Fix warning

Author: robotdana

CHANGELOG.md

@@ -1,3 +1,6 @@
+# v2.0.1
+- Fix regexp warning
+
 # v2.0.0
 - TTYString is now a module not a class.
 - Address the issue where preserved styles and unknown codes would cause the cursor to be misaligned when moving, and potentially overwriting styles unexpectedly:

lib/tty_string/csi_code.rb

@@ -27,11 +27,14 @@ def re
         @re ||= /\e\[#{args_re}#{char}/
       end
 
-      def args_re
+      def args_re # rubocop:disable Metrics/MethodLength
         case max_args
-        when 0, 1 then /(?:[0-:<-?]*){0,#{max_args}}/
+          # :nocov:
+        when 0 then nil
+          # :nocov:
+        when 1 then /[0-:<-?]*/
         when -1 then %r{[0-?]*[ -/]*}
-        else /(?:(?:[0-:<-?]*)?(?:;(?:[0-:<-?]*)?){0,#{max_args - 1}})?/
+        else /(?:(?:[0-:<-?]*)(?:;(?:[0-:<-?]*)){0,#{max_args - 1}})?/
         end
       end
 

lib/tty_string/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module TTYString
-  VERSION = '2.0.0'
+  VERSION = '2.0.1'
 end

spec/spec_helper.rb

@@ -31,4 +31,5 @@
   config.expect_with :rspec do |c|
     c.syntax = :expect
   end
+  config.warnings = true
 end