diff --git a/dlangide_msvc.visualdproj b/dlangide_msvc.visualdproj
index 12fa97d..43e4ed1 100644
--- a/dlangide_msvc.visualdproj
+++ b/dlangide_msvc.visualdproj
@@ -52,6 +52,7 @@
   <otherDMD>0</otherDMD>
   <cccmd>$(CC) -c</cccmd>
   <ccTransOpt>1</ccTransOpt>
+  <addDepImp>0</addDepImp>
   <program>$(DMDInstallDir)windows\bin\dmd.exe</program>
   <imppath>$(ProjectDir)/../dlangui/src $(ProjectDir)/../dlangui/3rdparty $(ProjectDir)/../dlangui/deps/DerelictGL3/source  $(ProjectDir)/../dlangui/deps/DerelictUtil/source  $(ProjectDir)/../dlangui/deps/DerelictFT/source  $(ProjectDir)/../dlangui/deps/DerelictSDL2/source  $(ProjectDir)/../dlangui/deps/libdparse/src $(ProjectDir)/../DerelictLLDB/source</imppath>
   <fileImppath>views views/res views/res/i18n views/res/mdpi views/res/hdpi</fileImppath>
@@ -154,6 +155,7 @@
   <otherDMD>0</otherDMD>
   <cccmd>$(CC) -c</cccmd>
   <ccTransOpt>1</ccTransOpt>
+  <addDepImp>0</addDepImp>
   <program>$(DMDInstallDir)windows\bin\dmd.exe</program>
   <imppath>$(ProjectDir)/../dlangui/src $(ProjectDir)/../dlangui/3rdparty $(ProjectDir)/../dlangui/deps/DerelictGL3/source  $(ProjectDir)/../dlangui/deps/DerelictUtil/source  $(ProjectDir)/../dlangui/deps/DerelictFT/source  $(ProjectDir)/../dlangui/deps/DerelictSDL2/source  $(ProjectDir)/../dlangui/deps/libdparse/src $(ProjectDir)/../DerelictLLDB/source</imppath>
   <fileImppath>views views/res views/res/i18n views/res/mdpi views/res/hdpi</fileImppath>
@@ -256,6 +258,7 @@
   <otherDMD>0</otherDMD>
   <cccmd>$(CC) -c -v</cccmd>
   <ccTransOpt>1</ccTransOpt>
+  <addDepImp>0</addDepImp>
   <program>$(DMDInstallDir)windows\bin\dmd.exe</program>
   <imppath>$(ProjectDir)/../dlangui/src $(ProjectDir)/../dlangui/3rdparty $(ProjectDir)/../dlangui/deps/DerelictGL3/source  $(ProjectDir)/../dlangui/deps/DerelictUtil/source  $(ProjectDir)/../dlangui/deps/DerelictFT/source  $(ProjectDir)/../dlangui/deps/DerelictSDL2/source  $(ProjectDir)/../dlangui/deps/libdparse/src $(ProjectDir)/../DerelictLLDB/source</imppath>
   <fileImppath>views views/res views/res/i18n views/res/mdpi views/res/hdpi</fileImppath>
@@ -358,6 +361,7 @@
   <otherDMD>0</otherDMD>
   <cccmd>$(CC) -c</cccmd>
   <ccTransOpt>1</ccTransOpt>
+  <addDepImp>0</addDepImp>
   <program>$(DMDInstallDir)windows\bin\dmd.exe</program>
   <imppath>$(ProjectDir)/../dlangui/src $(ProjectDir)/../dlangui/3rdparty $(ProjectDir)/../dlangui/deps/DerelictGL3/source  $(ProjectDir)/../dlangui/deps/DerelictUtil/source  $(ProjectDir)/../dlangui/deps/DerelictFT/source  $(ProjectDir)/../dlangui/deps/DerelictSDL2/source  $(ProjectDir)/../dlangui/deps/libdparse/src $(ProjectDir)/../DerelictLLDB/source</imppath>
   <fileImppath>views views/res views/res/i18n views/res/mdpi views/res/hdpi</fileImppath>
@@ -460,6 +464,7 @@
   <otherDMD>0</otherDMD>
   <cccmd>$(CC) -c</cccmd>
   <ccTransOpt>1</ccTransOpt>
+  <addDepImp>0</addDepImp>
   <program>$(DMDInstallDir)windows\bin\dmd.exe</program>
   <imppath>$(ProjectDir)/../dlangui/src $(ProjectDir)/../dlangui/3rdparty $(ProjectDir)/../dlangui/deps/DerelictGL3/source  $(ProjectDir)/../dlangui/deps/DerelictUtil/source  $(ProjectDir)/../dlangui/deps/DerelictFT/source  $(ProjectDir)/../dlangui/deps/DerelictSDL2/source  $(ProjectDir)/../dlangui/deps/libdparse/src $(ProjectDir)/../DerelictLLDB/source</imppath>
   <fileImppath>views views/res views/res/i18n views/res/mdpi views/res/hdpi</fileImppath>
@@ -562,6 +567,7 @@
   <otherDMD>0</otherDMD>
   <cccmd>$(CC) -c -v</cccmd>
   <ccTransOpt>1</ccTransOpt>
+  <addDepImp>0</addDepImp>
   <program>$(DMDInstallDir)windows\bin\dmd.exe</program>
   <imppath>$(ProjectDir)/../dlangui/src $(ProjectDir)/../dlangui/3rdparty $(ProjectDir)/../dlangui/deps/DerelictGL3/source  $(ProjectDir)/../dlangui/deps/DerelictUtil/source  $(ProjectDir)/../dlangui/deps/DerelictFT/source  $(ProjectDir)/../dlangui/deps/DerelictSDL2/source  $(ProjectDir)/../dlangui/deps/libdparse/src $(ProjectDir)/../DerelictLLDB/source</imppath>
   <fileImppath>views views/res views/res/i18n views/res/mdpi views/res/hdpi</fileImppath>
diff --git a/src/dlangide/tools/d/dcdinterface.d b/src/dlangide/tools/d/dcdinterface.d
index 2f4bb12..07ac8ec 100644
--- a/src/dlangide/tools/d/dcdinterface.d
+++ b/src/dlangide/tools/d/dcdinterface.d
@@ -48,7 +48,8 @@ class DCDTask {
     void createRequest() {
         request.sourceCode = cast(ubyte[])_content;
         request.fileName = _filename;
-        request.cursorPosition = _index; 
+        request.cursorPosition = _index;
+        request.importPaths = _importPaths;
     }
     void performRequest() {
         // override
@@ -69,11 +70,27 @@ class DCDTask {
     }
 }
 
