Vertical Indent by llhuii

awk -vFS= '{for(;$j?r=(q=$++j==$1)-($83-=1-2*q)?r" ":r$(m=j):m=substr(r,1>r=j=e,m);)if(!j)print m}'

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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