From 90d244aded4c1cbc0289b910a0e062e033ee791f Mon Sep 17 00:00:00 2001
From: marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 24 Oct 2009 06:04:56 +0000
Subject: * lib/matrix (column): handle negative arguments. cf
 [ruby-core:23598]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25451 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/matrix.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'lib/matrix.rb')

diff --git a/lib/matrix.rb b/lib/matrix.rb
index d14fdef4f7..a8d9b98ff6 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -309,13 +309,13 @@ class Matrix
   #
   def column(j) # :yield: e
     if block_given?
-      return self if j >= column_size
+      return self if j >= column_size || j < -column_size
       row_size.times do |i|
         yield @rows[i][j]
       end
       self
     else
-      return nil if j >= column_size
+      return nil if j >= column_size || j < -column_size
       col = (0 ... row_size).collect {|i|
         @rows[i][j]
       }
-- 
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