Fix pasting a single line without selection

Author: CookedMelon

src/pasteEventHandler.ts

@@ -55,6 +55,7 @@ class PasteEditProvider implements DocumentPasteEditProvider {
 		this.languageClient = languageClient;
 	}
 
+
 	async prepareDocumentPaste?(document: TextDocument, _ranges: readonly Range[], dataTransfer: DataTransfer, _token: CancellationToken): Promise<void> {
 		const copiedContent: string = await dataTransfer.get(TEXT_MIMETYPE).asString();
 		if (copiedContent) {
@@ -73,6 +74,13 @@ class PasteEditProvider implements DocumentPasteEditProvider {
 			return null;
 		}
 
+		const editorData = dataTransfer.get("vscode-editor-data")?.value;
+		const isSingleLineCopy = Boolean(editorData && JSON.parse(editorData).isFromEmptySelection);
+		const isFromSameDocument = this.copiedContent === insertText && this.copiedDocumentUri === document.uri.toString();
+		if (isSingleLineCopy && isFromSameDocument) {
+			return undefined; // Let VS Code handle this normally
+		}
+
 		const range = ranges[0];
 
 		const location: Location = {