[ruby/reline] Fix a crash when completing after 2nd line

https://github.com/ruby/reline/commit/f9d3480c34

2 files changed, 19 insertions, 0 deletions

diff --git a/test/reline/yamatanooroti/multiline_repl b/test/reline/yamatanooroti/multiline_repl
index f2efdd4eaf..00d4825ee3 100755
--- a/test/reline/yamatanooroti/multiline_repl
+++ b/test/reline/yamatanooroti/multiline_repl
@@ -30,6 +30,11 @@ opt.on('--dynamic-prompt-returns-empty') {
 opt.on('--auto-indent') {
   AutoIndent.new
 }
+opt.on('--complete') {
+  Reline.completion_proc = lambda { |target, preposing = nil, postposing = nil|
+    %w{String ScriptError SyntaxError Signal}
+  }
+}
 opt.parse!(ARGV)
 
 begin
diff --git a/test/reline/yamatanooroti/test_rendering.rb b/test/reline/yamatanooroti/test_rendering.rb
index b17e8bbb01..0ea5b1a25d 100644
--- a/test/reline/yamatanooroti/test_rendering.rb
+++ b/test/reline/yamatanooroti/test_rendering.rb
@@ -809,6 +809,20 @@ begin
       EOC
     end
 
+    def test_completion_journey_2nd_line
+      write_inputrc <<~LINES
+        set editing-mode vi
+      LINES
+      start_terminal(10, 50, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl --complete}, startup_message: 'Multiline REPL.')
+      write("def hoge\n  S\C-n")
+      close
+      assert_screen(<<~'EOC')
+        Multiline REPL.
+        prompt> def hoge
+        prompt>   String
+      EOC
+    end
+
     def write_inputrc(content)
       File.open(@inputrc_file, 'w') do |f|
         f.write content