function getIndentationEditOperations(model: ITokenizedModel, builder: IEditOperationBuilder, tabSize: number, tabsToSpaces: boolean): void {
	if (model.getLineCount() === 1 && model.getLineMaxColumn(1) === 1) {
		// Model is empty
		return;
	}

	let spaces = '';
	for (let i = 0; i < tabSize; i++) {
		spaces += ' ';
	}

	const content = model.getLinesContent();
	for (let i = 0; i < content.length; i++) {
		let lastIndentationColumn = model.getLineFirstNonWhitespaceColumn(i + 1);
		if (lastIndentationColumn === 0) {
			lastIndentationColumn = model.getLineMaxColumn(i + 1);
		}

		const text = (tabsToSpaces ? content[i].substr(0, lastIndentationColumn).replace(/\t/ig, spaces) :
			content[i].substr(0, lastIndentationColumn).replace(new RegExp(spaces, 'gi'), '\t')) +
			content[i].substr(lastIndentationColumn);

		builder.addEditOperation(new Range(i + 1, 1, i + 1, model.getLineMaxColumn(i + 1)), text);
	}
}

	private static _runAutoIndentType(config: CursorConfiguration, model: ITokenizedModel, range: Range, ch: string): ICommand {
		let currentIndentation = LanguageConfigurationRegistry.getIndentationAtPosition(model, range.startLineNumber, range.startColumn);
		let actualIndentation = LanguageConfigurationRegistry.getIndentActionForType(model, range, ch, {
			shiftIndent: (indentation) => {
				return TypeOperations.shiftIndent(config, indentation);
			},
			unshiftIndent: (indentation) => {
				return TypeOperations.unshiftIndent(config, indentation);
			},
		});

		if (actualIndentation === null) {
			return null;
		}

		if (actualIndentation !== config.normalizeIndentation(currentIndentation)) {
			let firstNonWhitespace = model.getLineFirstNonWhitespaceColumn(range.startLineNumber);
			if (firstNonWhitespace === 0) {
				return TypeOperations._typeCommand(
					new Range(range.startLineNumber, 0, range.endLineNumber, range.endColumn),
					config.normalizeIndentation(actualIndentation) + ch,
					false
				);
			} else {
				return TypeOperations._typeCommand(
					new Range(range.startLineNumber, 0, range.endLineNumber, range.endColumn),
					config.normalizeIndentation(actualIndentation) +
					model.getLineContent(range.startLineNumber).substring(firstNonWhitespace - 1, range.startColumn - 1) + ch,
					false
				);
			}
		}

		return null;
	}

	private static _typeInterceptorElectricChar(config: CursorConfiguration, model: ITokenizedModel, cursor: SingleCursorState, ch: string): EditOperationResult {
		if (!config.electricChars.hasOwnProperty(ch)) {
			return null;
		}

		let position = cursor.position;
		let lineTokens = model.getLineTokens(position.lineNumber, false);

		let electricAction: IElectricAction;
		try {
			electricAction = LanguageConfigurationRegistry.onElectricCharacter(ch, lineTokens, position.column);
		} catch (e) {
			onUnexpectedError(e);
		}

		if (!electricAction) {
			return null;
		}

		if (electricAction.appendText) {
			return new EditOperationResult(new ReplaceCommandWithOffsetCursorState(cursor.selection, ch + electricAction.appendText, 0, -electricAction.appendText.length), {
				shouldPushStackElementBefore: false,
				shouldPushStackElementAfter: true
			});
		}

		if (electricAction.matchOpenBracket) {
			let endColumn = (lineTokens.getLineContent() + ch).lastIndexOf(electricAction.matchOpenBracket) + 1;
			let match = model.findMatchingBracketUp(electricAction.matchOpenBracket, {
				lineNumber: position.lineNumber,
				column: endColumn
			});

