diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index eeb30e4..42e40b4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,5 +1,14 @@
 name: test
-on: [push, pull_request]
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ${{ matrix.os }}
@@ -8,7 +17,10 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
       - run: go version
       - run: go test -v
       - run: cd hjson-cli && go build
diff --git a/assets/comments2/strings4_result.hjson b/assets/comments2/strings4_result.hjson
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/comments2/strings4_result.hjson
@@ -0,0 +1 @@
+""
diff --git a/assets/comments2/strings4_result.json b/assets/comments2/strings4_result.json
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/comments2/strings4_result.json
@@ -0,0 +1 @@
+""
diff --git a/assets/comments3/strings4_result.hjson b/assets/comments3/strings4_result.hjson
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/comments3/strings4_result.hjson
@@ -0,0 +1 @@
+""
diff --git a/assets/comments3/strings4_result.json b/assets/comments3/strings4_result.json
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/comments3/strings4_result.json
@@ -0,0 +1 @@
+""
diff --git a/assets/failStr9a_test.hjson b/assets/failStr9a_test.hjson
new file mode 100644
index 0000000..229b94d
--- /dev/null
+++ b/assets/failStr9a_test.hjson
@@ -0,0 +1,4 @@
+[
+[
+=
+[[''''''
diff --git a/assets/sorted/strings4_result.hjson b/assets/sorted/strings4_result.hjson
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/sorted/strings4_result.hjson
@@ -0,0 +1 @@
+""
diff --git a/assets/sorted/strings4_result.json b/assets/sorted/strings4_result.json
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/sorted/strings4_result.json
@@ -0,0 +1 @@
+""
diff --git a/assets/strings4_result.hjson b/assets/strings4_result.hjson
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/strings4_result.hjson
@@ -0,0 +1 @@
+""
diff --git a/assets/strings4_result.json b/assets/strings4_result.json
new file mode 100644
index 0000000..e16c76d
--- /dev/null
+++ b/assets/strings4_result.json
@@ -0,0 +1 @@
+""
diff --git a/assets/strings4_test.hjson b/assets/strings4_test.hjson
new file mode 100644
index 0000000..9cad736
--- /dev/null
+++ b/assets/strings4_test.hjson
@@ -0,0 +1 @@
+''''''
diff --git a/assets/testlist.txt b/assets/testlist.txt
index f884d59..9794f11 100644
--- a/assets/testlist.txt
+++ b/assets/testlist.txt
@@ -70,6 +70,7 @@ failStr6c_test.hjson
 failStr6d_test.hjson
 failStr7a_test.hjson
 failStr8a_test.hjson
+failStr9a_test.hjson
 int64_test.hjson
 kan_test.hjson
 keys_test.hjson
@@ -85,6 +86,7 @@ passSingle_test.hjson
 stringify1_test.hjson
 strings2_test.hjson
 strings3_test.hjson
+strings4_test.hjson
 strings_test.hjson
 trail_test.hjson
 stringify/quotes_all_test.hjson