diff --git a/src/vs/editor/common/config/commonEditorConfig.ts b/src/vs/editor/common/config/commonEditorConfig.ts
index cc6f7e769fdd2..607a21568943b 100644
--- a/src/vs/editor/common/config/commonEditorConfig.ts
+++ b/src/vs/editor/common/config/commonEditorConfig.ts
@@ -301,7 +301,7 @@ class InternalEditorOptionsHelper {
 			selectionClipboard: toBoolean(opts.selectionClipboard),
 			hover: toBoolean(opts.hover),
 			contextmenu: toBoolean(opts.contextmenu),
-			quickSuggestions: toBoolean(opts.quickSuggestions),
+			quickSuggestions: typeof opts.quickSuggestions === 'object' ? { other: true, ...opts.quickSuggestions } : toBoolean(opts.quickSuggestions),
 			quickSuggestionsDelay: toInteger(opts.quickSuggestionsDelay),
 			parameterHints: toBoolean(opts.parameterHints),
 			iconsInSuggestions: toBoolean(opts.iconsInSuggestions),
@@ -723,9 +723,31 @@ const editorConfiguration: IConfigurationNode = {
 			'description': nls.localize('mouseWheelScrollSensitivity', "A multiplier to be used on the `deltaX` and `deltaY` of mouse wheel scroll events")
 		},
 		'editor.quickSuggestions': {
-			'type': 'boolean',
+			'anyOf': [
+				'boolean',
+				{
+					type: 'object',
+					properties: {
+						strings: {
+							type: 'boolean',
+							default: false,
+							description: nls.localize('quickSuggestions.strings', "Enable quick suggestions inside strings.")
+						},
+						comments: {
+							type: 'boolean',
+							default: false,
+							description: nls.localize('quickSuggestions.comments', "Enable quick suggestions inside comments.")
+						},
+						other: {
+							type: 'boolean',
+							default: true,
+							description: nls.localize('quickSuggestions.other', "Enable quick suggestions outside of strings and comments.")
+						},
+					}
+				}
+			],
 			'default': DefaultConfig.editor.quickSuggestions,
-			'description': nls.localize('quickSuggestions', "Controls if quick suggestions should show up or not while typing")
+			'description': nls.localize('quickSuggestions', "Controls if suggestions should automatically show up while typing")
 		},
 		'editor.quickSuggestionsDelay': {
 			'type': 'integer',
diff --git a/src/vs/editor/common/config/defaultConfig.ts b/src/vs/editor/common/config/defaultConfig.ts
index e8faee7136ea2..8c178305c52e1 100644
--- a/src/vs/editor/common/config/defaultConfig.ts
+++ b/src/vs/editor/common/config/defaultConfig.ts
@@ -86,7 +86,7 @@ class ConfigClass implements IConfiguration {
 			hover: true,
 			contextmenu: true,
 			mouseWheelScrollSensitivity: 1,
-			quickSuggestions: true,
+			quickSuggestions: { other: true, comments: false, strings: false },
 			quickSuggestionsDelay: 10,
 			parameterHints: true,
 			iconsInSuggestions: true,
diff --git a/src/vs/editor/common/editorCommon.ts b/src/vs/editor/common/editorCommon.ts
index 3c742c911b2d0..3390af3d04a54 100644
--- a/src/vs/editor/common/editorCommon.ts
+++ b/src/vs/editor/common/editorCommon.ts
@@ -421,7 +421,7 @@ export interface IEditorOptions {
 	 * Enable quick suggestions (shadow suggestions)
 	 * Defaults to true.
 	 */
-	quickSuggestions?: boolean;
+	quickSuggestions?: boolean | { other: boolean, comments: boolean, strings: boolean };
 	/**
 	 * Quick suggestions show delay (in ms)
 	 * Defaults to 500 (ms)
@@ -1005,7 +1005,7 @@ export class EditorContribOptions {
 	readonly selectionClipboard: boolean;
 	readonly hover: boolean;
 	readonly contextmenu: boolean;
-	readonly quickSuggestions: boolean;
+	readonly quickSuggestions: boolean | { other: boolean, comments: boolean, strings: boolean };
 	readonly quickSuggestionsDelay: number;
 	readonly parameterHints: boolean;
 	readonly iconsInSuggestions: boolean;
@@ -1032,7 +1032,7 @@ export class EditorContribOptions {
 		selectionClipboard: boolean;
 		hover: boolean;
 		contextmenu: boolean;
-		quickSuggestions: boolean;
+		quickSuggestions: boolean | { other: boolean, comments: boolean, strings: boolean };
 		quickSuggestionsDelay: number;
 		parameterHints: boolean;
 		iconsInSuggestions: boolean;
@@ -1055,7 +1055,7 @@ export class EditorContribOptions {
 		this.selectionClipboard = Boolean(source.selectionClipboard);
 		this.hover = Boolean(source.hover);
 		this.contextmenu = Boolean(source.contextmenu);
-		this.quickSuggestions = Boolean(source.quickSuggestions);
+		this.quickSuggestions = source.quickSuggestions;
 		this.quickSuggestionsDelay = source.quickSuggestionsDelay || 0;
 		this.parameterHints = Boolean(source.parameterHints);
 		this.iconsInSuggestions = Boolean(source.iconsInSuggestions);
@@ -1084,7 +1084,7 @@ export class EditorContribOptions {
 			this.selectionClipboard === other.selectionClipboard
 			&& this.hover === other.hover
 			&& this.contextmenu === other.contextmenu
-			&& this.quickSuggestions === other.quickSuggestions
+			&& objects.equals(this.quickSuggestions, other.quickSuggestions)
 			&& this.quickSuggestionsDelay === other.quickSuggestionsDelay
 			&& this.parameterHints === other.parameterHints
 			&& this.iconsInSuggestions === other.iconsInSuggestions
diff --git a/src/vs/editor/contrib/suggest/common/suggestModel.ts b/src/vs/editor/contrib/suggest/common/suggestModel.ts
index a002e184f2086..5ac02485b3434 100644
--- a/src/vs/editor/contrib/suggest/common/suggestModel.ts
+++ b/src/vs/editor/contrib/suggest/common/suggestModel.ts
@@ -11,7 +11,7 @@ import Event, { Emitter } from 'vs/base/common/event';
 import { IDisposable, dispose } from 'vs/base/common/lifecycle';
 import { TPromise } from 'vs/base/common/winjs.base';
 import { ICommonCodeEditor, ICursorSelectionChangedEvent, CursorChangeReason, IModel, IPosition, IWordAtPosition } from 'vs/editor/common/editorCommon';
-import { ISuggestSupport, SuggestRegistry } from 'vs/editor/common/modes';
+import { ISuggestSupport, SuggestRegistry, StandardTokenType } from 'vs/editor/common/modes';
 import { Position } from 'vs/editor/common/core/position';
 import { provideSuggestionItems, getSuggestionComparator, ISuggestionItem } from './suggest';
 import { CompletionModel } from './completionModel';
@@ -260,14 +260,42 @@ export class SuggestModel implements IDisposable {
 
