parse.y: add ellipsis

* parse.y (parser_yyerror): add ellipsis properly when error line
  is truncated.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59194 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index d869fbd7ab..a604d3b193 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -1013,6 +1013,15 @@ x = __ENCODING__
     end
   end
 
+  def test_truncated_source_line
+    e = assert_raise_with_message(SyntaxError, /unexpected tIDENTIFIER/) do
+      eval("'0123456789012345678901234567890123456789' abcdefghijklmnopqrstuvwxyz0123456789 0123456789012345678901234567890123456789")
+    end
+    line = e.message.lines[1]
+    assert_operator(line, :start_with?, "...")
+    assert_operator(line, :end_with?, "...\n")
+  end
+
 =begin
   def test_past_scope_variable
     assert_warning(/past scope/) {catch {|tag| eval("BEGIN{throw tag}; tap {a = 1}; a")}}