diff --git a/test/tests/syntax-errors.json b/test/tests/syntax-errors.json
index 9e2305978..34d9aa484 100644
--- a/test/tests/syntax-errors.json
+++ b/test/tests/syntax-errors.json
@@ -122,6 +122,9 @@
     {
       "src": "bad {:placeholder @attribute=@foo}"
     },
+    {
+      "src": "{ @misplaced = attribute }"
+    },
     {
       "src": "no {placeholder end"
     },
diff --git a/test/tests/syntax.json b/test/tests/syntax.json
index 076ae5030..9425b538b 100644
--- a/test/tests/syntax.json
+++ b/test/tests/syntax.json
@@ -7,28 +7,34 @@
   },
   "tests": [
     {
-      "src": "hello",
-      "exp": "hello"
+      "description": "message -> simple-message -> <empty>",
+      "src": "",
+      "exp": ""
     },
     {
-      "src": "hello {world}",
-      "exp": "hello world"
+      "description": "message -> simple-message -> simple-start pattern -> simple-start-char",
+      "src": "a",
+      "exp": "a"
     },
     {
-      "src": "hello { world\t\n}",
-      "exp": "hello world"
+      "description": "message -> simple-message -> simple-start pattern -> simple-start-char pattern -> ...",
+      "src": "hello",
+      "exp": "hello"
     },
     {
-      "src": "hello {\u3000world\r}",
-      "exp": "hello world"
+      "description": "message -> simple-message -> simple-start pattern -> escaped-char",
+      "src": "\\\\",
+      "exp": "\\"
     },
     {
-      "src": "hello {|world|}",
+      "description": "message -> simple-message -> simple-start pattern -> simple-start-char pattern -> ... -> simple-start-char *text-char placeholder",
+      "src": "hello {world}",
       "exp": "hello world"
     },
     {
-      "src": "hello {||}",
-      "exp": "hello "
+      "description": "message -> simple-message -> simple-start pattern -> simple-start-char pattern -> ... -> simple-start-char *text-char placeholder",
+      "src": "hello {|world|}",
+      "exp": "hello world"
     },
     {
       "src": "hello {$place}",
@@ -59,6 +65,528 @@
       ],
       "exp": "hello {$place}"
     },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> expression -> literal-expression -> \"{\" literal \"}\"",
+      "src": "{a}",
+      "exp": "a"
+    },
+    {
+      "description": "... -> literal-expression -> \"{\" literal s annotation \"}\" -> \"{\" literal s function \"}\" -> \"{\" literal s \":\" identifier \"}\" -> \"{\" literal s \":\" name \"}\"",
+      "src": "{a :f}",
+      "exp": "{|a|}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... -> \"{\" literal s \":\" namespace \":\" name \"}\"",
+      "src": "{a :u:f}",
+      "exp": "{|a|}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> expression -> variable-expression -> \"{\" variable \"}\"",
+      "src": "{$x}",
+      "exp": "{$x}",
+      "expErrors": [{ "type": "unresolved-variable" }]
+    },
+    {
+      "description": "... -> variable-expression -> \"{\" variable s annotation \"}\" -> \"{\" variable s function \"}\" -> \"{\" variable s \":\" identifier \"}\" -> \"{\" variable s \":\" name \"}\"",
+      "src": "{$x :f}",
+      "exp": "{$x}",
+      "expErrors": [{ "type": "unresolved-variable" }, { "type": "unknown-function" }]
+    },
+    {
+      "description": "... -> \"{\" variable s \":\" namespace \":\" name \"}\"",
+      "src": "{$x :u:f}",
+      "exp": "{$x}",
+      "expErrors": [{ "type": "unresolved-variable" }, { "type": "unknown-function" }]
+    },
+    {
+      "description": "... -> annotation-expression -> function -> \"{\" \":\" namespace \":\" name \"}\"",
+      "src": "{:u:f}",
+      "exp": "{:u:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... -> annotation-expression -> function -> \"{\" \":\" name \"}\"",
+      "src": "{:f}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "message -> complex-message -> complex-body -> quoted-pattern -> \"{{\" pattern \"}}\" -> \"{{\"\"}}\"",
+      "src": "{{}}",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"#\" identifier \"}\"", 
+      "src": "{#tag}",
+      "exp": "",
+      "expParts": [
+        {
+          "type": "markup",
