s/^(\t+)/' ' x (4 * length $1)/e;


##</code><code>##

$s =~ s/(^|\G)\t/    /g;


##</code><code>##

$s =~ s/\G\t/    /g;


##</code><code>##

($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,