Taking advantage of function->string

v8-files.js

function files(where, opts) {                                                                       
    /***                                                                                            
    Generates a list of files from the output of `ls`.                                              
                                                                                                    
    Arguments:                                                                                      
    where -- From where to list files (default '.')                                                 
    opts -- Optional parameters that can be passed to `ls`.                                         
    ***/                                                                                            
    where = where || ".";                                                                           
    opts = opts || [];                                                                           
    calling = opts.length ? String.format("ls %s %s", opts.join(""), where) :
                            String.format("ls %s", where);                                                                               
    return s8.cmd(calling).split("\n");                                                             
}

v8-function-string.js

function help(fun) {    
    /***                                                                                            
    Prints the help text of a function.                                          
                                                                                                    
    Arguments:                                                                                      
    fun -- The function (or alternatively an object with help defined)                              
    ***/                                                                                
    if (fun === undefined)                                                                          
        return stdout.writeln("What function do you need help with?");                              
                                                                                                    
    if (!(fun instanceof Function)) {                                                               
        if (fun.help)                                                                               
            return stdout.writeln(fun.help);                                                        
        return stdout.writeln("I can not help you with that topic.");                               
    }                                                                                               
                                                                                                    
    var sf = new String(fun);                                                                       
    var matches = sf.match(/\/\*\*\*([\s\S]*)\*\*\*\//m);                                           
                                                                                                    
    if (matches)                                                                                    
        return stdout.writeln(matches[1]);                                                          
                                                                                                    
    return stdout.writeln("I can not help you with that function.");                                
}