implement subshell, and fix vector operator[] unvalid index

1 files changed, 6 insertions, 1 deletions

diff --git a/module-test/lexer_test.cc b/module-test/lexer_test.cc
index 364c890..50b6da0 100644
--- a/module-test/lexer_test.cc
+++ b/module-test/lexer_test.cc
@@ -37,7 +37,7 @@ constexpr int MAXLINE = 1024;
 int main()
 {
     verbose = true;
-    int test_case = 15;
+    int test_case = 16;
     string s;
 
     switch (test_case)
@@ -116,6 +116,11 @@ int main()
             s = "alpha && (beta || gamma) && (sleep &)";
             break;
 
+        // \n test
+        case 16:
+            s = "(ls)";
+            break;
+
         default:
             return 0;
     }