10 files changed, 13 insertions, 12 deletions
diff --git a/mrbgems/mruby-complex/mrbgem.rake b/mrbgems/mruby-complex/mrbgem.rake
index 19612e74d..8f782ae18 100644
--- a/mrbgems/mruby-complex/mrbgem.rake
+++ b/mrbgems/mruby-complex/mrbgem.rake
@@ -3,8 +3,5 @@ MRuby::Gem::Specification.new('mruby-complex') do |spec|
   spec.author  = 'mruby developers'
   spec.summary = 'Complex class'
 
-  spec.add_dependency 'mruby-metaprog', core: 'mruby-metaprog'
-  spec.add_dependency 'mruby-object-ext', core: 'mruby-object-ext'
-  spec.add_dependency 'mruby-numeric-ext', core: 'mruby-numeric-ext'
   spec.add_dependency 'mruby-math', core: 'mruby-math'
 end
diff --git a/mrbgems/mruby-complex/mrblib/complex.rb b/mrbgems/mruby-complex/mrblib/complex.rb
index f32b84c8b..ea8530919 100644
--- a/mrbgems/mruby-complex/mrblib/complex.rb
+++ b/mrbgems/mruby-complex/mrblib/complex.rb
@@ -8,7 +8,7 @@ class Complex < Numeric
   end
 
   def to_s
-    "#{real}#{'+' unless imaginary.negative?}#{imaginary}i"
+    "#{real}#{'+' unless imaginary < 0}#{imaginary}i"
   end
 
   def +@
@@ -56,7 +56,7 @@ class Complex < Numeric
     if rhs.is_a? Complex
       real == rhs.real && imaginary == rhs.imaginary
     elsif rhs.is_a? Numeric
-      imaginary.zero? && real == rhs
+      imaginary == 0 && real == rhs
     end
   end
 
@@ -106,14 +106,14 @@ class Complex < Numeric
 
   [Fixnum, Float].each do |cls|
     [:+, :-, :*, :/, :==].each do |op|
-      cls.instance_exec do
+      cls.instance_eval do
         original_operator_name = "__original_operator_#{op}_complex"
         alias_method original_operator_name, op
         define_method op do |rhs|
           if rhs.is_a? Complex
-            Complex(self).send(op, rhs)
+            Complex(self).__send__(op, rhs)
           else
-            send(original_operator_name, rhs)
+            __send__(original_operator_name, rhs)
           end
         end
       end
diff --git a/mrbgems/mruby-io/README.md b/mrbgems/mruby-io/README.md
index ccf56f970..2c5b762d8 100644
--- a/mrbgems/mruby-io/README.md
+++ b/mrbgems/mruby-io/README.md
@@ -171,6 +171,7 @@ Add the line below to your `build_config.rb`:
 ## License
 
 Copyright (c) 2013 Internet Initiative Japan Inc.
+Copyright (c) 2017 mruby developers
 
 Permission is hereby granted, free of charge, to any person obtaining a 
 copy of this software and associated documentation files (the "Software"), 
diff --git a/mrbgems/mruby-io/mrbgem.rake b/mrbgems/mruby-io/mrbgem.rake
index e4f0b7bb6..bd20f6d20 100644
--- a/mrbgems/mruby-io/mrbgem.rake
+++ b/mrbgems/mruby-io/mrbgem.rake
@@ -1,6 +1,6 @@
 MRuby::Gem::Specification.new('mruby-io') do |spec|
   spec.license = 'MIT'
-  spec.authors = 'Internet Initiative Japan Inc.'
+  spec.authors = ['Internet Initiative Japan Inc.', 'mruby developers']
   spec.summary = 'IO and File class'
 
   spec.cc.include_paths << "#{build.root}/src"
diff --git a/mrbgems/mruby-pack/README.md b/mrbgems/mruby-pack/README.md
index 95733e2d5..c8a653fba 100644
--- a/mrbgems/mruby-pack/README.md
+++ b/mrbgems/mruby-pack/README.md
@@ -49,6 +49,7 @@ There is no dependency on other mrbgems.
 ## License
 
 Copyright (c) 2012 Internet Initiative Japan Inc.
+Copyright (c) 2017 mruby developers
 
 Permission is hereby granted, free of charge, to any person obtaining a 
 copy of this software and associated documentation files (the "Software"), 
diff --git a/mrbgems/mruby-pack/mrbgem.rake b/mrbgems/mruby-pack/mrbgem.rake
index 6e8375d1e..f1c0306b1 100644
--- a/mrbgems/mruby-pack/mrbgem.rake
+++ b/mrbgems/mruby-pack/mrbgem.rake
@@ -1,6 +1,6 @@
 MRuby::Gem::Specification.new('mruby-pack') do |spec|
   spec.license = 'MIT'
-  spec.authors = 'Internet Initiative Japan Inc.'
+  spec.authors = ['Internet Initiative Japan Inc.', 'mruby developers']
   spec.summary = 'Array#pack and String#unpack method'
 
   spec.cc.include_paths << "#{build.root}/src"
diff --git a/mrbgems/mruby-sleep/mrbgem.rake b/mrbgems/mruby-sleep/mrbgem.rake
index 8827b3580..7a303b81c 100644
--- a/mrbgems/mruby-sleep/mrbgem.rake
+++ b/mrbgems/mruby-sleep/mrbgem.rake
@@ -1,5 +1,5 @@
 MRuby::Gem::Specification.new('mruby-sleep') do |spec|
   spec.license = 'MIT'
-  spec.authors = 'MATSUMOTO Ryosuke'
+  spec.authors = ['MATSUMOTO Ryosuke', 'mruby developers']
   spec.version = '0.0.1'
 end
diff --git a/mrbgems/mruby-sleep/src/mrb_sleep.c b/mrbgems/mruby-sleep/src/mrb_sleep.c
index 3f8ef90cf..ac9b07e85 100644
--- a/mrbgems/mruby-sleep/src/mrb_sleep.c
+++ b/mrbgems/mruby-sleep/src/mrb_sleep.c
@@ -2,6 +2,7 @@
 ** mrb_sleep - sleep methods for mruby
 **
 ** Copyright (c) mod_mruby developers 2012-
+** Copyright (c) mruby developers 2018
 **
 ** Permission is hereby granted, free of charge, to any person obtaining
 ** a copy of this software and associated documentation files (the
diff --git a/mrbgems/mruby-socket/README.md b/mrbgems/mruby-socket/README.md
index ceb50c651..947a24e9e 100644
--- a/mrbgems/mruby-socket/README.md
+++ b/mrbgems/mruby-socket/README.md
@@ -35,6 +35,7 @@ Date: Tue, 21 May 2013 04:31:30 GMT
 ## License
 
 Copyright (c) 2013 Internet Initiative Japan Inc.
+Copyright (c) 2017 mruby developers
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
diff --git a/mrbgems/mruby-socket/mrbgem.rake b/mrbgems/mruby-socket/mrbgem.rake
index b0894e095..24d6f953d 100644
--- a/mrbgems/mruby-socket/mrbgem.rake
+++ b/mrbgems/mruby-socket/mrbgem.rake
@@ -1,6 +1,6 @@
 MRuby::Gem::Specification.new('mruby-socket') do |spec|
   spec.license = 'MIT'
-  spec.authors = 'Internet Initiative Japan'
+  spec.authors = ['Internet Initiative Japan', 'mruby developers']
   spec.summary = 'standard socket class'
 
   spec.cc.include_paths << "#{build.root}/src"