$ can be in an identifier now

src/compiler/tests/literals.test.ts

@@ -258,7 +258,7 @@ describe('curly strings', () => {
   test('interpolation edge cases', () => {
     expect(`{[a=1 b=2 c={wild}]}`).toEvaluateTo(`[a=1 b=2 c={wild}]`)
     expect(`a = 1;b = 2;c = 3;{$a $b $c}`).toEvaluateTo(`1 2 3`)
-    expect(`a = 1;b = 2;c = 3;{$a$b$c}`).toEvaluateTo(`123`)
+    expect(`a = 1;b = 2;c = 3;{$(a)$(b)$(c)}`).toEvaluateTo(`123`)
   })
 })
 

src/parser/curlyTokenizer.ts

@@ -38,7 +38,7 @@ export const tokenizeCurlyString = (value: string): (string | [string, SyntaxNod
 
         const input = value.slice(start + 2, pos) // skip '$('
         tokens.push([input, parse(input)])
-        start = ++pos // skip ')'
+        start = pos + 1 // start after ')'
       } else {
         char = value[++pos]
         if (!char) break