEMATIC_BREAK_LEN));

/// Returns `true` if the line is a fenced code block delimiter (e.g., three backticks or "~~~").
///
/// # Examples
Expand Down Expand Up @@ -567,7 +570,7 @@ pub fn format_breaks(lines: &[String]) -> Vec<String> {
}

if !in_code && THEMATIC_BREAK_RE.is_match(line.trim_end()) {
out.push("_".repeat(THEMATIC_BREAK_LEN));
out.push(THEMATIC_BREAK_LINE.clone());
} else {
out.push(line.clone());
}
Expand Down