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-rw-r--r--ext/ripper/lib/ripper/lexer.rb1
-rw-r--r--test/ripper/test_lexer.rb10
2 files changed, 11 insertions, 0 deletions
diff --git a/ext/ripper/lib/ripper/lexer.rb b/ext/ripper/lib/ripper/lexer.rb
index 35ef9b088c4..8222684b654 100644
--- a/ext/ripper/lib/ripper/lexer.rb
+++ b/ext/ripper/lib/ripper/lexer.rb
@@ -130,6 +130,7 @@ class Ripper
@buf = []
@stack = []
super()
+ @buf = @stack.pop unless @stack.empty?
if raise_errors and !@errors.empty?
raise SyntaxError, @errors.map(&:message).join(' ;')
end
diff --git a/test/ripper/test_lexer.rb b/test/ripper/test_lexer.rb
index 9762478c623..79cb194e5b7 100644
--- a/test/ripper/test_lexer.rb
+++ b/test/ripper/test_lexer.rb
@@ -90,6 +90,16 @@ class TestRipper::Lexer < Test::Unit::TestCase
assert_equal expect, Ripper.lex(src).map {|e| e[1]}
end
+ def test_stack_at_on_heredoc_beg
+ src = "a <<b"
+ expect = %I[
+ on_ident
+ on_sp
+ on_heredoc_beg
+ ]
+ assert_equal expect, Ripper.lex(src).map {|e| e[1]}
+ end
+
def test_slice
assert_equal "string\#{nil}\n",
Ripper.slice(%(<<HERE\nstring\#{nil}\nHERE), "heredoc_beg .*? nl $(.*?) heredoc_end", 1)