From d2a03300d33ef6b24fd4492aa3917ce41b4512ae Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 5 Mar 2018 08:32:46 +0000
Subject: parse.y: named whitespaces

* parse.y: named escaped whitespaces to show unexpected character.
  bare whitespaces should not appear outside of word_list.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62663 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_parse.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index e843c66242..cd1c5a3ecc 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -1129,6 +1129,27 @@ x = __ENCODING__
     end
   end
 
+  def test_whitespace_warning
+    assert_raise_with_message(SyntaxError, /backslash/) do
+      eval("\\foo")
+    end
+    assert_raise_with_message(SyntaxError, /escaped space/) do
+      eval("\\ ")
+    end
+    assert_raise_with_message(SyntaxError, /escaped horizontal tab/) do
+      eval("\\\t")
+    end
+    assert_raise_with_message(SyntaxError, /escaped form feed/) do
+      eval("\\\f")
+    end
+    assert_raise_with_message(SyntaxError, /escaped carriage return/) do
+      assert_warn(/middle of line/) {eval("\\\r")}
+    end
+    assert_raise_with_message(SyntaxError, /escaped vertical tab/) do
+      eval("\\\v")
+    end
+  end
+
 =begin
   def test_past_scope_variable
     assert_warning(/past scope/) {catch {|tag| eval("BEGIN{throw tag}; tap {a = 1}; a")}}
-- 
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