Merge pull request #5498 from dearblue/ruby-warns

Avoid warnings with `ruby -cw`

5 files changed, 3 insertions, 9 deletions

diff --git a/mrbgems/mruby-array-ext/mrblib/array.rb b/mrbgems/mruby-array-ext/mrblib/array.rb
index 7fbb948d2..7520b932f 100644
--- a/mrbgems/mruby-array-ext/mrblib/array.rb
+++ b/mrbgems/mruby-array-ext/mrblib/array.rb
@@ -386,7 +386,6 @@ class Array
     end
 
     beg = len = 0
-    ary = []
     if block
       if arg0.nil? && arg1.nil? && arg2.nil?
         # ary.fill { |index| block }                    -> ary
@@ -660,7 +659,6 @@ class Array
     return to_enum :keep_if unless block
 
     idx = 0
-    len = self.size
     while idx < self.size do
       if block.call(self[idx])
         idx += 1
diff --git a/mrbgems/mruby-hash-ext/mrblib/hash.rb b/mrbgems/mruby-hash-ext/mrblib/hash.rb
index 33e2dcb9f..5775913c3 100644
--- a/mrbgems/mruby-hash-ext/mrblib/hash.rb
+++ b/mrbgems/mruby-hash-ext/mrblib/hash.rb
@@ -116,7 +116,6 @@ class Hash
     nk.each {|k|
       h[k] = self[k]
     }
-    h
     self.replace(h)
   end
 
@@ -256,7 +255,6 @@ class Hash
   def keep_if(&block)
     return to_enum :keep_if unless block
 
-    keys = []
     self.each do |k, v|
       unless block.call([k, v])
         self.delete(k)
diff --git a/mrbgems/mruby-io/mrblib/io.rb b/mrbgems/mruby-io/mrblib/io.rb
index 645733226..006578222 100644
--- a/mrbgems/mruby-io/mrblib/io.rb
+++ b/mrbgems/mruby-io/mrblib/io.rb
@@ -209,7 +209,7 @@ class IO
     end
 
     array = []
-    while 1
+    while true
       begin
         _read_buf
       rescue EOFError
@@ -256,7 +256,7 @@ class IO
     end
 
     array = []
-    while 1
+    while true
       begin
         _read_buf
       rescue EOFError
diff --git a/mrbgems/mruby-string-ext/mrblib/string.rb b/mrbgems/mruby-string-ext/mrblib/string.rb
index 84d566fda..4f533c4cd 100644
--- a/mrbgems/mruby-string-ext/mrblib/string.rb
+++ b/mrbgems/mruby-string-ext/mrblib/string.rb
@@ -344,8 +344,6 @@ class String
   end
 
   def codepoints(&block)
-    len = self.size
-
     if block_given?
       self.split('').each do|x|
         block.call(x.ord)
diff --git a/mrbgems/mruby-toplevel-ext/mrblib/toplevel.rb b/mrbgems/mruby-toplevel-ext/mrblib/toplevel.rb
index 774562398..664008d1c 100644
--- a/mrbgems/mruby-toplevel-ext/mrblib/toplevel.rb
+++ b/mrbgems/mruby-toplevel-ext/mrblib/toplevel.rb
@@ -1,5 +1,5 @@
 
-def self.include (*modules)
+def self.include(*modules)
   self.class.include(*modules)
 end