src/vs/editor/contrib/suggest/suggestModel.ts/LineContext/shouldAutoTrigger
class LineContext:	static shouldAutoTrigger(editor: ICodeEditor): boolean {
		if (!editor.hasModel()) {
			return false;
		}
		const model = editor.getModel();
		const pos = editor.getPosition();
		model.tokenizeIfCheap(pos.lineNumber);

		const word = model.getWordAtPosition(pos);
		if (!word) {
			return false;
		}
		if (word.endColumn !== pos.column) {
			return false;
		}
		if (!isNaN(Number(word.word))) {
			return false;
		}
		return true;
	}