It would be nice if bgzip had an option to keep the original modification date of the file like gzip does:
$ cp -a original.tsv aa.tsv
# Compressing with gzip keeps original file modification time.
$ gzip aa.tsv
$ ls -l aa.tsv.gz
-rw-rw-r--+ 1 ghuls ghuls 97776 May 22 2018 aa.tsv.gz
$ rm aa.tsv.gz
$ cp -a original.tsv aa.tsv
# Compressing with bgzip does not kees original file modification time.
$ bgzip aa.tsv
$ ls -l aa.tsv.gz
-rw-rw-r--+ 1 ghuls ghuls 94512 Dec 8 14:56 aa.tsv.gz
It would be nice if bgzip had an option to keep the original modification date of the file like gzip does: