Escape some newlines in question extraction

tests/test_utils_compile.py

@@ -10,6 +10,16 @@ from copienator import utils
 
 
 class CompileToPdfTests(unittest.TestCase):
+    def test_strict_compilation_propagates_failure_with_context(self):
+        result = subprocess.CompletedProcess(args=[], returncode=1,
+            stdout="! Undefined control sequence.\nl.13 broken command\n")
+        with tempfile.TemporaryDirectory() as directory, \
+                patch.object(utils.subprocess, "run", return_value=result) as run:
+            with self.assertRaisesRegex(RuntimeError, "LaTeX failed") as error:
+                utils.compile_to_pdf("broken", Path(directory) / "out.pdf", strict=True)
+            self.assertIn("l.13 broken command", str(error.exception))
+            self.assertEqual(run.call_args.kwargs["errors"], "replace")
+
     def test_warns_when_latex_fails_even_if_partial_pdf_exists(self):
         with tempfile.TemporaryDirectory() as temporary:
             output = Path(temporary) / "result.pdf"