Hackage Link: https://hackage.haskell.org/package/ascii-art-to-unicode
Small CLI program to convert ASCII box drawings to unicode. Inspired by svgbob and The Monads Hidden Behind Every Zipper.
aa2u > outfile # Reads from stdin
aa2u < infile # Prints to stdout
aa2u infile # Input file as argument works as well
aa2u < infile > outfile # Convert a file