* lib/cgi/core.rb: remove unused variables.

* lib/erb.rb: ditto.
* lib/mkmf.rb: ditto.
* lib/net/http/response.rb: ditto.
* lib/optparse/version.rb: ditto.
* lib/prime.rb: ditto.
* lib/racc/parser.rb: ditto.
* lib/rexml/document.rb: ditto.
* lib/rexml/dtd/dtd.rb: ditto.
* lib/rexml/element.rb: ditto.
* lib/rexml/functions.rb: ditto.
* lib/rexml/parsers/xpathparser.rb: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

5 files changed, 4 insertions, 11 deletions

diff --git a/lib/rexml/document.rb b/lib/rexml/document.rb
index 1e18263dda..8342b96e6a 100644
--- a/lib/rexml/document.rb
+++ b/lib/rexml/document.rb
@@ -123,7 +123,7 @@ module REXML
     def xml_decl
       rv = @children[0]
       return rv if rv.kind_of? XMLDecl
-      rv = @children.unshift(XMLDecl.default)[0]
+      @children.unshift(XMLDecl.default)[0]
     end
 
     # @return the XMLDecl version of this document as a String.
diff --git a/lib/rexml/dtd/dtd.rb b/lib/rexml/dtd/dtd.rb
index 966e39ea57..62317bac9e 100644
--- a/lib/rexml/dtd/dtd.rb
+++ b/lib/rexml/dtd/dtd.rb
@@ -24,23 +24,18 @@ module REXML
           case input
           when ElementDecl.PATTERN_RE
             match = $&
-            source = $'
             contents << ElementDecl.new( match )
           when AttlistDecl.PATTERN_RE
             matchdata = $~
-            source = $'
             contents << AttlistDecl.new( matchdata )
           when EntityDecl.PATTERN_RE
             matchdata = $~
-            source = $'
             contents << EntityDecl.new( matchdata )
           when Comment.PATTERN_RE
             matchdata = $~
-            source = $'
             contents << Comment.new( matchdata )
           when NotationDecl.PATTERN_RE
             matchdata = $~
-            source = $'
             contents << NotationDecl.new( matchdata )
           end
         end
diff --git a/lib/rexml/element.rb b/lib/rexml/element.rb
index 94b00d7284..e459704d3c 100644
--- a/lib/rexml/element.rb
+++ b/lib/rexml/element.rb
@@ -1181,9 +1181,8 @@ module REXML
         prefix = '' unless prefix
       end
       old = fetch(name, nil)
-      attr = nil
       if old.kind_of? Hash # the supplied attribute is one of many
-        attr = old.delete(prefix)
+        old.delete(prefix)
         if old.size == 1
           repl = nil
           old.each_value{|v| repl = v}
@@ -1192,7 +1191,6 @@ module REXML
       elsif old.nil?
         return @element
       else # the supplied attribute is a top-level one
-        attr = old
         super(name)
       end
       @element
diff --git a/lib/rexml/functions.rb b/lib/rexml/functions.rb
index 20c8961aee..2010be14e0 100644
--- a/lib/rexml/functions.rb
+++ b/lib/rexml/functions.rb
@@ -363,7 +363,7 @@ module REXML
 
     def Functions::sum( nodes )
       nodes = [nodes] unless nodes.kind_of? Array
-      nodes.inject(0) { |r,n| r += number(string(n)) }
+      nodes.inject(0) { |r,n| r + number(string(n)) }
     end
 
     def Functions::floor( number )
diff --git a/lib/rexml/parsers/xpathparser.rb b/lib/rexml/parsers/xpathparser.rb
index e643d11511..d30aa34f6e 100644
--- a/lib/rexml/parsers/xpathparser.rb
+++ b/lib/rexml/parsers/xpathparser.rb
@@ -21,7 +21,7 @@ module REXML
         path.gsub!(/([\(\[])\s+/, '\1') # Strip ignorable spaces
         path.gsub!( /\s+([\]\)])/, '\1')
         parsed = []
-        path = OrExpr(path, parsed)
+        OrExpr(path, parsed)
         parsed
       end