microsoft · jdneo · Jul 24, 2026
@@ -27,3 +27,12 @@ connection to the language server. A capability is an *offer of support*, not a
 A gate that exposes in-development features to a subset of users. It is distinct
 from the sub-agent policy: after this change, the availability of sub-agents no
 longer depends on the client preview feature.
+
+### Workspace folder
+A project root associated with a chat so project-scoped prompts, skills, agents,
+and instructions can be discovered. A workspace folder does not imply that the
+project's files are semantically indexed.
+
+### Workspace instructions
+Custom instructions associated with workspace folders and loaded into chat.
+They are distinct from semantic search over project files.
@@ -4,15 +4,21 @@
 package com.microsoft.copilot.eclipse.core.lsp;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 
 import java.io.IOException;
 
+import org.eclipse.core.runtime.preferences.IEclipsePreferences;
+import org.eclipse.core.runtime.preferences.InstanceScope;
 import org.junit.jupiter.api.Test;
 
 import com.microsoft.copilot.eclipse.core.lsp.protocol.InitializationOptions;
 
 class LsStreamConnectionProviderTests {
 
+  private static final String LEGACY_WORKSPACE_CONTEXT_PREFERENCE = "workspaceContextEnabled";
+  private static final String UI_PREFERENCE_NODE = "com.microsoft.copilot.eclipse.ui";
+
   @Test
   void testInitializationOptions() {
     LsStreamConnectionProvider provider = new LsStreamConnectionProvider();
@@ -23,6 +29,27 @@ void testInitializationOptions() {
     assertEquals(LsStreamConnectionProvider.EDITOR_PLUGIN_NAME, options.getEditorPluginInfo().getName());
   }
 
+  @Test
+  void testInitializationIgnoresLegacyWorkspaceContextPreference() {
+    IEclipsePreferences preferences = InstanceScope.INSTANCE.getNode(UI_PREFERENCE_NODE);
+    String previousValue = preferences.get(LEGACY_WORKSPACE_CONTEXT_PREFERENCE, null);
+    preferences.putBoolean(LEGACY_WORKSPACE_CONTEXT_PREFERENCE, true);
+
+    try {
+      LsStreamConnectionProvider provider = new LsStreamConnectionProvider();
+
+      InitializationOptions options = (InitializationOptions) provider.getInitializationOptions(null);
+
+      assertFalse(options.getCopilotCapabilities().isWatchedFiles());
+    } finally {
+      if (previousValue == null) {
+        preferences.remove(LEGACY_WORKSPACE_CONTEXT_PREFERENCE);
+      } else {
+        preferences.put(LEGACY_WORKSPACE_CONTEXT_PREFERENCE, previousValue);
+      }
+    }
+  }
+
   @Test
   void testStartLanguageServer() throws IOException {
     LsStreamConnectionProvider provider = new LsStreamConnectionProvider();

@@ -47,7 +47,6 @@ Require-Bundle: org.eclipse.lsp4e;bundle-version="0.18.1",
  org.eclipse.core.runtime;bundle-version="[3.30.0,4.0.0)",
  org.apache.httpcomponents.client5.httpclient5;bundle-version="5.2.1",
  org.apache.httpcomponents.core5.httpcore5;bundle-version="5.2.3",
- org.eclipse.jgit;bundle-version="6.8.0",
  org.osgi.service.event;bundle-version="1.4.1",
  org.eclipse.e4.core.services;bundle-version="2.4.200",
  org.eclipse.e4.core.contexts;bundle-version="1.12.400"
@@ -25,7 +25,6 @@ private Constants() {
   public static final String ENABLE_STRICT_SSL = "enableStrictSsl";
   public static final String PROXY_KERBEROS_SP = "proxyKerberosSp";
   public static final String GITHUB_ENTERPRISE = "githubEnterprise";
-  public static final String WORKSPACE_CONTEXT_ENABLED = "workspaceContextEnabled";
   public static final String AGENT_MAX_REQUESTS = "agentMaxRequests";
   public static final String ENABLE_SKILLS = "enableSkills";
   public static final String TRANSCRIPT_SUBDIR = ".copilot/eclipse";

@@ -3,9 +3,6 @@
 
 package com.microsoft.copilot.eclipse.core;
 
-import org.eclipse.core.runtime.preferences.IEclipsePreferences;
-import org.eclipse.core.runtime.preferences.InstanceScope;
-
 /**
  * Class to manage feature flags for the Copilot plugin. This class allows enabling or disabling features.
  */
@@ -108,23 +105,6 @@ public void setClientPreviewFeatureEnabled(boolean clientPreviewFeatureEnabled)
     this.clientPreviewFeatureEnabled = clientPreviewFeatureEnabled;
   }
 
-  /**
-   * Checks if the workspace context is enabled.
-   *
-   * @return true if the workspace context is enabled, false otherwise.
-   */
-  public static boolean isWorkspaceContextEnabled() {
-    // Directly access the instance scope of Eclipse preferences, which are preferences that are specific to the
-    // current workspace. So the code won't need to involve any component from the UI plugin.
-    // The file name for the preferences is "com.microsoft.copilot.eclipse.ui.prefs"
-    IEclipsePreferences uiPrefs = InstanceScope.INSTANCE.getNode("com.microsoft.copilot.eclipse.ui");
-    if (uiPrefs != null) {
-      return uiPrefs.getBoolean(Constants.WORKSPACE_CONTEXT_ENABLED, false);
-    }
-
-    return false;
-  }
-
   /**
    * Checks if the custom agent is enabled.
    * Custom agent is enabled only if the organization policy allows it.