+          "kind": "open",
+          "name": "tag"
+        }
+      ]
+    },
+    {
+      "description": "message -> complex-message -> *(declaration [s]) complex-body -> declaration complex-body -> input-declaration complex-body -> input variable-expression complex-body",
+      "src": ".input{$x}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "message -> complex-message -> *(declaration [s]) complex-body -> declaration declaration complex-body -> input-declaration input-declaration complex-body -> input variable-expression input variable-expression complex-body",
+      "src": ".input{$x}.input{$y}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "message -> complex-message -> *(declaration [s]) complex-body -> declaration s declaration complex-body -> input-declaration s input-declaration complex-body -> input variable-expression s input variable-expression complex-body",
+      "src": ".input{$x} .input{$y}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "message -> complex-message -> *(declaration [s]) complex-body s -> complex-body s",
+      "src": "{{}} ",
+      "exp": ""
+    },
+    {
+      "description": "message -> complex-message -> *(declaration [s]) complex-body -> declaration declaration complex-body -> local-declaration input-declaration complex-body -> local s variable [s] \"=\" [s] expression input variable-expression complex-body",
+      "src": ".local $x ={a}.input{$y}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "message -> complex-message -> *(declaration [s]) complex-body -> declaration complex-body -> reserved-statement  complex-body -> reserved-keyword expression -> \".\" name expression complex-body",
+      "src": ".n{a}{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unsupported-statement" } ]
+    },
+    {
+      "description": "message -> complex-message -> complex-body -> matcher -> match-statement variant -> match selector key quoted-pattern -> \".match\" expression literal quoted-pattern",
+      "src": ".match{a :f}a{{}}*{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unknown-function" } ]
+    },
+    {
+      "description": "... input-declaration -> input s variable-expression ...",
+      "src": ".input {$x}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "... local-declaration -> local s variable s \"=\" expression ...",
+      "src": ".local $x ={a}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "... local-declaration -> local s variable \"=\" s expression ...",
+      "src": ".local $x= {a}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "... local-declaration -> local s variable s \"=\" expression ...",
+      "src": ".local $x = {a}{{}}",
+      "exp": ""
+    },
+    {
+      "description": "... matcher -> match-statement [s] variant -> match 1*([s] selector) variant -> match selector selector variant -> match selector selector variant key s key quoted-pattern",
+      "src": ".match{a :f}{b :f}a b{{}}* *{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unknown-function" } ]
+    },
+    {
+      "description": "... matcher -> match-statement [s] variant -> match 1*([s] selector) variant -> match selector variant variant ...",
+      "src": ".match{a :f}a{{}}b{{}}*{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unknown-function" } ]
+    },
+    {
+      "description": "... variant -> key s quoted-pattern -> ...",
+      "src": ".match{a :f}a {{}}*{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unknown-function" } ]
+    },
+    {
+      "description": "... variant -> key s key s quoted-pattern -> ...",
+      "src": ".match{a :f}{b :f}a b {{}}* *{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unknown-function" } ]
+    },
+    {
+      "description": "... key -> \"*\" ...",
+      "src": ".match{a :f}*{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unknown-function" } ]
+    },
+    {
+      "description": "simple-message -> simple-start pattern -> placeholder -> expression -> literal-expression -> \"{\" s literal \"}\"",
+      "src": "{ a}",
+      "exp": "a"
+    },
+    {
