diff --git a/syntaxes/r.json b/syntaxes/r.json
index 9bb60f2..d18441d 100644
--- a/syntaxes/r.json
+++ b/syntaxes/r.json
@@ -40,6 +40,9 @@
     },
     {
       "include": "#function-calls"
+    },
+    {
+      "match": "(?:[a-zA-Z._][\\w.]*|`[^`]+`)"
     }
   ],
   "repository": {
diff --git a/syntaxes/r.yaml b/syntaxes/r.yaml
index c78da4b..1aff4c2 100644
--- a/syntaxes/r.yaml
+++ b/syntaxes/r.yaml
@@ -25,6 +25,7 @@ patterns:
   - include: "#lambda-functions"
   - include: "#builtin-functions"
   - include: "#function-calls"
+  - match: '{{var}}'
 
 repository:
   accessor:
diff --git a/tests/testdata/basics.R b/tests/testdata/basics.R
index 0dcfc01..dcea8d2 100644
--- a/tests/testdata/basics.R
+++ b/tests/testdata/basics.R
@@ -152,3 +152,7 @@ foo::median
 my_vector |>
 #         ^^ keyword.operator.pipe.r
   foo()
+
+# issue #1
+foo(x = `#afd`)
+#        ^^^^ -comment