@@ -23,7 +23,6 @@
 import org.eclipse.lsp4j.ProgressParams;
 import org.eclipse.lsp4j.ShowDocumentParams;
 import org.eclipse.lsp4j.ShowDocumentResult;
-import org.eclipse.lsp4j.WorkspaceFolder;
 import org.eclipse.lsp4j.jsonrpc.messages.ResponseError;
 import org.eclipse.lsp4j.jsonrpc.messages.ResponseErrorCode;
 import org.eclipse.lsp4j.jsonrpc.services.JsonNotification;
@@ -54,8 +53,6 @@
 import com.microsoft.copilot.eclipse.core.lsp.protocol.FindFilesResult;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.FindTextInFilesParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.FindTextInFilesResult;
-import com.microsoft.copilot.eclipse.core.lsp.protocol.GetWatchedFilesRequest;
-import com.microsoft.copilot.eclipse.core.lsp.protocol.GetWatchedFilesResponse;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.InvokeClientToolConfirmationParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.InvokeClientToolParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.LanguageModelToolResult;
@@ -80,8 +77,6 @@ public class CopilotLanguageClient extends LanguageClientImpl {
   private static final String HTTP = "http"; //$NON-NLS-1$
   private static final String COPILOT_FILE_ENCODING_SECTION = "copilot.file.encoding"; //$NON-NLS-1$
 
-  private WatchedFileManager watchedFileManager;
-
   private IEventBroker eventBroker;
 
   private static final String SIGNUP_URL = "https://github.com/github-copilot/signup";
@@ -186,20 +181,6 @@ public CompletableFuture<Object[]> confirmClientTool(InvokeClientToolConfirmatio
     });
   }
 
-  // TODO: Should remove workspace-root folder as the projects are not directly under it in Eclipse, and can cause
-  // confusion in CLS.
-  @Override
-  public CompletableFuture<List<WorkspaceFolder>> workspaceFolders() {
-    // Ideally, we should return each IProject as a workspace folder, but given that when
-    // creating a new conversation or new conversation turn, the uri of the workspace folder
-    // is required to use the @project (or @workspace) agent. There is no easy way to guess which
-    // IProject should be used. So we are returning the workspace root as a single workspace folder.
-    final WorkspaceFolder folder = new WorkspaceFolder();
-    folder.setUri(PlatformUtils.getWorkspaceRootUri());
-    folder.setName("workspace-root"); // $NON-NLS-1$
-    return CompletableFuture.completedFuture(List.of(folder));
-  }
-
   @Override
   public CompletableFuture<List<Object>> configuration(ConfigurationParams params) {
     return CompletableFuture.supplyAsync(() -> {
@@ -223,17 +204,6 @@ public CompletableFuture<List<Object>> configuration(ConfigurationParams params)
     });
   }
 
-  /**
-   * Get the conversation context for the given request.
-   */
-  @JsonRequest("copilot/watchedFiles")
-  public CompletableFuture<GetWatchedFilesResponse> getWatchedFiles(GetWatchedFilesRequest params) {
-    if (watchedFileManager == null) {
-      watchedFileManager = new WatchedFileManager();
-    }
-    return watchedFileManager.getWatchedFilesWithProgress(params);
-  }
-
   /**
    * Notify when mcp server/tool change.
    */

@@ -22,7 +22,6 @@
 import com.microsoft.copilot.eclipse.core.lsp.protocol.CheckStatusParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.CompletionParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.CompletionResult;
-import com.microsoft.copilot.eclipse.core.lsp.protocol.ConversationAgent;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.ConversationCodeCopyParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.ConversationCreateParams;
 import com.microsoft.copilot.eclipse.core.lsp.protocol.ConversationDestroyParams;
@@ -223,12 +222,6 @@ public interface CopilotLanguageServer extends LanguageServer {
   @JsonRequest("copilot/models")
   CompletableFuture<CopilotModel[]> listModels(NullParams param);
 
-  /**
-   * Get the conversation agents.
-   */
-  @JsonRequest("conversation/agents")
-  CompletableFuture<ConversationAgent[]> listAgents(NullParams params);
-
   /**
    * Notify the code acceptance.
    */