+      "description": "... literal-expression -> \"{\" literal s attribute \"}\" -> \"{\" literal s \"@\" identifier \"}\"",
+      "src": "{a @c}",
+      "exp": "a"
+    },
+    {
+      "description": "... -> literal-expression -> \"{\" literal s \"}\"",
+      "src": "{a }",
+      "exp": "a"
+    },
+    {
+      "description": "simple-message -> simple-start pattern -> placeholder -> expression -> variable-expression -> \"{\" s variable \"}\"",
+      "src": "{ $x}",
+      "exp": "{$x}",
+      "expErrors": [{ "type": "unresolved-variable" }]
+    },
+    {
+      "description": "... variable-expression -> \"{\" variable s attribute \"}\" -> \"{\" variable s \"@\" identifier \"}\"",
+      "src": "{$x @c}",
+      "exp": "{$x}",
+      "expErrors": [{ "type": "unresolved-variable" }]
+    },
+    {
+      "description": "... -> variable-expression -> \"{\" variable s \"}\"",
+      "src": "{$x }",
+      "exp": "{$x}",
+      "expErrors": [{ "type": "unresolved-variable" }]
+    },
+    {
+      "description": "simple-message -> simple-start pattern -> placeholder -> expression -> annotation-expression -> \"{\" s annotation \"}\"",
+      "src": "{ :f}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... annotation-expression -> \"{\" annotation s attribute \"}\" -> \"{\" annotation s \"@\" identifier \"}\"",
+      "src": "{:f @c}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... -> annotation-expression -> \"{\" annotation s \"}\"",
+      "src": "{:f }",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... annotation -> private-use-annotation -> private-start",
+      "src": "{^}",
+      "exp": "{^}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... annotation -> reserved-annotation -> reserved-annotation-start",
+      "src": "{!}",
+      "exp": "{!}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" s \"#\" identifier \"}\"", 
+      "src": "{ #a}",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"#\" identifier option \"}\" -> \"{\" \"#\" identifier identifier \"=\" literal \"}\"",
+      "src": "{#tag foo=bar}",
+      "exp": "",
+      "expParts": [
+        {
+          "type": "markup",
+          "kind": "open",
+          "name": "tag",
+          "options": {
+            "foo": "bar"
+          }
+        }
+      ]
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"#\" identifier attribute \"}\" -> \"{\" \"#\" identifier identifier \"=\" literal \"}\"",
+      "src": "{#a @c}",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"#\" identifier s \"}\" -> \"{\" \"#\" identifier identifier \"=\" literal \"}\"",
+      "src": "{#a }",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"#\" identifier \"/\" \"}\" -> \"{\" \"#\" identifier identifier \"=\" literal \"}\"",
+      "src": "{#a/}",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"/\" identifier \"}\"",
+      "src": "{/a}",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" s \"/\" identifier \"}\"",
+      "src": "{ /a}",
+      "exp": ""
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"/\" identifier option \"}\"",
+      "src": "{/tag foo=bar}",
+      "exp": "",
+      "expParts": [
+        {
+          "type": "markup",
+          "kind": "close",
+          "name": "tag",
+          "options": {
+            "foo": "bar"
+          }
+        }
+      ]
+    },
+    {
+      "description": "message -> simple-message -> simple-start pattern -> placeholder -> markup -> \"{\" \"/\" identifier s \"}\"",
+      "src": "{/a }",
+      "exp": ""
+    },
+    {
+      "description": "... annotation-expression -> function -> \":\" identifier option",
+      "src": "{:f k=v}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... option -> identifier s \"=\" literal",
+      "src": "{:f k =v}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... option -> identifier \"=\" s literal",
+      "src": "{:f k= v}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... option -> identifier s \"=\" s literal",
+      "src": "{:f k = v}",
+      "exp": "{:f}",
+      "expErrors": [{ "type": "unknown-function" }]
