From fc2a121c7c56ec29cddc426910aa1ac4cd3f5edc Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Sun, 3 May 2020 14:36:33 +0900
Subject: [ruby/reline] If history-size isn't numeric, it should be 500

https://tiswww.case.edu/php/chet/readline/readline.html#IDX25

> If an attempt is made to set history-size to a non-numeric value, the maximum
> number of history entries will be set to 500.

https://github.com/ruby/reline/commit/acf0437280
---
 lib/reline/config.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/reline/config.rb b/lib/reline/config.rb
index deca11f0ab..206be5be0e 100644
--- a/lib/reline/config.rb
+++ b/lib/reline/config.rb
@@ -210,7 +210,11 @@ class Reline::Config
   def bind_variable(name, value)
     case name
     when 'history-size'
-      @history_size = value.to_i
+      begin
+        @history_size = Integer(value)
+      rescue ArgumentError
+        @history_size = 500
+      end
     when 'bell-style'
       @bell_style =
         case value
-- 
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