fix(style): multiple lines for multiple IO types

Author: blindFS

languages/nu.scm

@@ -160,7 +160,7 @@
 ) @prepend_space
 
 (returns
-  type: _ @append_space
+  type: _ @append_spaced_softline
   .
   type: _
 )

test/expected_decl.nu

@@ -39,6 +39,12 @@ def "hi there" [where: string]: nothing -> record<foo: table<baz: float>, bar: i
   }
 }
 
+## multiple input/output types
+def foo []: [
+  int -> int
+  nothing -> int
+] { 1 }
+
 # decl_use
 use greetings.nu hello
 export use greetings.nu *

test/input_decl.nu

@@ -34,6 +34,11 @@ def "hi there" [where: string]: nothing -> record<foo: table<baz: float>,  bar:
     bar: 1}
 }
 
+## multiple input/output types
+def foo []: [
+  int -> int, nothing -> int
+] { 1 }
+
 # decl_use
 use greetings.nu hello
 export use greetings.nu *