reintroduce editor.glyphMargin

fixes #13212

src/vs/editor/common/config/commonEditorConfig.ts

@@ -852,6 +852,11 @@ let editorConfiguration: IConfigurationNode = {
 			'default': DefaultConfig.editor.folding,
 			'description': nls.localize('folding', "Controls whether the editor has code folding enabled")
 		},
+		'editor.glyphMargin': {
+			'type': 'boolean',
+			'default': DefaultConfig.editor.glyphMargin,
+			'description': nls.localize('glyphMargin', "Controls whether the editor should render the vertical glyph margin. Glyph margin is mostly used for debugging.")
+		},
 		'editor.useTabStops': {
 			'type': 'boolean',
 			'default': DefaultConfig.editor.useTabStops,

src/vs/editor/common/config/defaultConfig.ts

@@ -43,7 +43,7 @@ class ConfigClass implements IConfiguration {
 			lineNumbers: 'on',
 			selectOnLineNumbers: true,
 			lineNumbersMinChars: 5,
-			glyphMargin: false,
+			glyphMargin: true,
 			lineDecorationsWidth: 10,
 			revealHorizontalRightPadding: 30,
 			roundedSelection: true,

src/vs/editor/common/editorCommon.ts

@@ -221,7 +221,7 @@ export interface IEditorOptions {
 	lineNumbersMinChars?: number;
 	/**
 	 * Enable the rendering of the glyph margin.
-	 * Defaults to false.
+	 * Defaults to true.
 	 */
 	glyphMargin?: boolean;
 	/**

src/vs/monaco.d.ts

@@ -1085,7 +1085,7 @@ declare module monaco.editor {
         lineNumbersMinChars?: number;
         /**
          * Enable the rendering of the glyph margin.
-         * Defaults to false.
+         * Defaults to true.
          */
         glyphMargin?: boolean;
         /**

src/vs/workbench/browser/parts/editor/textEditor.ts

@@ -118,7 +118,6 @@ export abstract class BaseTextEditor extends BaseEditor {
 	protected getCodeEditorOptions(): IEditorOptions {
 		return {
 			overviewRulerLanes: 3,
-			glyphMargin: true,
 			lineNumbersMinChars: 3,
 			theme: this.themeService.getColorTheme()
 		};