Renames files using `#U[\w\d]{4}` names to their actual unicode character.

unicode_fix.js

var fs = require('fs');

var files = fs.readdirSync('.');
var UNICODE_PATTERN = /#U([\d\w]{4})/gi;

for (var i = 0; i < files.length; i++) {
	var filename = files[i];
	if (!UNICODE_PATTERN.test(filename)) { continue; }

	var fixedFilename = filename.replace(UNICODE_PATTERN, function (match, grp) {
		var codePoint = parseInt(grp, 16);
		return String.fromCharCode(codePoint);
	});
	console.log(filename);
	console.log("=>", fixedFilename);

	fs.renameSync(filename, fixedFilename);
}