Function split_weak_matches 

pub fn split_weak_matches(
    index: &LicenseIndex,
    matches: &[LicenseMatch],
) -> (Vec<LicenseMatch>, Vec<LicenseMatch>)

Split matches into good and weak matches.

Weak matches are:

• Matches to rules with “unknown” in their license expression
• Sequence matches with len() <= SMALL_RULE (15) AND coverage <= 25%

Weak matches are set aside before unknown license matching and reinjected later.

Arguments

• matches - Slice of LicenseMatch to split

Returns

Tuple of (good_matches, weak_matches)

Based on Python: split_weak_matches() (match.py:1740-1765)