Fixes #312

src/vs/editor/contrib/find/browser/find.ts

@@ -9,7 +9,7 @@ import {EditorBrowserRegistry} from 'vs/editor/browser/editorBrowserExtensions';
 import {CommonEditorRegistry, ContextKey, EditorActionDescriptor} from 'vs/editor/common/editorCommonExtensions';
 import {EditorAction, Behaviour} from 'vs/editor/common/editorAction';
 import FindWidget = require('./findWidget');
-import FindModel = require('./findModel');
+import FindModel = require('vs/editor/contrib/find/common/findModel');
 import nls = require('vs/nls');
 import EventEmitter = require('vs/base/common/eventEmitter');
 import EditorBrowser = require('vs/editor/browser/editorBrowser');

src/vs/editor/contrib/find/browser/findWidget.ts

@@ -16,7 +16,7 @@ import InputBox = require('vs/base/browser/ui/inputbox/inputBox');
 import Findinput = require('vs/base/browser/ui/findinput/findInput');
 import EditorBrowser = require('vs/editor/browser/editorBrowser');
 import EditorCommon = require('vs/editor/common/editorCommon');
-import FindModel = require('./findModel');
+import FindModel = require('vs/editor/contrib/find/common/findModel');
 import Lifecycle = require('vs/base/common/lifecycle');
 import {CommonKeybindings} from 'vs/base/common/keyCodes';
 

src/vs/editor/contrib/find/browser/findModel.ts → src/vs/editor/contrib/find/common/findModel.ts

@@ -214,7 +214,7 @@ export class FindModelBoundToEditorModel extends Events.EventEmitter implements
 				this.findScopeDecorationId = decorations[0];
 			}
 
-			this.addMatchesDecorations(changeAccessor, this.editor.getModel().findMatches(this.searchString, this._getSearchRange(), this.isRegex, this.matchCase, this.wholeWord));
+			this.addMatchesDecorations(changeAccessor, this._findMatches());
 		});
 		this.highlightedDecorationId = null;
 
@@ -326,7 +326,6 @@ export class FindModelBoundToEditorModel extends Events.EventEmitter implements
 		}
 	}
 
-
 	private setSelectionToDecoration(decorationId:string): void {
 		this.editor.changeDecorations((changeAccessor: EditorCommon.IModelDecorationsChangeAccessor) => {
 			if (this.highlightedDecorationId !== null) {
@@ -346,8 +345,10 @@ export class FindModelBoundToEditorModel extends Events.EventEmitter implements
 		if (!this.isRegex) {
 			return this.replaceString;
 		}
-		var regexp = Strings.createRegExp(this.searchString, this.isRegex, this.matchCase, this.wholeWord);
-		return matchedString.replace(regexp, this.replaceString);
+		let regexp = Strings.createRegExp(this.searchString, this.isRegex, this.matchCase, this.wholeWord);
+		// Parse the replace string to support that \t or \n mean the right thing
+		let parsedReplaceString = parseReplaceString(this.replaceString);
+		return matchedString.replace(regexp, parsedReplaceString);
 	}
 
 	public replace(): void {
@@ -379,6 +380,10 @@ export class FindModelBoundToEditorModel extends Events.EventEmitter implements
 		}
 	}
 
+	private _findMatches(limitResultCount?:number): EditorCommon.IEditorRange[] {
+		return this.editor.getModel().findMatches(this.searchString, this._getSearchRange(), this.isRegex, this.matchCase, this.wholeWord, limitResultCount);
+	}
+
 	public replaceAll(): void {
 		if (this.decorations.length === 0) {
 			return;
@@ -387,7 +392,7 @@ export class FindModelBoundToEditorModel extends Events.EventEmitter implements
 		let model = this.editor.getModel();
 
 		// Get all the ranges (even more than the highlighted ones)
-		let ranges = this.editor.getModel().findMatches(this.searchString, this._getSearchRange(), this.isRegex, this.matchCase, this.wholeWord, Number.MAX_VALUE);
+		let ranges = this._findMatches(Number.MAX_VALUE);
 
 		// Remove all decorations
 		this.editor.changeDecorations((changeAccessor:EditorCommon.IModelDecorationsChangeAccessor) => {
@@ -474,3 +479,64 @@ export class FindModelBoundToEditorModel extends Events.EventEmitter implements
 
 }
 
+const BACKSLASH_CHAR_CODE = '\\'.charCodeAt(0);
+const n_CHAR_CODE = 'n'.charCodeAt(0);
+const t_CHAR_CODE = 't'.charCodeAt(0);
+
+/**
+ * \n => LF
+ * \t => TAB
+ * \\ => \
+ * everything else stays untouched
+ */
+export function parseReplaceString(input:string): string {
+	if (!input || input.length === 0) {
+		return input;
+	}
+
+	let substrFrom = 0, result = '';
+	for (let i = 0, len = input.length; i < len; i++) {
+		let chCode = input.charCodeAt(i);
+
+		if (chCode === BACKSLASH_CHAR_CODE) {
+
+			// move to next char
+			i++;
+
+			if (i >= len) {
+				// string ends with a \
+				break;
+			}
+
+			let nextChCode = input.charCodeAt(i);
+			let replaceWithCharacter: string = null;
+
+			switch (nextChCode) {
+				case BACKSLASH_CHAR_CODE:
+					// \\ => \
+					replaceWithCharacter = '\\';
+					break;
+				case n_CHAR_CODE:
+					// \n => LF
+					replaceWithCharacter = '\n';
+					break;
+				case t_CHAR_CODE:
+					// \t => TAB
+					replaceWithCharacter = '\t';
+					break;
+			}
+
+			if (replaceWithCharacter) {
+				result += input.substring(substrFrom, i - 1) + replaceWithCharacter;
+				substrFrom = i + 1;
+			}
+		}
+	}
+
+	if (substrFrom === 0) {
+		// no replacement occured
+		return input;
+	}
+
+	return result + input.substring(substrFrom);
+}

src/vs/editor/contrib/find/test/common/findModel.test.ts

@@ -0,0 +1,48 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import assert = require('assert');
+import {FindModelBoundToEditorModel, parseReplaceString} from 'vs/editor/contrib/find/common/findModel';
+
+suite('FindModel', () => {
+
+	test('parseFindWidgetString', () => {
+		let testParse = (input:string, expected:string) => {
+			let actual = parseReplaceString(input);
+			assert.equal(actual, expected);
+
+			let actual2 = parseReplaceString('hello' + input + 'hi');
+			assert.equal(actual2, 'hello' + expected + 'hi');
+		};
+
+		// no backslash => no treatment
+		testParse('hello', 'hello');
+
+		// \t => TAB
+		testParse('\\thello', '\thello');
+
+		// \n => LF
+		testParse('\\nhello', '\nhello');
+
+		// \\t => \t
+		testParse('\\\\thello', '\\thello');
+
+		// \\\t => \TAB
+		testParse('\\\\\\thello', '\\\thello');
+
+		// \\\\t => \\t
+		testParse('\\\\\\\\thello', '\\\\thello');
+
+		// \ at the end => no treatment
+		testParse('hello\\', 'hello\\');
+
+		// \ with unknown char => no treatment
+		testParse('hello\\x', 'hello\\x');
+
+		// \ with back reference => no treatment
+		testParse('hello\\0', 'hello\\0');
+	});
+});