Reduce method calls by passing #find_name a Regexp.

lib/pry/default_commands/gems.rb

@@ -26,10 +26,9 @@ class Pry
 
       command "gem-list", "List/search installed gems. (Optional parameter: a regexp to limit the search)" do |pattern|
         pattern = Regexp.new pattern.to_s, Regexp::IGNORECASE
-        gems = Gem.source_index.gems.values.group_by(&:name)
+        gems = Gem.source_index.find_name(pattern).group_by(&:name)
 
         gems.each do |gem, specs|
-          if gem =~ pattern
           specs.sort! do |a,b| 
             Gem::Version.new(b.version) <=> Gem::Version.new(a.version) 
           end
@@ -41,7 +40,6 @@ class Pry
           output.puts "#{text.white gem} (#{versions.join ', '})"
         end
       end
-      end
 
       command "req", "Requires gem(s). No need for quotes! (If the gem isn't installed, it will ask if you want to install it.)" do |*gems|
         gems = gems.join(' ').gsub(',', '').split(/\s+/)