Braille Translator Challenge

I decided to look at the possibility of extending my conversion to Braille to cover multiline phrases.

The thing I like about using Lambda solutions is that such changes can sometimes be made based upon very localised edits.

WRITEλ = LAMBDA(message, 
//  This function reads a text message and return the corresponding Braille letters
    LET(
        chars,   MAPλ(message, LAMBDA(line, REGEXEXTRACT(line,".",1))),
        charLst, TILECHARλ(BrailleTable, 4, 2),
        Braileϑ, TILEλ(BrailleTable, 4, 2),
        return,  XLOOKUP(chars,charLst,Braileϑ, THUNK("")),
        EVALTHUNKARRλ(return)
    )
);

The changes required were to use MAPλ to allow REGEXEXTRACT to return multiple rows of characters and to allow for a null thunk to be returned for a missing matches.