			if (match) {
				if (match.startLineNumber === position.lineNumber) {
					// matched something on the same line => no change in indentation
					return null;
				}
				let matchLine = model.getLineContent(match.startLineNumber);
				let matchLineIndentation = strings.getLeadingWhitespace(matchLine);
				let newIndentation = config.normalizeIndentation(matchLineIndentation);

				let lineText = model.getLineContent(position.lineNumber);
				let lineFirstNonBlankColumn = model.getLineFirstNonWhitespaceColumn(position.lineNumber) || position.column;

				let prefix = lineText.substring(lineFirstNonBlankColumn - 1, position.column - 1);
				let typeText = newIndentation + prefix + ch;

				let typeSelection = new Range(position.lineNumber, 1, position.lineNumber, position.column);

				return new EditOperationResult(new ReplaceCommand(typeSelection, typeText), {
					shouldPushStackElementBefore: false,
					shouldPushStackElementAfter: true
				});
			}
		}

		return null;
	}

	private static _typeInterceptorAutoClosingOpenChar(config: CursorConfiguration, model: ITokenizedModel, cursor: SingleCursorState, ch: string): EditOperationResult {
		if (!config.autoClosingBrackets) {
			return null;
		}

		let selection = cursor.selection;

		if (!selection.isEmpty() || !config.autoClosingPairsOpen.hasOwnProperty(ch)) {
			return null;
		}

		let position = cursor.position;
		let lineText = model.getLineContent(position.lineNumber);
		let beforeCharacter = lineText.charAt(position.column - 1);

		// Only consider auto closing the pair if a space follows or if another autoclosed pair follows
		if (beforeCharacter) {
			let thisBraceIsSymmetric = (config.autoClosingPairsOpen[ch] === ch);

			let isBeforeCloseBrace = false;
			for (let otherCloseBrace in config.autoClosingPairsClose) {
				let otherBraceIsSymmetric = (config.autoClosingPairsOpen[otherCloseBrace] === otherCloseBrace);
				if (!thisBraceIsSymmetric && otherBraceIsSymmetric) {
					continue;
				}
				if (beforeCharacter === otherCloseBrace) {
					isBeforeCloseBrace = true;
					break;
				}
			}
			if (!isBeforeCloseBrace && !/\s/.test(beforeCharacter)) {
				return null;
			}
		}

		let lineTokens = model.getLineTokens(position.lineNumber, false);

		let shouldAutoClosePair = false;
		try {
			shouldAutoClosePair = LanguageConfigurationRegistry.shouldAutoClosePair(ch, lineTokens, position.column);
		} catch (e) {
			onUnexpectedError(e);
		}

		if (!shouldAutoClosePair) {
			return null;
		}

		let closeCharacter = config.autoClosingPairsOpen[ch];
		return new EditOperationResult(new ReplaceCommandWithOffsetCursorState(selection, ch + closeCharacter, 0, -closeCharacter.length), {
			shouldPushStackElementBefore: true,
			shouldPushStackElementAfter: false
		});
	}

	private matchEnterRule(model: ITokenizedModel, indentConverter: IIndentConverter, tabSize: number, line: number, oneLineAbove: number, oneLineAboveText?: string) {
		let validPrecedingLine = oneLineAbove;
		while (validPrecedingLine >= 1) {
			// ship empty lines as empty lines just inherit indentation
			let lineContent;
			if (validPrecedingLine === oneLineAbove && oneLineAboveText !== undefined) {
				lineContent = oneLineAboveText;
			} else {
				lineContent = model.getLineContent(validPrecedingLine);
			}

			let nonWhitespaceIdx = strings.lastNonWhitespaceIndex(lineContent);
			if (nonWhitespaceIdx >= 0) {
				break;
			}
			validPrecedingLine--;
		}

		if (validPrecedingLine < 1 || line > model.getLineCount()) {
			return null;
		}

		let maxColumn = model.getLineMaxColumn(validPrecedingLine);
		let enter = LanguageConfigurationRegistry.getEnterAction(model, new Range(validPrecedingLine, maxColumn, validPrecedingLine, maxColumn));

