Bump rubocop from 0.52.1 to 0.53.0 (#438)

Bumps [rubocop](https://github.com/bbatsov/rubocop) from 0.52.1 to 0.53.0.
- [Release notes](https://github.com/bbatsov/rubocop/releases/tag/v0.53.0)
- [Changelog](https://github.com/bbatsov/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.52.1...v0.53.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

And fixes new offenses.

Gemfile

@@ -10,6 +10,6 @@ gem "minitest", "~> 5.11"
 gem "pry", "0.11.3"
 gem "rake", "~> 12.3"
 gem "rake-compiler", "~> 1.0"
-gem "rubocop", "0.52.1"
+gem "rubocop", "0.53.0"
 gem "simplecov", "0.15.1"
 gem "yard", "0.9.12"

Gemfile.lock

@@ -8,7 +8,7 @@ GEM
   specs:
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
-    ast (2.3.0)
+    ast (2.4.0)
     chandler (0.7.0)
       netrc
       octokit (>= 2.2.0)
@@ -31,8 +31,8 @@ GEM
     octokit (4.8.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     parallel (1.12.1)
-    parser (2.4.0.2)
-      ast (~> 2.3)
+    parser (2.5.0.2)
+      ast (~> 2.4.0)
     powerpack (0.1.1)
     pry (0.11.3)
       coderay (~> 1.1.0)
@@ -42,9 +42,9 @@ GEM
     rake (12.3.0)
     rake-compiler (1.0.4)
       rake
-    rubocop (0.52.1)
+    rubocop (0.53.0)
       parallel (~> 1.10)
-      parser (>= 2.4.0.2, < 3.0)
+      parser (>= 2.5)
       powerpack (~> 0.1)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
@@ -73,7 +73,7 @@ DEPENDENCIES
   pry (= 0.11.3)
   rake (~> 12.3)
   rake-compiler (~> 1.0)
-  rubocop (= 0.52.1)
+  rubocop (= 0.53.0)
   simplecov (= 0.15.1)
   yard (= 0.9.12)
 

lib/byebug/helpers/bin.rb

@@ -39,8 +39,8 @@ def executable_file_extensions
         ENV["PATHEXT"] ? ENV["PATHEXT"].split(";") : [""]
       end
 
-      def real_executable?(f)
-        File.executable?(f) && !File.directory?(f)
+      def real_executable?(file)
+        File.executable?(file) && !File.directory?(file)
       end
     end
   end

lib/byebug/helpers/eval.rb

@@ -63,22 +63,22 @@ def safe_eval(str, binding)
         yield(e)
       end
 
-      def msg(e)
-        msg = Setting[:stack_on_error] ? error_msg(e) : warning_msg(e)
+      def msg(exception)
+        msg = Setting[:stack_on_error] ? error_msg(exception) : warning_msg(exception)
 
         pr("eval.exception", text_message: msg)
       end
 
-      def error_msg(e)
-        at = e.backtrace
+      def error_msg(exception)
+        at = exception.backtrace
 
-        locations = ["#{at.shift}: #{warning_msg(e)}"]
+        locations = ["#{at.shift}: #{warning_msg(exception)}"]
         locations += at.map { |path| "  from #{path}" }
         locations.join("\n")
       end
 
-      def warning_msg(e)
-        "#{e.class} Exception: #{e.message}"
+      def warning_msg(exception)
+        "#{exception.class} Exception: #{exception.message}"
       end
 
       #

lib/byebug/helpers/frame.rb

@@ -67,8 +67,8 @@ def direction(step)
       #
       # @param i [Integer] Integer to be converted in a proper positive index.
       #
-      def index_from_start(i)
-        i >= 0 ? i : context.stack_size + i
+      def index_from_start(index)
+        index >= 0 ? index : context.stack_size + index
       end
     end
   end

lib/byebug/history.rb

@@ -45,7 +45,7 @@ def restore
     def save
       n_cmds = Setting[:histsize] > size ? size : Setting[:histsize]
 
-      open(Setting[:histfile], "w") do |file|
+      File.open(Setting[:histfile], "w") do |file|
         n_cmds.times { file.puts(pop) }
       end
 
@@ -91,10 +91,10 @@ def to_s(n_cmds)
     end
 
     #
-    # Array of ids of the last n commands.
+    # Array of ids of the last +number+ commands.
     #
-    def last_ids(n)
-      (1 + size - n..size).to_a
+    def last_ids(number)
+      (1 + size - number..size).to_a
     end
 
     #

lib/byebug/printers/plain.rb

@@ -22,7 +22,7 @@ def print_collection(path, collection, &block)
         lines.join
       end
 
-      def print_variables(variables, *_)
+      def print_variables(variables, *_unused)
         print_collection("variable.variable", variables) do |(key, value), _|
           value = value.nil? ? "nil" : value.to_s
           if "#{key} = #{value}".size > Setting[:width]

lib/byebug/settings/autoirb.rb

@@ -18,8 +18,8 @@ def banner
       "Invoke IRB on every stop"
     end
 
-    def value=(v)
-      IrbCommand.always_run = v ? 1 : 0
+    def value=(val)
+      IrbCommand.always_run = val ? 1 : 0
     end
 
     def value

lib/byebug/settings/autolist.rb

@@ -18,8 +18,8 @@ def banner
       "Invoke list command on every stop"
     end
 
-    def value=(v)
-      ListCommand.always_run = v ? 1 : 0
+    def value=(val)
+      ListCommand.always_run = val ? 1 : 0
     end
 
     def value

lib/byebug/settings/autopry.rb

@@ -18,8 +18,8 @@ def banner
       "Invoke Pry on every stop"
     end
 
-    def value=(v)
-      PryCommand.always_run = v ? 1 : 0
+    def value=(val)
+      PryCommand.always_run = val ? 1 : 0
     end
 
     def value

lib/byebug/settings/linetrace.rb

@@ -11,8 +11,8 @@ def banner
       "Enable line execution tracing"
     end
 
-    def value=(v)
-      Byebug.tracing = v
+    def value=(val)
+      Byebug.tracing = val
     end
 
     def value

lib/byebug/settings/post_mortem.rb

@@ -16,8 +16,8 @@ def banner
       "Enable/disable post-mortem mode"
     end
 
-    def value=(v)
-      Byebug.post_mortem = v
+    def value=(val)
+      Byebug.post_mortem = val
     end
 
     def value