Replace comments' non-breaking spaces with spaces

Sometimes, on Mac OS X, programmers accidentally press Option+Space
rather than just Space and don’t see the difference. The problem is
that Option+Space writes a non-breaking space (0XA0) rather than a
normal space (0x20).

This commit removes all the non-breaking spaces inadvertently
introduced in the comments of the code.

3 files changed, 6 insertions, 6 deletions

diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index c82d4f012c..963e52bff3 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -122,7 +122,7 @@ module ActiveModel
     # Delete messages for +key+. Returns the deleted messages.
     #
     #   person.errors.get(:name)    # => ["can not be nil"]
-    #   person.errors.delete(:name) # => ["can not be nil"]
+    #   person.errors.delete(:name) # => ["can not be nil"]
     #   person.errors.get(:name)    # => nil
     def delete(key)
       messages.delete(key)
@@ -213,7 +213,7 @@ module ActiveModel
     # Returns +true+ if no errors are found, +false+ otherwise.
     # If the error message is a string it can be empty.
     #
-    #   person.errors.full_messages # => ["name can not be nil"]
+    #   person.errors.full_messages # => ["name can not be nil"]
     #   person.errors.empty?        # => false
     def empty?
       all? { |k, v| v && v.empty? && !v.is_a?(String) }
@@ -246,7 +246,7 @@ module ActiveModel
       to_hash(options && options[:full_messages])
     end
 
-    # Returns a Hash of attributes with their error messages. If +full_messages+
+    # Returns a Hash of attributes with their error messages. If +full_messages+
     # is +true+, it will contain full messages (see +full_message+).
     #
     #   person.to_hash       # => {:name=>["can not be nil"]}
diff --git a/activemodel/lib/active_model/serialization.rb b/activemodel/lib/active_model/serialization.rb
index dfd68a90fd..fdb06aebb9 100644
--- a/activemodel/lib/active_model/serialization.rb
+++ b/activemodel/lib/active_model/serialization.rb
@@ -90,7 +90,7 @@ module ActiveModel
     #   person.name = 'bob'
     #   person.age  = 22
     #   person.serializable_hash                # => {"name"=>"bob", "age"=>22}
-    #   person.serializable_hash(only: :name)   # => {"name"=>"bob"}
+    #   person.serializable_hash(only: :name)   # => {"name"=>"bob"}
     #   person.serializable_hash(except: :name) # => {"age"=>22}
     #   person.serializable_hash(methods: :capitalized_name)
     #   # => {"name"=>"bob", "age"=>22, "capitalized_name"=>"Bob"}
diff --git a/activemodel/lib/active_model/validator.rb b/activemodel/lib/active_model/validator.rb
index 629b157fed..ff3dfa01c8 100644
--- a/activemodel/lib/active_model/validator.rb
+++ b/activemodel/lib/active_model/validator.rb
@@ -109,8 +109,8 @@ module ActiveModel
 
     # Return the kind for this validator.
     #
-    #   PresenceValidator.new.kind   # => :presence
-    #   UniquenessValidator.new.kind # => :uniqueness 
+    #   PresenceValidator.new.kind   # => :presence
+    #   UniquenessValidator.new.kind # => :uniqueness 
     def kind
       self.class.kind
     end