"es6 & beyond": ch2, "tagged template literals", cover explicit multiline string literals

[getify]

Illustrate a tagged template literal function that makes multiline string literals require explicit linebreaks instead of assuming them.

function multiline(strings,...values) {
   return Function(`return "${strings.raw.join("").replace(/\n/g,"") }"`)();
}
// TODO: fix this so it adds in the interpolated values
//    (but does not strip linebreaks in those values!)
// TODO: also, don't use the `Function(..)` option; just find
//    actual "\n" occurrences in the raw strings and make them
//    into linebreaks

// WIP:
// function multiline(strings,...values) {
//  var strs = strings.raw.map(function mapper(v){
//      return v.replace(/\n/g,"")
//          .replace(/(^|[^\\]|(?:\\\\)+)((?:\\n)+)/g,function(match,p1,p2){
//              return `${p1}${p2.replace(/\\n/g,"\n")}`;
//          });
//  });
//  return strs.join("");
// }```

```js
console.log( `hello

 world` );
// hello
// 
//  world

console.log( multiline`hello

 world` );
// hello world

console.log( multiline`hello\n
\n
 world` );
// hello
//
//  world