I am still very confused by the use of the bcftools isec -n flag.
According to the manual: https://samtools.github.io/bcftools/bcftools.html#isec):
-n, --nfiles [+-=]INT|~BITMAP output positions present in this many (=), this many or more (+), this many or fewer (-), or the exact same (~) files
But after a few trials, I have realized that -n+2 and -n=10 with an input of 10 files do not output the same results.
Has anyone any clues about the use of these operator?