rust/hg-core/src/matchers.rs

44761:ee0790b67c45

    // # Safety
    // This is safe because we escaped all non-ASCII bytes.
    let pattern_string = unsafe { String::from_utf8_unchecked(escaped_bytes) };
    let re = regex::bytes::RegexBuilder::new(&pattern_string)
        .unicode(false)
        .build()
        .map_err(|e| PatternError::UnsupportedSyntax(e.to_string()))?;

    Ok(move |path: &HgPath| re.is_match(path.as_bytes()))
}

44762:b15a37d85dbe

    // # Safety
    // This is safe because we escaped all non-ASCII bytes.
    let pattern_string = unsafe { String::from_utf8_unchecked(escaped_bytes) };
    let re = regex::bytes::RegexBuilder::new(&pattern_string)
        .unicode(false)
        // Big repos with big `.hgignore` will hit the default limit and
        // incur a significant performance hit. One repo's `hg status` hit
        // multiple *minutes*.
        .dfa_size_limit(50 * (1 << 20))
        .build()
        .map_err(|e| PatternError::UnsupportedSyntax(e.to_string()))?;

    Ok(move |path: &HgPath| re.is_match(path.as_bytes()))
}