From 90c51ca39170030b2ea0611bcbb435b76915a287 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 1 Jul 2019 20:45:53 +0900
Subject: New indent must be non-negative number

---
 lib/reline/line_editor.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index f068a3c821..bc795b8a3d 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -796,7 +796,7 @@ class Reline::LineEditor
       new_lines = whole_lines
     end
     new_indent = @auto_indent_proc.(new_lines, @line_index, @byte_pointer, @check_new_auto_indent)
-    if new_indent
+    if new_indent&.>= 0
       md = new_lines[@line_index].match(/\A */)
       prev_indent = md[0].count(' ')
       if @check_new_auto_indent
-- 
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