strip.js

//
// stripPath('/foo/bar/baz', ['x', 'foo', 'bar']) => 'bar/baz'
//
var stripPath = λ(path, names) {                                                                                                                               
    var f = R.flip(R.strLastIndexOf)(path);                                                                                                                    
    var indexList = R.map( λ(name) {                                                                                                                           
        return {                                                                                                                                               
            n: name,                                                                                                                                           
            pos: f(name)                                                                                                                                       
        };                                                                                                                                                     
    }, names);                                                                                                                                                 
    var cmp = function(x) {                                                                                                                                    
        return x.pos;                                                                                                                                          
    };                                                                                                                                                         
    var lastComponent = R.maxBy(cmp, indexList);                                                                                                               
    return R.substringFrom(lastComponent.pos, path);                                                                                                           
};