isIgnoreEmpty    145775 ext/sqlite3/libsqlite/sqlite3.c   int isIgnoreEmpty =  (pCsr->pFilter->flags & FTS3_SEGMENT_IGNORE_EMPTY);
isIgnoreEmpty    145842 ext/sqlite3/libsqlite/sqlite3.c     assert( isIgnoreEmpty || (isRequirePos && !isColFilter) );
isIgnoreEmpty    145844 ext/sqlite3/libsqlite/sqlite3.c      && !isIgnoreEmpty 
isIgnoreEmpty    145888 ext/sqlite3/libsqlite/sqlite3.c         if( !isIgnoreEmpty || nList>0 ){