remove unnecessary unshift

* ext/pathname/lib/pathname.rb (Pathname#join): remove unnecessary unshift.
* test/pathname/test_pathname.rb (TestPathname#test_join): add tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 2 deletions

diff --git a/ext/pathname/lib/pathname.rb b/ext/pathname/lib/pathname.rb
index 20c92e23dc..bbcb5e4e2a 100644
--- a/ext/pathname/lib/pathname.rb
+++ b/ext/pathname/lib/pathname.rb
@@ -384,7 +384,6 @@ class Pathname
   #       #=> true
   #
   def join(*args)
-    args.unshift self
     result = args.pop
     result = Pathname.new(result) unless Pathname === result
     return result if result.absolute?
@@ -393,7 +392,7 @@ class Pathname
       result = arg + result
       return result if result.absolute?
     }
-    result
+    self + result
   end
 
   #