[ruby/reline] Fix pasting tab-indented code crash

(https://github.com/ruby/reline/pull/630)

https://github.com/ruby/reline/commit/90155fd0d9

2 files changed, 30 insertions, 0 deletions

diff --git a/test/reline/yamatanooroti/multiline_repl b/test/reline/yamatanooroti/multiline_repl
index e2a900b251..edf18ea796 100755
--- a/test/reline/yamatanooroti/multiline_repl
+++ b/test/reline/yamatanooroti/multiline_repl
@@ -153,6 +153,10 @@ opt.on('--autocomplete') {
     %w{String Struct Symbol ScriptError SyntaxError Signal}.select{ |c| c.start_with?(target) }
   }
 }
+opt.on('--autocomplete-empty') {
+  Reline.autocompletion = true
+  Reline.completion_proc = lambda { |target, preposing = nil, postposing = nil| [] }
+}
 opt.on('--autocomplete-long') {
   Reline.autocompletion = true
   Reline.completion_proc = lambda { |target, preposing = nil, postposing = nil|
diff --git a/test/reline/yamatanooroti/test_rendering.rb b/test/reline/yamatanooroti/test_rendering.rb
index 670432d86b..b61c84527d 100644
--- a/test/reline/yamatanooroti/test_rendering.rb
+++ b/test/reline/yamatanooroti/test_rendering.rb
@@ -1213,6 +1213,32 @@ begin
       EOC
     end
 
+    def test_autocomplete_empty_string
+      start_terminal(5, 30, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl --autocomplete}, startup_message: 'Multiline REPL.')
+      write("\C-i")
+      close
+      assert_screen(<<~'EOC')
+        Multiline REPL.
+        prompt> String
+                String     █
+                Struct     ▀
+                Symbol
+      EOC
+    end
+
+    def test_paste_code_with_tab_indent_does_not_fail
+      start_terminal(5, 30, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl --autocomplete-empty}, startup_message: 'Multiline REPL.')
+      write("2.times do\n\tputs\n\tputs\nend")
+      close
+      assert_screen(<<~'EOC')
+        Multiline REPL.
+        prompt> 2.times do
+        prompt> puts
+        prompt> puts
+        prompt> end
+      EOC
+    end
+
     def test_autocomplete_after_2nd_line
       start_terminal(20, 30, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl --autocomplete}, startup_message: 'Multiline REPL.')
       write("def hoge\n  Str")