From 972cc993cad8bd32d0468c082f7e410aabd1e8cb Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Wed, 6 Oct 2021 02:56:14 +0900
Subject: [PATCH] Cut off the excess on narrow screen

---
 lib/reline/line_editor.rb                   |  4 ++++
 test/reline/yamatanooroti/test_rendering.rb | 26 +++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index f68018e85b..008085c36e 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -709,6 +709,10 @@ def add_dialog_proc(name, p, context = nil)
     end
     Reline::IOGate.hide_cursor
     dialog.width += @block_elem_width if dialog.scrollbar_pos
+    if dialog.column < 0
+      dialog.column = 0
+      dialog.width = @screen_size.last
+    end
     reset_dialog(dialog, old_dialog)
     move_cursor_down(dialog.vertical_offset)
     Reline::IOGate.move_cursor_column(dialog.column)
diff --git a/test/reline/yamatanooroti/test_rendering.rb b/test/reline/yamatanooroti/test_rendering.rb
index 0bcd70700c..78128a3fcf 100644
--- a/test/reline/yamatanooroti/test_rendering.rb
+++ b/test/reline/yamatanooroti/test_rendering.rb
@@ -1072,6 +1072,32 @@ def test_dialog_callback_returns_nil
       EOC
     end
 
+    def test_dialog_narrower_than_screen
+      start_terminal(20, 11, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl --autocomplete-long}, startup_message: 'Multiline REPL.')
+      write('S' + "\C-i" * 3)
+      close
+      assert_screen(<<~'EOC')
+        Multiline R
+        EPL.
+        prompt> Sym
+        String
+        Struct    █
+        Symbol    █
+        StopIterat█
+        SystemCall█
+        SystemExit█
+        SystemStac█
+        ScriptErro█
+        SyntaxErro█
+        Signal    █
+        SizedQueue█
+        Set
+        SecureRand
+        Socket
+        StringIO
+      EOC
+    end
+
     def test_rerender_argument_prompt_after_pasting
       start_terminal(20, 30, %W{ruby -I#{@pwd}/lib #{@pwd}/test/reline/yamatanooroti/multiline_repl}, startup_message: 'Multiline REPL.')
       write('abcdef')