Implement noop completion, fixes #691.

lib/commands/completion.js

@@ -0,0 +1,31 @@
+var Logger = require('bower-logger');
+var cli = require('../util/cli');
+
+function completion(config) {
+    var logger = new Logger();
+
+    process.nextTick(function () {
+        logger.emit('end');
+    });
+
+    return logger;
+}
+
+// -------------------
+
+completion.line = function (argv) {
+    var options = completion.options(argv);
+    var name = options.argv.remain[1];
+
+    return completion(name);
+};
+
+completion.options = function (argv) {
+    return cli.readOptions(argv);
+};
+
+completion.completion = function () {
+    // TODO:
+};
+
+module.exports = completion;

lib/commands/index.js

@@ -1,5 +1,6 @@
 module.exports = {
     cache: require('./cache'),
+    completion: require('./completion'),
     help: require('./help'),
     home: require('./home'),
     info: require('./info'),