1233

2 files changed, 16 insertions, 0 deletions

diff --git a/cpp/tangle/030tangle.cc b/cpp/tangle/030tangle.cc
index 944b12ef..33ff6e28 100644
--- a/cpp/tangle/030tangle.cc
+++ b/cpp/tangle/030tangle.cc
@@ -119,6 +119,11 @@ void process_next_hunk(istream& in, const string& directive, const string& filen
         ++line_number;
         continue;
       }
+      if (cmd == "scenario" && trim(curr_line).empty()) {
+        // ignore empty lines in scenarios
+        ++line_number;
+        continue;
+      }
       hunk.push_back(Line(curr_line, filename, line_number));
       ++line_number;
     }
diff --git a/cpp/tangle/030tangle.test.cc b/cpp/tangle/030tangle.test.cc
index 9ea0353d..c811881d 100644
--- a/cpp/tangle/030tangle.test.cc
+++ b/cpp/tangle/030tangle.test.cc
@@ -177,6 +177,17 @@ void test_tangle_supports_scenarios() {
   CHECK(lines.empty());
 }
 
+void test_tangle_ignores_empty_lines_in_scenarios() {
+  istringstream in(":(scenario does_bar)\nabc def\n+layer1: pqr\n  \n+layer2: xyz");
+  list<Line> lines;
+  tangle(in, lines);
+  CHECK_EQ(lines.front().contents, "TEST(does_bar)");  lines.pop_front();
+  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n\");");  lines.pop_front();
+  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: xyz\");");  lines.pop_front();
+  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
+  CHECK(lines.empty());
+}
+
 void test_tangle_handles_empty_lines_in_scenarios() {
   istringstream in(":(scenario does_bar)\nabc def\n\n+layer1: pqr\n+layer2: xyz");
   list<Line> lines;