made autocomplete trim end

src/autoComplete.ts

@@ -119,7 +119,9 @@ const predictTokens = async (
 			reject(err);
 		} finally {
 			response.abort();
-			clearTimeout(timeout);
+			try {
+				clearTimeout(timeout);
+			} catch { }
 		};
 	});
 
@@ -156,6 +158,47 @@ const tokenProvider = async (
 	);
 };
 
+const getCompletions = async (
+	extension: ExtensionState,
+	document: vscode.TextDocument,
+	position: vscode.Position,
+	_context: vscode.InlineCompletionContext,
+	token: vscode.CancellationToken,
+) => {
+	const tokens = await tokenProvider(
+		extension,
+		document,
+		position,
+		_context,
+		token,
+	);
+
+	const maxTokenLength = Math.max(...tokens.map((token) => token.length));
+
+	const documentEndPosition = new vscode.Position(document.lineCount - 1, document.lineAt(document.lineCount - 1).text.length);
+
+	const tokenOffset = document.positionAt(position.character + maxTokenLength);
+
+	const endPosition = documentEndPosition.isBefore(tokenOffset) ? documentEndPosition : tokenOffset;
+
+	const remainingText = document.getText(new vscode.Range(position, endPosition));
+
+	return tokens.map((token) => {
+		for (let index = token.length - 1; index >= 0; index--) {
+			if (index > remainingText.length) {
+				continue;
+			}
+
+			const tail = token.substring(index, token.length);
+			const tailMatchesDocument = tail === remainingText.substring(0, index);
+			if (tailMatchesDocument) {
+				return tail;
+			}
+		}
+		return token;
+	});
+};
+
 export const getAutoCompleteProvider = (extension: ExtensionState) => {
 	const provider: vscode.InlineCompletionItemProvider = {
 		async provideInlineCompletionItems(document, position, context, token) {
@@ -163,7 +206,7 @@ export const getAutoCompleteProvider = (extension: ExtensionState) => {
 				return [];
 			}
 			try {
-				const completions = await tokenProvider(extension, document, position, context, token);
+				const completions = await getCompletions(extension, document, position, context, token);
 
 				return completions.map((text) => ({
 					insertText: text,