Fix stripping features from the description

Author: nobu

spec/ruby/command_line/dash_v_spec.rb

@@ -6,7 +6,7 @@
 
   describe "when used alone" do
     it "prints version and ends" do
-      ruby_exe(nil, args: '-v').sub("+PRISM ", "").should include(RUBY_DESCRIPTION.sub("+PRISM ", ""))
+      ruby_exe(nil, args: '-v').gsub("+PRISM ", "").should include(RUBY_DESCRIPTION.gsub("+PRISM ", ""))
     end unless (defined?(RubyVM::YJIT) && RubyVM::YJIT.enabled?) ||
                (defined?(RubyVM::RJIT) && RubyVM::RJIT.enabled?) ||
                (ENV['RUBY_GC_LIBRARY'] && ENV['RUBY_GC_LIBRARY'].length > 0) ||

spec/ruby/command_line/rubyopt_spec.rb

@@ -25,12 +25,12 @@
   guard -> { RbConfig::CONFIG["CROSS_COMPILING"] != "yes" } do
     it "prints the version number for '-v'" do
       ENV["RUBYOPT"] = '-v'
-      ruby_exe("").sub("+PRISM ", "").sub(/\+GC(\[\w+\]\s|\s)?/, "")[/\A.*/].should == RUBY_DESCRIPTION.sub("+PRISM ", "").sub(/\+GC(\[\w+\]\s|\s)?/, "")
+      ruby_exe("")[/\A.*/].gsub(/\s\+(PRISM|GC(\[\w+\])?)(?=\s)/, "").should == RUBY_DESCRIPTION.gsub(/\s\+(PRISM|GC(\[\w+\])?)(?=\s)/, "")
     end
 
     it "ignores whitespace around the option" do
       ENV["RUBYOPT"] = ' -v '
-      ruby_exe("").sub("+PRISM ", "").sub(/\+GC(\[\w+\]\s|\s)?/, "")[/\A.*/].should == RUBY_DESCRIPTION.sub("+PRISM ", "").sub(/\+GC(\[\w+\]\s|\s)?/, "")
+      ruby_exe("")[/\A.*/].gsub(/\s\+(PRISM|GC(\[\w+\])?)(?=\s)/, "").should == RUBY_DESCRIPTION.gsub(/\s\+(PRISM|GC(\[\w+\])?)(?=\s)/, "")
     end
   end