		if (enter) {
			let enterPrefix = enter.indentation;
			let enterAction = enter.enterAction;

			if (enterAction.indentAction === IndentAction.None) {
				enterPrefix = enter.indentation + enterAction.appendText;
			} else if (enterAction.indentAction === IndentAction.Indent) {
				enterPrefix = enter.indentation + enterAction.appendText;
			} else if (enterAction.indentAction === IndentAction.IndentOutdent) {
				enterPrefix = enter.indentation;
			} else if (enterAction.indentAction === IndentAction.Outdent) {
				enterPrefix = indentConverter.unshiftIndent(enter.indentation) + enterAction.appendText;
			}
			let movingLineText = model.getLineContent(line);
			if (this.trimLeft(movingLineText).indexOf(this.trimLeft(enterPrefix)) >= 0) {
				let oldIndentation = strings.getLeadingWhitespace(model.getLineContent(line));
				let newIndentation = strings.getLeadingWhitespace(enterPrefix);
				let indentMetadataOfMovelingLine = LanguageConfigurationRegistry.getIndentMetadata(model, line);
				if (indentMetadataOfMovelingLine & IndentConsts.DECREASE_MASK) {
					newIndentation = indentConverter.unshiftIndent(newIndentation);
				}
				let newSpaceCnt = IndentUtil.getSpaceCnt(newIndentation, tabSize);
				let oldSpaceCnt = IndentUtil.getSpaceCnt(oldIndentation, tabSize);
				return newSpaceCnt - oldSpaceCnt;
			}
		}

		return null;
	}

	private static _isAutoClosingOpenCharType(config: CursorConfiguration, model: ITokenizedModel, cursors: SingleCursorState[], ch: string): boolean {
		if (!config.autoClosingBrackets || !config.autoClosingPairsOpen.hasOwnProperty(ch)) {
			return false;
		}

		for (let i = 0, len = cursors.length; i < len; i++) {
			const cursor = cursors[i];
			const selection = cursor.selection;
			if (!selection.isEmpty()) {
				return false;
			}

			const position = cursor.position;
			const lineText = model.getLineContent(position.lineNumber);
			const afterCharacter = lineText.charAt(position.column - 1);

			// Only consider auto closing the pair if a space follows or if another autoclosed pair follows
			if (afterCharacter) {
				const thisBraceIsSymmetric = (config.autoClosingPairsOpen[ch] === ch);

				let isBeforeCloseBrace = false;
				for (let otherCloseBrace in config.autoClosingPairsClose) {
					const otherBraceIsSymmetric = (config.autoClosingPairsOpen[otherCloseBrace] === otherCloseBrace);
					if (!thisBraceIsSymmetric && otherBraceIsSymmetric) {
						continue;
					}
					if (afterCharacter === otherCloseBrace) {
						isBeforeCloseBrace = true;
						break;
					}
				}
				if (!isBeforeCloseBrace && !/\s/.test(afterCharacter)) {
					return false;
				}
			}

			model.forceTokenization(position.lineNumber);
			const lineTokens = model.getLineTokens(position.lineNumber);

			let shouldAutoClosePair = false;
			try {
				shouldAutoClosePair = LanguageConfigurationRegistry.shouldAutoClosePair(ch, lineTokens, position.column);
			} catch (e) {
				onUnexpectedError(e);
			}

			if (!shouldAutoClosePair) {
				return false;
			}
		}

		return true;
	}

	private static _goodIndentForLine(config: CursorConfiguration, model: ITokenizedModel, lineNumber: number): string {
		let action;
		let indentation;
		let expectedIndentAction = LanguageConfigurationRegistry.getInheritIndentForLine(model, lineNumber, false);

