extra (false positive) overlaps issue

[pkuksa]

Extra (false positive) overlaps are reported by giggle search:

Steps to reproduce:

db.bed:
chr1 207799860 207799861
chr1 207799861 207799862
chr1 207799869 207799871
chr1 207799877 207799878
chr1 207799878 207799879

query.bed:
chr1 207799861 207799878

bgzip db.bed
bgzip query.bed
giggle index -i db.bed.gz -o db_index

giggle search -i db_index -q query.bed.gz
#db.bed.gz size:5 overlaps:5

giggle search -i db_index -q query.bed.gz -v -o

Giggle search output: 5 overlaps
##chr1 207799861 207799878
chr1 207799860 207799861 db.bed.gz
chr1 207799861 207799862 db.bed.gz
chr1 207799869 207799871 db.bed.gz
chr1 207799877 207799878 db.bed.gz
chr1 207799878 207799879 db.bed.gz

Extra (false positive) overlaps: 2 overlaps (1 upstream, 1 downstream of the query interval)
chr1 207799860 207799861 db.bed.gz
chr1 207799878 207799879 db.bed.gz

Expected (correct) output for overlap between db.bed and query.bed: 3 overlaps
chr1 207799861 207799862
chr1 207799869 207799871
chr1 207799877 207799878

The extra overlaps are reported for both left and right interval boundaries.
Attached are db and query files used for running.

db.bed.gz
query.bed.gz

Thanks!