Use ":" to separate package and executable name in pub global run.

sdk/lib/_internal/pub/lib/src/command/global_run.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library pub.command.global_run;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:barback/barback.dart';
 import 'package:path/path.dart' as path;
 import 'package:stack_trace/stack_trace.dart';
 
 import '../barback/asset_environment.dart';
 import '../command.dart';
 import '../entrypoint.dart';
 import '../executable.dart';
 import '../exit_codes.dart' as exit_codes;
 import '../io.dart';
 import '../log.dart' as log;
 import '../utils.dart';
 
 /// Handles the `global run` pub command.
 class GlobalRunCommand extends PubCommand {
   bool get takesArguments => true;
   bool get allowTrailingOptions => false;
   String get description =>
       "Run an executable from a globally activated package.";
-  String get usage => "pub global run <package> <executable> [args...]";
+  String get usage => "pub global run <package>:<executable> [args...]";
 
   Future onRun() {
     if (commandOptions.rest.isEmpty) {
-      usageError("Must specify a package and executable to run.");
-    }
-
-    if (commandOptions.rest.length == 1) {
       usageError("Must specify an executable to run.");
     }
 
-    var package = commandOptions.rest[0];
-    var executable = commandOptions.rest[1];
-    var args = commandOptions.rest.skip(2);
+    if (!commandOptions.rest[0].contains(":")) {
+      // TODO(rnystrom): Allow "foo" as a synonym for "foo:foo"?

[nweiz, 2014/07/17 07:15:10]

+1

+      usageError("Must specify a package from which to run the executable.");
+    }
+
+    var parts = split1(commandOptions.rest[0], ":");
+    var package = parts[0];
+    var executable = parts[1];
+    var args = commandOptions.rest.skip(1).toList();
 
     return globals.find(package).then((entrypoint) {
       return runExecutable(this, entrypoint, package, executable, args);
     }).then(flushThenExit);
   }
 }