diff --git a/.github/mingw-w64-x86_64.cmake b/.github/mingw-w64-x86_64.cmake
new file mode 100644
index 00000000..2f22e13d
--- /dev/null
+++ b/.github/mingw-w64-x86_64.cmake
@@ -0,0 +1,16 @@
+set(CMAKE_SYSTEM_NAME Windows)
+set(TOOLCHAIN_PREFIX x86_64-w64-mingw32)
+
+# cross compilers to use for C, C++ and Fortran
+set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
+set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)
+set(CMAKE_Fortran_COMPILER ${TOOLCHAIN_PREFIX}-gfortran)
+set(CMAKE_RC_COMPILER ${TOOLCHAIN_PREFIX}-windres)
+
+# target environment on the build host system
+set(CMAKE_FIND_ROOT_PATH /usr/${TOOLCHAIN_PREFIX})
+
+# modify default behavior of FIND_XXX() commands
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/test/test_scalar_dquoted.cpp b/test/test_scalar_dquoted.cpp
index 8b90d83b..6f77ce98 100644
--- a/test/test_scalar_dquoted.cpp
+++ b/test/test_scalar_dquoted.cpp
@@ -405,6 +405,26 @@ INSTANTIATE_TEST_SUITE_P(double_quoted_filter,
 
 //-----------------------------------------------------------------------------
 
+TEST(double_quoted, issue486)
+{
+    csubstr srcs[] = {
+        "foo: \"test,\nbar\"", // this is invalid YAML, but ryml can parse it (but won't in the future)
+        "foo: \"test,\n bar\"" // ... this is valid
+    };
+    auto check = [](Tree const &t){
+        ASSERT_TRUE(t.rootref().is_map());
+        ASSERT_TRUE(t.rootref().has_child("foo"));
+        ASSERT_TRUE(t["foo"].has_val());
+        ASSERT_TRUE(t["foo"].is_val_dquo());
+        ASSERT_EQ(t["foo"].val(), "test, bar");
+    };
+    for(csubstr src : srcs)
+    {
+        check(parse_in_arena(src));
+        test_check_emit_check(src, check);
+    }
+}
+
 TEST(double_quoted, leading_whitespace)
 {
     csubstr val = "\n \tfoo";