 			// trigger 24x7 IntelliSense when idle, enabled, when cursor
 			// moved RIGHT, and when at a good position
-			if (this.editor.getConfiguration().contribInfo.quickSuggestions
-				&& prevPosition.isBefore(this.currentPosition)) {
+			if (this.editor.getConfiguration().contribInfo.quickSuggestions !== false
+				&& prevPosition.isBefore(this.currentPosition)
+			) {
 
 				this.cancel();
 
 				if (LineContext.shouldAutoTrigger(this.editor)) {
 					this.triggerAutoSuggestPromise = TPromise.timeout(this.quickSuggestDelay);
 					this.triggerAutoSuggestPromise.then(() => {
+						const model = this.editor.getModel();
+						const pos = this.editor.getPosition();
+
+						if (!model) {
+							return;
+						}
+						// validate enabled now
+						const { quickSuggestions } = this.editor.getConfiguration().contribInfo;
+						if (quickSuggestions === false) {
+							return;
+						} else if (quickSuggestions === true) {
+							// all good
+						} else {
+							model.forceTokenization(pos.lineNumber);
+							const { tokenType } = model
+								.getLineTokens(pos.lineNumber)
+								.findTokenAtOffset(pos.column - 1);
+
+							const inValidScope = quickSuggestions.other && tokenType === StandardTokenType.Other
+								|| quickSuggestions.comments && tokenType === StandardTokenType.Comment
+								|| quickSuggestions.strings && tokenType === StandardTokenType.String;
+
+							if (!inValidScope) {
+								return;
+							}
+						}
+
 						this.triggerAutoSuggestPromise = null;
 						this.trigger(true);
 					});
@@ -390,6 +418,11 @@ export class SuggestModel implements IDisposable {
 					// freeze when IntelliSense was manually requested
 					this.completionModel.lineContext = oldLineContext;
 					isFrozen = this.completionModel.items.length > 0;
+
+				} else {
+					// nothing left
+					this.cancel();
+					return;
 				}
 			}
 
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index e1424651bb5fa..faf8b9aebe187 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -1336,7 +1336,11 @@ declare module monaco.editor {
          * Enable quick suggestions (shadow suggestions)
          * Defaults to true.
          */
-        quickSuggestions?: boolean;
+        quickSuggestions?: boolean | {
+            other: boolean;
+            comments: boolean;
+            strings: boolean;
+        };
         /**
          * Quick suggestions show delay (in ms)
          * Defaults to 500 (ms)
@@ -1608,7 +1612,11 @@ declare module monaco.editor {
         readonly selectionClipboard: boolean;
         readonly hover: boolean;
         readonly contextmenu: boolean;
-        readonly quickSuggestions: boolean;
+        readonly quickSuggestions: boolean | {
+            other: boolean;
+            comments: boolean;
+            strings: boolean;
+        };
         readonly quickSuggestionsDelay: number;
         readonly parameterHints: boolean;
         readonly iconsInSuggestions: boolean;