[ruby/logger] frozen_string_literal: true

https://github.com/ruby/logger/commit/a057eede7b

6 files changed, 15 insertions, 6 deletions

diff --git a/lib/logger.rb b/lib/logger.rb
index aff2ad4a81..46cc6cf776 100644
--- a/lib/logger.rb
+++ b/lib/logger.rb
@@ -237,7 +237,7 @@ class Logger
     name = File.basename(__FILE__)
   end
   rev ||= "v#{VERSION}"
-  ProgName = "#{name}/#{rev}".freeze
+  ProgName = "#{name}/#{rev}"
 
   include Severity
 
@@ -574,7 +574,7 @@ class Logger
 private
 
   # Severity label for logging (max 5 chars).
-  SEV_LABEL = %w(DEBUG INFO WARN ERROR FATAL ANY).each(&:freeze).freeze
+  SEV_LABEL = %w(DEBUG INFO WARN ERROR FATAL ANY).freeze
 
   def format_severity(severity)
     SEV_LABEL[severity] || 'ANY'
diff --git a/lib/logger/errors.rb b/lib/logger/errors.rb
index 8095acc9c8..e8925e14ac 100644
--- a/lib/logger/errors.rb
+++ b/lib/logger/errors.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # not used after 1.2.7. just for compat.
 class Logger
   class Error < RuntimeError # :nodoc:
diff --git a/lib/logger/formatter.rb b/lib/logger/formatter.rb
index 13cb1a8390..206c35d9fa 100644
--- a/lib/logger/formatter.rb
+++ b/lib/logger/formatter.rb
@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 class Logger
   # Default formatter for log messages.
   class Formatter
-    Format = "%s, [%s#%d] %5s -- %s: %s\n".freeze
+    Format = "%s, [%s#%d] %5s -- %s: %s\n"
 
     attr_accessor :datetime_format
 
@@ -17,7 +19,7 @@ class Logger
   private
 
     def format_datetime(time)
-      time.strftime(@datetime_format || "%Y-%m-%dT%H:%M:%S.%6N ".freeze)
+      time.strftime(@datetime_format || "%Y-%m-%dT%H:%M:%S.%6N ")
     end
 
     def msg2str(msg)
@@ -25,8 +27,7 @@ class Logger
       when ::String
         msg
       when ::Exception
-        "#{ msg.message } (#{ msg.class })\n" <<
-          (msg.backtrace || []).join("\n")
+        "#{ msg.message } (#{ msg.class })\n#{ (msg.backtrace || []).join("\n") }"
       else
         msg.inspect
       end
diff --git a/lib/logger/log_device.rb b/lib/logger/log_device.rb
index 5661f5ce14..fe7d54fb81 100644
--- a/lib/logger/log_device.rb
+++ b/lib/logger/log_device.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative 'period'
 
 class Logger
diff --git a/lib/logger/period.rb b/lib/logger/period.rb
index bb8cffc2f8..76a8c3b011 100644
--- a/lib/logger/period.rb
+++ b/lib/logger/period.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Logger
   module Period
     module_function
diff --git a/lib/logger/severity.rb b/lib/logger/severity.rb
index c8179cb017..b38afb7d22 100644
--- a/lib/logger/severity.rb
+++ b/lib/logger/severity.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Logger
   # Logging severity.
   module Severity