docListExceptMerge 2846 third_party/sqlite/src/ext/fts1/fts1.c     docListExceptMerge(pLeft, pRight, pNew);
docListExceptMerge 3951 third_party/sqlite/src/ext/fts2/fts2.c     rc = docListExceptMerge(left.pData, left.nData,