Eliminating Ruby Warnings (#112)

* ⚠️ `*' interpreted as argument prefix

* ⚠️ ambiguous first argument; put parentheses or a space even after `-' operator

Author: amatsuda

lib/kredis/migration.rb

@@ -33,10 +33,10 @@ def migrate(from:, to:, pipeline: nil)
   def delete_all(*key_patterns)
     log_migration "DELETE ALL #{key_patterns.inspect}" do
       if key_patterns.length > 1
-        @redis.del *key_patterns
+        @redis.del(*key_patterns)
       else
         each_key_batch_matching(key_patterns.first) do |keys, pipeline|
-          pipeline.del *keys
+          pipeline.del(*keys)
         end
       end
     end

lib/kredis/types/proxying.rb

@@ -4,7 +4,7 @@ class Kredis::Types::Proxying
   attr_accessor :proxy, :key
 
   def self.proxying(*commands)
-    delegate *commands, to: :proxy
+    delegate(*commands, to: :proxy)
   end
 
   def initialize(redis, key, **options)

lib/kredis/types/unique_list.rb

@@ -22,7 +22,7 @@ def append(elements)
     multi do
       remove elements
       super
-      ltrim -limit, -1 if limit
+      ltrim(-limit, -1) if limit
     end
   end
   alias << append

test/migration_test.rb

@@ -62,7 +62,7 @@ class MigrationTest < ActiveSupport::TestCase
   test "delete_all with keys" do
     3.times { |index| Kredis.proxy("mykey:#{index}").set "hello there #{index}" }
 
-    Kredis::Migration.delete_all *3.times.map { |index| "mykey:#{index}" }
+    Kredis::Migration.delete_all(*3.times.map { |index| "mykey:#{index}" })
 
     3.times { |index| assert_nil Kredis.proxy("mykey:#{index}").get }
   end