+class ModuleCacheAccessor {
+    import dsymbol.modulecache;
+    //protected ASTAllocator _astAllocator;
+    protected ModuleCache _moduleCache;
+    this(in string[] importPaths) {
+        _moduleCache = ModuleCache(new ASTAllocator);
+        _moduleCache.addImportPaths(importPaths);
+    }
+    protected ModuleCache * getModuleCache(in string[] importPaths) {
+        _moduleCache.addImportPaths(importPaths);
+        return &_moduleCache;
+    }
+}
+
 /// Async interface to DCD
 class DCDInterface : Thread {
 
     import dsymbol.modulecache;
-    protected ModuleCache _moduleCache = ModuleCache(new ASTAllocator);
+    //protected ASTAllocator _astAllocator;
+    //protected ModuleCache * _moduleCache;
+    ModuleCacheAccessor _moduleCache;
     protected BlockingQueue!DCDTask _queue;
 
     this() {
@@ -88,13 +105,37 @@ class DCDInterface : Thread {
         join();
         destroy(_queue);
         _queue = null;
+        if (_moduleCache) {
+            destroyModuleCache();
+        }
+    }
+
+    protected void destroyModuleCache() {
+        if (_moduleCache) {
+            Log.d("DCD: destroying module cache");
+            destroy(_moduleCache);
+            _moduleCache = null;
+            /*
+            if (_astAllocator) {
+                _astAllocator.deallocateAll();
+                destroy(_astAllocator);
+                _astAllocator = null;
+            }
+            */
+        }
     }
 
     protected ModuleCache * getModuleCache(in string[] importPaths) {
         // TODO: clear cache if import paths removed or changed
         // hold several module cache instances - make cache of caches
-        _moduleCache.addImportPaths(importPaths);
-        return &_moduleCache;
+        //destroyModuleCache();
+        //if (!_astAllocator)
+        //    _astAllocator = new ASTAllocator;
+        if (!_moduleCache) {
+            _moduleCache = new ModuleCacheAccessor(importPaths);
+        }
+        return _moduleCache.getModuleCache(importPaths);
+        //return _moduleCache;
     }
 
     void threadFunc() {
@@ -104,7 +145,8 @@ class DCDInterface : Thread {
             if (!_queue.get(task))
                 break;
             if (task && !task.cancelled) {
-                Log.d("Execute DCD task");
+                import std.file : getcwd;
+                Log.d("Execute DCD task; current dir=", getcwd);
                 task.execute();
                 Log.d("DCD task execution finished");
             }
@@ -141,7 +183,7 @@ class DCDInterface : Thread {
         override void performRequest() {
             AutocompleteResponse response = getDoc(request, *getModuleCache(_importPaths));
 