+    },
+    {
+      "description": "... attribute -> \"@\" identifier \"=\" literal ...",
+      "src": "{a @c=d}",
+      "exp": "a"
+    },
+    {
+      "description": "... attribute -> \"@\" identifier s \"=\" literal ...",
+      "src": "{a @c =d}",
+      "exp": "a"
+    },
+    {
+      "description": "... attribute -> \"@\" identifier \"=\" s literal ...",
+      "src": "{a @c= d}",
+      "exp": "a"
+    },
+    {
+      "description": "... attribute -> \"@\" identifier s \"=\" s literal ...",
+      "src": "{a @c = d}",
+      "exp": "a"
+    },
+    {
+      "description": "... attribute -> \"@\" identifier s \"=\" s variable ...",
+      "src": "{42 @foo=$bar}",
+      "exp": "42",
+      "expParts": [
+        {
+          "type": "string",
+          "source": "|42|",
+          "value": "42"
+        }
+      ],
+      "exp": "42"
+    },
+    {
+      "description": "... literal -> quoted-literal -> \"|\" \"|\" ...",
+      "src": "{||}",
+      "exp": ""
+    },
+    {
+      "description": "... quoted-literal -> \"|\" quoted-char \"|\"",
+      "src": "{|a|}",
+      "exp": "a"
+    },
+    {
+      "description": "... quoted-literal -> \"|\" escaped-char \"|\"",
+      "src": "{|\\\\|}",
+      "exp": "\\"
+    },
+    {
+      "description": "... quoted-literal -> \"|\" quoted-char escaped-char \"|\"",
+      "src": "{|a\\\\|}",
+      "exp": "a\\"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30",
+      "src": "{0}",
+      "exp": "0"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> \"-\" %x30",
+      "src": "{-0}",
+      "exp": "-0"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> (%x31-39 *DIGIT) -> %x31",
+      "src": "{1}",
+      "exp": "1"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> (%x31-39 *DIGIT) -> %x31 DIGIT -> 11",
+      "src": "{11}",
+      "exp": "11"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30 \".\" 1*DIGIT -> 0 \".\" 1",
+      "src": "{0.1}",
+      "exp": "0.1"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30 \".\" 1*DIGIT -> %x30 \".\" DIGIT DIGIT -> 0 \".\" 1 2",
+      "src": "{0.12}",
+      "exp": "0.12"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30 %i\"e\" 1*DIGIT -> %x30 \"e\" DIGIT",
+      "src": "{0e1}",
+      "exp": "0e1"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30 %i\"e\" 1*DIGIT -> %x30 \"E\" DIGIT",
+      "src": "{0E1}",
+      "exp": "0E1"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30 %i\"e\" \"-\" 1*DIGIT ...",
+      "src": "{0E-1}",
+      "exp": "0E-1"
+    },
+    {
+      "description": "... unquoted-literal -> number-literal -> %x30 %i\"e\" \"+\" 1*DIGIT ...",
+      "src": "{0E-1}",
+      "exp": "0E-1"
+    },
+    {
+      "description": "... reserved-statement -> reserved-keyword s reserved-body 1*([s] expression) -> reserved-keyword s reserved-body expression -> \".\" name s reserved-body-part expression -> \".\" name s reserved-char expression ...",
+      "src": ".n .{a}{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unsupported-statement" } ]
+    },
+    {
+      "description": "... reserved-statement -> reserved-keyword reserved-body 1*([s] expression) -> reserved-keyword s reserved-body s expression -> \".\" name s reserved-body-part expression -> \".\" name s reserved-char expression ...",
+      "src": ".n. {a}{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unsupported-statement" } ]
+    },
+    {
+      "description": "... reserved-statement -> reserved-keyword reserved-body 1*([s] expression) -> reserved-keyword reserved-body expression expression -> \".\" name reserved-body-part expression expression -> \".\" name s reserved-char expression expression ...",
+      "src": ".n.{a}{b}{{}}",
+      "exp": "",
+      "expErrors": [ { "type": "unsupported-statement" } ]
+    },
+    {
+      "description": "... reserved-annotation -> reserved-annotation-start reserved-body -> \"!\" reserved-body-part -> \"!\" reserved-char ...",
+      "src": "{!.}",
+      "exp": "{!}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation -> reserved-annotation-start s reserved-body -> \"!\" s reserved-body-part -> \"!\" s reserved-char ...",
