History of ReferenceIndex::clear 1 change

In src/references.ts, lines 40–42 on e049507481420c42ff55ba0aa59bc739b1ab57b4c2aa91c34edd0a7760847152. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 40,42:src/references.ts.