难题来了！简单的文本替换但要保持居中！

songyc_2015

1. awk -vh="1111111111111111111111" -vj="5" '
   
2.     FNR==1{l=length()}
   
3.     $1~/^┌/||$1~/^└/{s=sprintf("%*s",l,$1);$0=s} #head and tail line
   
4.     /WEL/{s=$2" "$3" "h"!";w=length(s);z=int((l-j-2-w)/2);y=sprintf("%*s%*s%*s",j+1,$1,z+w,s,w%2?z+2:z+1,$NF);$0=y} #welcode line
   
5.     $1~/^\|/&&$0!~/WEL/{s=sprintf("%*s%*s",j+1,$1,l-j-1,$NF);$0=s} #the other line
   
6. 1' d.txt

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