- match-ids are parsed into CQToken using (EXPR $~ID) syntax
- match-ids get propagated down to all children of WITH and WITHOUT queries
- TODO: match-ids should be stored in COutputToken.m_Highlight (from IndexSet.h, formerly bool m_bHighlight)
- TODO: propagate match-ids through query evaluation process
- match-ids stored in COutputToken.m_Highlight get formatted correctly to JSON output string (JSON mode only)
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