Added  multiline string corpus test
@@ -1069,3 +1069,31 @@ makePows start base =
)
)
)
+
+=====================================
+Multiline string as parameter
+=====================================
+
+result =
+ interpolate """module {0} exposing (..)
+placeholder : String
+placeholder =
+ ""
+"""
+
+---
+(file
+ (value_declaration
+ (function_declaration_left (lower_case_identifier))
+ (eq)
+ (function_call_expr
+ (value_expr (value_qid (lower_case_identifier)))
+ (string_constant_expr
+ (open_quote)
+ (regular_string_part)
+ (regular_string_part)
+ (close_quote)
+ )
+ )
+ )
+)