		if (expectedIndentAction) {
			action = expectedIndentAction.action;
			indentation = expectedIndentAction.indentation;
		} else if (lineNumber > 1) {
			let lastLineNumber = lineNumber - 1;
			for (lastLineNumber = lineNumber - 1; lastLineNumber >= 1; lastLineNumber--) {
				let lineText = model.getLineContent(lastLineNumber);
				let nonWhitespaceIdx = strings.lastNonWhitespaceIndex(lineText);
				if (nonWhitespaceIdx >= 0) {
					break;
				}
			}

			if (lastLineNumber < 1) {
				// No previous line with content found
				return null;
			}

			let maxColumn = model.getLineMaxColumn(lastLineNumber);
			let expectedEnterAction = LanguageConfigurationRegistry.getEnterAction(model, new Range(lastLineNumber, maxColumn, lastLineNumber, maxColumn));
			if (expectedEnterAction) {
				indentation = expectedEnterAction.indentation;
				action = expectedEnterAction.enterAction;
				if (action) {
					indentation += action.appendText;
				}
			}
		}

		if (action) {
			if (action === IndentAction.Indent) {
				indentation = TypeOperations.shiftIndent(config, indentation);
			}

			if (action === IndentAction.Outdent) {
				indentation = TypeOperations.unshiftIndent(config, indentation);
			}

			indentation = config.normalizeIndentation(indentation);
		}

		if (!indentation) {
			return null;
		}

		return indentation;
	}

	public static tab(config: CursorConfiguration, model: ITokenizedModel, cursors: SingleCursorState[]): EditOperationResult {
		let commands: CommandResult[] = [];
		for (let i = 0, len = cursors.length; i < len; i++) {
			const cursor = cursors[i];
			let selection = cursor.selection;

			if (selection.isEmpty()) {

				let lineText = model.getLineContent(selection.startLineNumber);

				if (/^\s*$/.test(lineText)) {
					let goodIndent = this._goodIndentForLine(config, model, selection.startLineNumber);
					goodIndent = goodIndent || '\t';
					let possibleTypeText = config.normalizeIndentation(goodIndent);
					if (!strings.startsWith(lineText, possibleTypeText)) {
						let command = new ReplaceCommand(new Range(selection.startLineNumber, 1, selection.startLineNumber, lineText.length + 1), possibleTypeText);
						commands[i] = new CommandResult(command, true);
						continue;
					}
				}

				commands[i] = new CommandResult(this._replaceJumpToNextIndent(config, model, selection), true);
			} else {
				if (selection.startLineNumber === selection.endLineNumber) {
					let lineMaxColumn = model.getLineMaxColumn(selection.startLineNumber);
					if (selection.startColumn !== 1 || selection.endColumn !== lineMaxColumn) {
						// This is a single line selection that is not the entire line
						commands[i] = new CommandResult(this._replaceJumpToNextIndent(config, model, selection), false);
						continue;
					}
				}

				commands[i] = new CommandResult(
					new ShiftCommand(selection, {
						isUnshift: false,
						tabSize: config.tabSize,
						oneIndent: config.oneIndent,
						useTabStops: config.useTabStops
					}),
					false
				);
			}
		}
		return new EditOperationResult(commands, {
			shouldPushStackElementBefore: true,
			shouldPushStackElementAfter: true
		});
	}

					virtualModel.getLineContent = (lineNumber: number) => {
						if (lineNumber === movingLineNumber) {
							return model.getLineContent(s.startLineNumber);
						} else {
							return model.getLineContent(lineNumber);
						}
					};

						virtualModel.getLineContent = (lineNumber: number) => {
							if (lineNumber === s.startLineNumber) {
								return insertingText;
							} else if (lineNumber >= s.startLineNumber + 1 && lineNumber <= s.endLineNumber + 1) {
								return model.getLineContent(lineNumber - 1);
							} else {
								return model.getLineContent(lineNumber);
							}
						};