# Extend the partial accept handler

src/vs/editor/common/languages.ts

@@ -626,6 +626,9 @@ export interface CompletionList {
 export interface PartialAcceptInfo {
 	kind: PartialAcceptTriggerKind;
 	acceptedLength: number;
+	addedLength?: number;
+	replacedRange?: IRange;
+	versionBeforeAccept?: number;
 }
 
 /**

src/vs/editor/contrib/inlineCompletions/browser/model/inlineCompletionsModel.ts

@@ -726,6 +726,8 @@ export class InlineCompletionsModel extends Disposable {
 
 		const positions = this._positions.get();
 		const cursorPosition = positions[0];
+		const originalTextLength = editor.getModel()!.getValue(EndOfLinePreference.LF).length;
+		const versionBeforeAccept = editor.getModel()!.getVersionId();
 
 		// Executing the edit might free the completion, so we have to hold a reference on it.
 		completion.source.addRef();
@@ -750,11 +752,12 @@ export class InlineCompletionsModel extends Disposable {
 				// This assumes that the inline completion and the model use the same EOL style.
 				const text = editor.getModel()!.getValueInRange(acceptedRange, EndOfLinePreference.LF);
 				const acceptedLength = text.length;
+				const addedLength = editor.getModel()!.getValue(EndOfLinePreference.LF).length - originalTextLength;
 				completion.source.provider.handlePartialAccept(
 					completion.source.inlineCompletions,
 					completion.sourceInlineCompletion,
 					acceptedLength,
-					{ kind, acceptedLength: acceptedLength, }
+					{ kind, acceptedLength: acceptedLength, addedLength, versionBeforeAccept, replacedRange: Range.fromPositions(ghostTextPos) }
 				);
 			}
 		} finally {

src/vs/monaco.d.ts

@@ -7171,6 +7171,9 @@ declare namespace monaco.languages {
 	export interface PartialAcceptInfo {
 		kind: PartialAcceptTriggerKind;
 		acceptedLength: number;
+		addedLength?: number;
+		replacedRange?: IRange;
+		versionBeforeAccept?: number;
 	}
 
 	/**

src/vs/workbench/api/common/extHostTypeConverters.ts

@@ -3014,6 +3014,9 @@ export namespace PartialAcceptInfo {
 		return {
 			kind: PartialAcceptTriggerKind.to(info.kind),
 			acceptedLength: info.acceptedLength,
+			addedLength: info.addedLength,
+			versionBeforeAccept: info.versionBeforeAccept,
+			replacedRange: Range.to(info.replacedRange)
 		};
 	}
 }

src/vs/workbench/api/common/extHostTypes.ts

@@ -1856,6 +1856,9 @@ export class InlineSuggestionList implements vscode.InlineCompletionList {
 export interface PartialAcceptInfo {
 	kind: PartialAcceptTriggerKind;
 	acceptedLength: number;
+	addedLength?: number;
+	versionBeforeAccept?: number;
+	replacedRange?: vscode.Range;
 }
 
 export enum PartialAcceptTriggerKind {

src/vscode-dts/vscode.proposed.inlineCompletionsAdditions.d.ts

@@ -93,6 +93,18 @@ declare module 'vscode' {
 		 * The length of the substring of the provided inline completion text that was accepted already.
 		*/
 		acceptedLength: number;
+		/**
+		 * The length of characters added to the document by accepting inline completion.
+		 */
+		addedLength?: number;
+		/**
+		 * Version of the document before the inline completion was accepted.
+		 */
+		versionBeforeAccept?: number;
+		/**
+		 * Replaced range in document at version before acceptance, where the inline completion was inserted.
+		 */
+		replacedRange?: Range;
 	}
 
 	export enum PartialAcceptTriggerKind {