CutN fails when sequence begins with Ns
hloucks opened this issue · comments
Using seqtk version 1.4-r122 seqt fails to identify Ns at the beginning of the contig
Example
>test
NNNNNNNATCTA
>test2
AATTCNNNA
seqtk cutN -g -n1 test.fa
test2 5 8
seqtk gap -l 1 test.fa
test 0 7
test2 5 8
CutN identifies the stretch of Ns in the second contig but not if the first which begins with Ns. Seqtk gap works as expected.