From 876540f593218b93d92b7d2a3c37aeab4e2ac2d6 Mon Sep 17 00:00:00 2001
From: Brujo Benavides <fernando.benavides@adroll.com>
Date: Thu, 8 Apr 2021 11:39:40 +0200
Subject: [PATCH] [#239] Fix #239: Attributes with strings (#241)

---
 src/formatters/default_formatter.erl   | 2 ++
 test_app/after/src/strings/strings.erl | 2 ++
 test_app/src/strings/strings.erl       | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/src/formatters/default_formatter.erl b/src/formatters/default_formatter.erl
index 09c5392..39afb01 100644
--- a/src/formatters/default_formatter.erl
+++ b/src/formatters/default_formatter.erl
@@ -1046,6 +1046,8 @@ lay_string(Node, Ctxt) ->
         end,
     lay_string_lines(string_lines(S), Ctxt).
 
+interpret_string(undefined) ->
+    undefined;
 interpret_string(S) ->
     {ok, Tokens, _} = erl_scan:string(S),
     erl_parse:parse_exprs(Tokens ++ [{dot, 0}]).
diff --git a/test_app/after/src/strings/strings.erl b/test_app/after/src/strings/strings.erl
index 376bca9..f0ed846 100644
--- a/test_app/after/src/strings/strings.erl
+++ b/test_app/after/src/strings/strings.erl
@@ -4,6 +4,8 @@
 
 -format #{inline_expressions => true}.
 
+-attr({with, "a string"}).
+
 all() ->
     heredoc(), superlong(), repeat(), multiple_calls(), characters().
 
diff --git a/test_app/src/strings/strings.erl b/test_app/src/strings/strings.erl
index cd5c9b1..10426b4 100644
--- a/test_app/src/strings/strings.erl
+++ b/test_app/src/strings/strings.erl
@@ -4,6 +4,8 @@
 
 -format #{inline_expressions => true}.
 
+-attr({with, "a string"}).
+
 all() ->
   heredoc(),
   superlong(),