in reply to merge lines removing duplicates in a file

What did you try? How did it fail?

Also, why is NC_017523 printed with :1 when it always contains :0 in the sample input?

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

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In Section Seekers of Perl Wisdom