fix #62335

src/vs/workbench/parts/snippets/electron-browser/snippetCompletionProvider.ts

@@ -88,6 +88,8 @@ export class SnippetCompletionProvider implements CompletionItemProvider {
 			let pos = { lineNumber: position.lineNumber, column: 1 };
 			let lineOffsets: number[] = [];
 			let linePrefixLow = model.getLineContent(position.lineNumber).substr(0, position.column - 1).toLowerCase();
+			let endsInWhitespace = linePrefixLow.match(/\s$/);
+
 			while (pos.column < position.column) {
 				let word = model.getWordAtPosition(pos);
 				if (word) {
@@ -108,20 +110,28 @@ export class SnippetCompletionProvider implements CompletionItemProvider {
 					pos.column += 1;
 				}
 			}
+
 			if (lineOffsets.length === 0) {
 				// no interesting spans found -> pick all snippets
 				suggestions = snippets.map(snippet => new SnippetCompletion(snippet, Range.fromPositions(position)));
 			}
 			else {
-				let consumed = new Set<Snippet>();
+				let availableSnippets = new Set<Snippet>();
+				snippets.forEach(availableSnippets.add, availableSnippets);
 				suggestions = [];
 				for (let start of lineOffsets) {
-					for (const snippet of snippets) {
-						if (!consumed.has(snippet) && matches(linePrefixLow, start, snippet.prefixLow, 0)) {
+					availableSnippets.forEach(snippet => {
+						if (matches(linePrefixLow, start, snippet.prefixLow, 0)) {
 							suggestions.push(new SnippetCompletion(snippet, Range.fromPositions(position.delta(0, -(linePrefixLow.length - start)), position)));
-							consumed.add(snippet);
+							availableSnippets.delete(snippet);
 						}
-					}
+					});
+				}
+				if (endsInWhitespace) {
+					// add remaing snippets when the current prefix ends in whitespace
+					availableSnippets.forEach(snippet => {
+						suggestions.push(new SnippetCompletion(snippet, Range.fromPositions(position)));
+					});
 				}
 			}
 

src/vs/workbench/parts/snippets/test/electron-browser/snippetsService.test.ts

@@ -352,4 +352,23 @@ suite('SnippetsService', function () {
 
 		toDispose.dispose();
 	});
+
+	test('No snippets shown when triggering completions at whitespace on line that already has text #62335', async function () {
+		snippetService = new SimpleSnippetService([new Snippet(
+			['fooLang'],
+			'bug',
+			'bug',
+			'',
+			'second',
+			'',
+			SnippetSource.User
+		)]);
+
+		const provider = new SnippetCompletionProvider(modeService, snippetService);
+
+		let model = TextModel.createFromString('a ', undefined, modeService.getLanguageIdentifier('fooLang'));
+		let result = await provider.provideCompletionItems(model, new Position(1, 3));
+
+		assert.equal(result.suggestions.length, 1);
+	});
 });