From 2f66c443d79bb3a2d5518dbe58ca86885bc23d5c Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Fri, 29 Nov 2019 17:46:13 +0900
Subject: [PATCH] Support argument for ErrNotRegular

---
 lib/matrix.rb | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/matrix.rb b/lib/matrix.rb
index b4d1be33bb..cf1d532693 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -28,8 +28,12 @@ module ExceptionForMatrix # :nodoc:
   end
 
   class ErrNotRegular < StandardError
-    def initialize
-      super("Not Regular Matrix")
+    def initialize(val = nil)
+      if val
+        super(val)
+      else
+        super("Not Regular Matrix")
+      end
     end
   end