# (3a) horizontal box drawing -> hyphen
$line =~ s/\x{e2}\x{94}[\x{80}\x{81}\x{84}\x{85}\x{88}\x{89}]/-/g;
$line =~ s/\x{e2}\x{95}[\x{8c}\x{8d}\x{90}]/-/g;
$line =~ s/\x{e2}\x{95}[\x{b4}\x{b6}\x{b8}\x{ba}\x{bc}\x{be}]/-/g;
# (3b) vertical box drawing -> bar
$line =~ s/\x{e2}\x{94}[\x{82}\x{83}\x{86}\x{87}\x{8a}\x{8b}]/|/g;
# (3a) horizontal box drawing -> hyphen
$line =~ s/\x{e2}\x{94}[\x{80}\x{81}\x{84}\x{85}\x{88}\x{89}]/-/g;
$line =~ s/\x{e2}\x{95}[\x{8c}\x{8d}\x{90}]/-/g;
$line =~ s/\x{e2}\x{95}[\x{b4}\x{b6}\x{b8}\x{ba}\x{bc}\x{be}]/-/g;
# (3b) vertical box drawing -> bar
$line =~ s/\x{e2}\x{94}[\x{82}\x{83}\x{86}\x{87}\x{8a}\x{8b}]/|/g;