UnityC#.sublime-completionsを作って保存する。

CreateCSharpSublimeCompletions.cs

using UnityEngine;
using UnityEditor;
using System.Reflection;
public class CreateCSharpSublimeCompletions
{
    private static System.Text.StringBuilder sb = new System.Text.StringBuilder ();

    [MenuItem("File/Create UnityC#.sublime-completions/All")]
    static void WriteAll ()
    {
        WriteFirstHalf ();
        AppendPublicMembersOfUnityEngine ();
        AppendPublicMembersOfUnityEditor ();
        WriteSecondHalf ();
    }

    [MenuItem("File/Create UnityC#.sublime-completions/UnityEngine")]
    static void WriteEngine ()
    {
        WriteFirstHalf ();
        AppendPublicMembersOfUnityEngine ();
        WriteSecondHalf ();

    }
    [MenuItem("File/Create UnityC#.sublime-completions/UnityEditor")]
    static void WriteEditor ()
    {
        WriteFirstHalf ();
        AppendPublicMembersOfUnityEditor ();
        WriteSecondHalf ();
    }


    //=======================================

    static void AppendPublicMembersOfUnityEngine ()
    {
        AppendPublicMembers (Assembly.Load ("UnityEngine.dll"));
    }
    static void AppendPublicMembersOfUnityEditor ()
    {
        AppendPublicMembers (Assembly.Load ("UnityEditor.dll"));
    }

    static void WriteFirstHalf ()
    {
        sb = new System.Text.StringBuilder ();
        sb.AppendLine ("{");
        sb.AppendLine (@"   ""scope"": ""source.cs"",");
        sb.AppendLine (@"   ""completions"":");
        sb.AppendLine (@"   [");
    }
    static void WriteSecondHalf ()
    {
        sb = sb.Remove (sb.ToString ().LastIndexOf (','), 1);

        sb.AppendLine (@"   ]");
        sb.AppendLine ("}");

        string path = "";
        if (Application.platform == RuntimePlatform.OSXEditor)
            path = "/Users/{0}/Library/Application Support/Sublime Text 2/Packages/Unity3D/UnityC#.sublime-completions";
        else
            path = System.Environment.GetFolderPath (System.Environment.SpecialFolder.ApplicationData) + "\\Sublime Text 2\\Packages\\Unity3D\\UnityC#.sublime-completions";


        System.IO.File.WriteAllText (string.Format (path, System.Environment.UserName), sb.ToString ());
    }

    static void AppendPublicMembers (Assembly assembly)
    {
        foreach (System.Type type in assembly.GetTypes()) {
            if (type.IsPublic) {
                string result = type.ToString ();
                result = result.Split ('.') [result.Split ('.').Length - 1];
                AppendLine (sb, type.Namespace);
                AppendLine (sb, result);
            }
        }
    }
    static void AppendLine (System.Text.StringBuilder sb, string text)
    {
        text = "\t\t{ \"trigger\": \"{0}\" , \"contents\": \"{0}\"},".Replace ("{0}", text);
        if (!sb.ToString ().Contains (text))
            sb.AppendLine (text);
    }
}

保存先

Mac

~/Library/Application Support/Sublime Text 2/Packages/Unity3D/UnityC#.sublime-completions

Windows

C:\Users%USERNAME%\AppData\Roaming\Sublime Text 2\Packages\Unity3D\UnityC#.sublime-completions