-            result.docComments = response.docComments;
+            result.docComments = response.docComments.dup;
             result.result = DCDResult.SUCCESS;
 
             debug(DCD) Log.d("DCD doc comments:\n", result.docComments);
@@ -176,7 +218,7 @@ class DCDInterface : Thread {
         override void performRequest() {
             AutocompleteResponse response = findDeclaration(request, *getModuleCache(_importPaths));
 
-            result.fileName = response.symbolFilePath;
+            result.fileName = response.symbolFilePath.dup;
             result.offset = response.symbolLocation;
             result.result = DCDResult.SUCCESS;
 
diff --git a/src/dlangide/tools/d/deditortool.d b/src/dlangide/tools/d/deditortool.d
index 9e81d68..bde0927 100644
--- a/src/dlangide/tools/d/deditortool.d
+++ b/src/dlangide/tools/d/deditortool.d
@@ -27,12 +27,29 @@ class DEditorTool : EditorTool
         cancelGetCompletions();
     }
 
+    static bool isIdentChar(char ch) {
+        return ch == '_' || (ch >= 'a' && ch <='z') || (ch >= 'A' && ch <='Z') || ((ch & 0x80) != 0);
+    }
+    static bool isAtWord(string content, size_t byteOffset) {
+        if (byteOffset >= content.length)
+            return false;
+        if (isIdentChar(content[byteOffset]))
+            return true;
+        if (byteOffset > 0 && isIdentChar(content[byteOffset - 1]))
+            return true;
+        if (byteOffset + 1 < content.length && isIdentChar(content[byteOffset + 1]))
+            return true;
+        return false;
+    }
+
     DCDTask _getDocCommentsTask;
     override void getDocComments(DSourceEdit editor, TextPosition caretPosition, void delegate(string[]) callback) {
         cancelGetDocComments();
         string[] importPaths = editor.importPaths();
         string content = toUTF8(editor.text);
         auto byteOffset = caretPositionToByteOffset(content, caretPosition);
+        if (!isAtWord(content, byteOffset))
+            return;
         _getDocCommentsTask = _frame.dcdInterface.getDocComments(editor.window, importPaths, editor.filename, content, byteOffset, delegate(DocCommentsResultSet output) {
             if(output.result == DCDResult.SUCCESS) {
                 auto doc = output.docComments;
diff --git a/src/dlangide/ui/settings.d b/src/dlangide/ui/settings.d
index 0cd34c1..6fb134a 100644
--- a/src/dlangide/ui/settings.d
+++ b/src/dlangide/ui/settings.d
@@ -163,7 +163,7 @@ SettingsPage createProjectSettingsPages() {
     SettingsPage dbg = res.addChild("debug", UIString.fromRaw("Run and Debug"d));
     dbg.addStringEdit("debug/run_args", UIString.fromRaw("Command line args"d), "");
     dbg.addDirNameEdit("debug/working_dir", UIString.fromRaw("Working directory"d), "");
-    dbg.addCheckbox("debug/external_console", UIString.fromRaw("Run in external console"d), true);
+    dbg.addCheckbox("debug/external_console", UIString.fromRaw("Run in external console"d), false);
 
     return res;
 }
diff --git a/src/dlangide/workspace/project.d b/src/dlangide/workspace/project.d
index bb2fd47..a4fef92 100644
--- a/src/dlangide/workspace/project.d
+++ b/src/dlangide/workspace/project.d
@@ -547,7 +547,7 @@ class Project : WorkspaceItem {
 
     @property bool runInExternalConsole() {
         // TODO
-        return true;
+        return settings.runInExternalConsole;
     }
 
     ProjectFolder findItems(string[] srcPaths) {
diff --git a/src/dlangide/workspace/projectsettings.d b/src/dlangide/workspace/projectsettings.d
index 2beb259..6f34cf4 100644
--- a/src/dlangide/workspace/projectsettings.d
+++ b/src/dlangide/workspace/projectsettings.d
@@ -67,6 +67,10 @@ class ProjectSettings : SettingsFile {
             return null;
         return cfg;
     }
+
+    @property bool runInExternalConsole() {
+        return debugSettings.getBoolean("external_console", true);
+    }
 }
 
 /// join parameter lists separating with space