+      "src": "{! .}",
+      "exp": "{!}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{%}",
+      "exp": "{%}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{*}",
+      "exp": "{*}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{+}",
+      "exp": "{+}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{<}",
+      "exp": "{<}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{>}",
+      "exp": "{>}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{?}",
+      "exp": "{?}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation-start ...",
+      "src": "{~}",
+      "exp": "{~}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... private-use-annotation -> private-start reserved-body -> \"^\" reserved-body-part -> \"^\" reserved-char ...",
+      "src": "{^.}",
+      "exp": "{^}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... private-use-annotation -> private-start s reserved-body -> \"^\" s reserved-body-part -> \"^\" s reserved-char ...",
+      "src": "{^ .}",
+      "exp": "{^}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... private-start ...",
+      "src": "{&}",
+      "exp": "{&}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation -> reserved-annotation-start reserved-body -> \"!\" reserved-body-part reserved-body-part -> \"!\" reserved-char escaped-char ...",
+      "src": "{!.\\{}",
+      "exp": "{!}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation -> reserved-annotation-start reserved-body -> \"!\" reserved-body-part s reserved-body-part -> \"!\" reserved-char s escaped-char ...",
+      "src": "{!. \\{}",
+      "exp": "{!}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "description": "... reserved-annotation -> reserved-annotation-start reserved-body -> \"!\" reserved-body-part -> \"!\" quoted-literal ...",
+      "src": "{!|a|}",
+      "exp": "{!}",
+      "expErrors": [{ "type": "unsupported-expression" }]
+    },
+    {
+      "src": "hello { world\t\n}",
+      "exp": "hello world"
+    },
+    {
+      "src": "hello {\u3000world\r}",
+      "exp": "hello world"
+    },
     {
       "src": "{$one} and {$two}",
       "params": [
@@ -160,17 +688,6 @@
       "src": ".local $x = {42} .local $y = {$x} {{{$x} {$y}}}",
       "exp": "42 42"
     },
-    {
-      "src": "{#tag}",
-      "exp": "",
-      "expParts": [
-        {
-          "type": "markup",
-          "kind": "open",
-          "name": "tag"
-        }
-      ]
-    },
     {
       "src": "{#tag}content",
       "exp": "content",
@@ -221,20 +738,6 @@
         }
       ]
     },
-    {
-      "src": "{#tag foo=bar}",
-      "exp": "",
-      "expParts": [
-        {
-          "type": "markup",
-          "kind": "open",
-          "name": "tag",
-          "options": {
-            "foo": "bar"
-          }
-        }
-      ]
-    },
     {
       "src": "{#tag foo=bar/}",
       "exp": "",
@@ -270,20 +773,6 @@
         }
       ]
     },
-    {
-      "src": "{/tag foo=bar}",
-      "exp": "",
-      "expParts": [
-        {
-          "type": "markup",
-          "kind": "close",
-          "name": "tag",
-          "options": {
-            "foo": "bar"
-          }
-        }
-      ]
-    },
     {
       "src": "{42 @foo @bar=13}",
       "exp": "42",
@@ -295,17 +784,6 @@
         }
       ]
     },
-    {
-      "src": "{42 @foo=$bar}",
-      "exp": "42",
-      "expParts": [
-        {
-          "type": "string",
-          "source": "|42|",
-          "value": "42"
-        }
-      ]
-    },
     {
       "src": "foo {+reserved}",
       "exp": "foo {+}",
@@ -408,6 +886,21 @@
         }
       ]
     },
+    {
+      "src": ".l $y = {|bar|} {{}}",
+      "exp": "",
+      "expParts": [
+        {
+          "type": "literal",
+          "value": "bar"
+        }
+      ],
+      "expErrors": [
+        {
+          "type": "unsupported-statement"
+        }
+      ]
+    },
     {
       "src": "{{trailing whitespace}} \n",
       "exp": "trailing whitespace"