Correct descriptions of {proper_,}{superset,subset}?.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 5 deletions

diff --git a/lib/set.rb b/lib/set.rb
index c2792dedb1..40715edb36 100644
--- a/lib/set.rb
+++ b/lib/set.rb
@@ -146,23 +146,21 @@ class Set
   end
   alias member? include?
 
-  # Returns true if the set is a superset of or is equal to the given
-  # set.
+  # Returns true if the set is a superset of the given set.
   def superset?(set)
     set.is_a?(Set) or raise ArgumentError, "value must be a set"
     return false if size < set.size
     set.all? { |o| include?(o) }
   end
 
-  # Returns true if the set is a superset of or is equal to the given
-  # set.
+  # Returns true if the set is a proper superset of the given set.
   def proper_superset?(set)
     set.is_a?(Set) or raise ArgumentError, "value must be a set"
     return false if size <= set.size
     set.all? { |o| include?(o) }
   end
 
-  # Returns true if the set is a proper subset of the given set.
+  # Returns true if the set is a subset of the given set.
   def subset?(set)
     set.is_a?(Set) or raise ArgumentError, "value must be a set"
     return false if set.size < size