diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/esc_multiple_newlines.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/esc_multiple_newlines.kdl
new file mode 100644
index 0000000..032ed17
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/esc_multiple_newlines.kdl
@@ -0,0 +1 @@
+node "12"
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_after_semicolon.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_after_semicolon.kdl
new file mode 100644
index 0000000..3e545b1
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_after_semicolon.kdl
@@ -0,0 +1,2 @@
+node
+node
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_alone.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_alone.kdl
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_alone.kdl
@@ -0,0 +1 @@
+
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_empty_line.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_empty_line.kdl
new file mode 100644
index 0000000..64f5a0a
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_empty_line.kdl
@@ -0,0 +1 @@
+node
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_end_of_node.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_end_of_node.kdl
new file mode 100644
index 0000000..422c2b7
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_end_of_node.kdl
@@ -0,0 +1,2 @@
+a
+b
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_in_child_block.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_in_child_block.kdl
new file mode 100644
index 0000000..9b05e30
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_in_child_block.kdl
@@ -0,0 +1,4 @@
+parent {
+    child
+    child
+}
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_node_type.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_node_type.kdl
new file mode 100644
index 0000000..c790643
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_node_type.kdl
@@ -0,0 +1 @@
+(type)node
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_slashdash.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_slashdash.kdl
new file mode 100644
index 0000000..64f5a0a
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/escline_slashdash.kdl
@@ -0,0 +1 @@
+node
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_double_backslash.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_double_backslash.kdl
new file mode 100644
index 0000000..38ad0e5
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_double_backslash.kdl
@@ -0,0 +1 @@
+node "a\\ b\na\\b"
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_delimiter.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_delimiter.kdl
new file mode 100644
index 0000000..025d655
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_delimiter.kdl
@@ -0,0 +1 @@
+node "\"\"\""
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_in_closing_line.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_in_closing_line.kdl
new file mode 100644
index 0000000..e7186a6
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_in_closing_line.kdl
@@ -0,0 +1 @@
+node "foo bar\nbaz"
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_in_closing_line_shallow.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_in_closing_line_shallow.kdl
new file mode 100644
index 0000000..314069e
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_in_closing_line_shallow.kdl
@@ -0,0 +1 @@
+node "  foo bar\n  baz"
diff --git a/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_newline_at_end.kdl b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_newline_at_end.kdl
new file mode 100644
index 0000000..56fe48f
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/expected_kdl/multiline_string_escape_newline_at_end.kdl
@@ -0,0 +1 @@
+node " a"
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/esc_multiple_newlines.kdl b/tests/test_documents/upstream/2.0.0.draft/input/esc_multiple_newlines.kdl
new file mode 100644
index 0000000..f3d91c4
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/esc_multiple_newlines.kdl
@@ -0,0 +1,4 @@
+node "1\
+
+
+2"
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_after_semicolon.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_after_semicolon.kdl
new file mode 100644
index 0000000..59a4ab8
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_after_semicolon.kdl
@@ -0,0 +1,2 @@
+node; \
+node
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_alone.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_alone.kdl
new file mode 100644
index 0000000..57ddad2
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_alone.kdl
@@ -0,0 +1 @@
+\
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_empty_line.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_empty_line.kdl
new file mode 100644
index 0000000..1777a83
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_empty_line.kdl
@@ -0,0 +1,3 @@
+\
+
+node
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_end_of_node.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_end_of_node.kdl
new file mode 100644
index 0000000..87dd42b
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_end_of_node.kdl
@@ -0,0 +1,3 @@
+a \
+
+b
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_in_child_block.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_in_child_block.kdl
new file mode 100644
index 0000000..dfbe682
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_in_child_block.kdl
@@ -0,0 +1,5 @@
+parent {
+    child
+    \ // comment
+    child
+}
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_node.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_node.kdl
index 1c5b5f3..215f634 100644
--- a/tests/test_documents/upstream/2.0.0.draft/input/escline_node.kdl
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_node.kdl
@@ -1,2 +1,3 @@
 node1
+\
 node2
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_node_type.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_node_type.kdl
new file mode 100644
index 0000000..fb22096
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_node_type.kdl
@@ -0,0 +1,2 @@
+\
+(type)node
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/escline_slashdash.kdl b/tests/test_documents/upstream/2.0.0.draft/input/escline_slashdash.kdl
new file mode 100644
index 0000000..8cb0956
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/escline_slashdash.kdl
@@ -0,0 +1,4 @@
+node
+\
+/-
+node
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_double_backslash.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_double_backslash.kdl
new file mode 100644
index 0000000..7289aa9
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_double_backslash.kdl
@@ -0,0 +1,4 @@
+node """
+a\\ b
+a\\\ b
+"""
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_delimiter.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_delimiter.kdl
new file mode 100644
index 0000000..d873e8c
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_delimiter.kdl
@@ -0,0 +1,3 @@
+node """
+\"""
+"""
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_in_closing_line.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_in_closing_line.kdl
new file mode 100644
index 0000000..23a5796
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_in_closing_line.kdl
@@ -0,0 +1,5 @@
+node """
+  foo \
+bar
+  baz
+  \   """
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_in_closing_line_shallow.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_in_closing_line_shallow.kdl
new file mode 100644
index 0000000..fba22a4
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_in_closing_line_shallow.kdl
@@ -0,0 +1,5 @@
+node """
+  foo \
+bar
+  baz
+\   """
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_newline_at_end.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_newline_at_end.kdl
new file mode 100644
index 0000000..045bf6c
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_newline_at_end.kdl
@@ -0,0 +1,4 @@
+node """
+    a
+   \
+"""
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_newline_at_end_fail.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_newline_at_end_fail.kdl
new file mode 100644
index 0000000..692c8c2
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_escape_newline_at_end_fail.kdl
@@ -0,0 +1,4 @@
+node """
+a
+   \
+"""
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_final_whitespace_escape_fail.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_final_whitespace_escape_fail.kdl
new file mode 100644
index 0000000..84310da
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_final_whitespace_escape_fail.kdl
@@ -0,0 +1,4 @@
+node """
+  foo
+  bar\
+  """
\ No newline at end of file
diff --git a/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_non_literal_prefix_fail.kdl b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_non_literal_prefix_fail.kdl
new file mode 100644
index 0000000..bb7f188
--- /dev/null
+++ b/tests/test_documents/upstream/2.0.0.draft/input/multiline_string_non_literal_prefix_fail.kdl
@@ -0,0 +1,4 @@
+node """
+\s escaped prefix
+  literal prefix
+  """