olbrich · olbrich · Dec 29, 2025 · Dec 28, 2025 · Dec 28, 2025 · Dec 28, 2025
diff --git a/.rubocop.yml b/.rubocop.yml
@@ -30,3 +30,5 @@ Metrics/PerceivedComplexity:
   Enabled: false
 Metrics/AbcSize:
   Enabled: false
+Layout/ExtraSpacing:
+  AllowForAlignment: false
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
@@ -1,20 +1,20 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2024-09-01 18:40:26 UTC using RuboCop version 1.66.0.
+# on 2025-12-28 23:46:28 UTC using RuboCop version 1.82.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
-# Offense count: 2
+# Offense count: 1
 Lint/BinaryOperatorWithIdenticalOperands:
   Exclude:
     - 'spec/ruby_units/unit_spec.rb'
 
 # Offense count: 2
 # Configuration parameters: EnforcedStyle, CheckMethodNames, CheckSymbols, AllowedIdentifiers, AllowedPatterns.
 # SupportedStyles: snake_case, normalcase, non_integer
-# AllowedIdentifiers: capture3, iso8601, rfc1123_date, rfc822, rfc2822, rfc3339, x86_64
+# AllowedIdentifiers: TLS1_1, TLS1_2, capture3, iso8601, rfc1123_date, rfc822, rfc2822, rfc3339, x86_64
 Naming/VariableNumber:
   Exclude:
     - 'spec/ruby_units/unit_spec.rb'
@@ -33,7 +33,7 @@ RSpec/BeforeAfterAll:
     - '**/spec/support/**/*.rb'
     - 'spec/ruby_units/temperature_spec.rb'
 
-# Offense count: 95
+# Offense count: 79
 # Configuration parameters: Prefixes, AllowedPatterns.
 # Prefixes: when, with, without
 RSpec/ContextWording:
@@ -42,7 +42,7 @@ RSpec/ContextWording:
     - 'spec/ruby_units/unit_spec.rb'
     - 'spec/ruby_units/utf-8/unit_spec.rb'
 
-# Offense count: 12
+# Offense count: 13
 # Configuration parameters: IgnoredMetadata.
 RSpec/DescribeClass:
   Exclude:
@@ -53,6 +53,7 @@ RSpec/DescribeClass:
     - '**/spec/views/**/*'
     - 'spec/ruby_units/bugs_spec.rb'
     - 'spec/ruby_units/definition_spec.rb'
+    - 'spec/ruby_units/initialization_spec.rb'
     - 'spec/ruby_units/temperature_spec.rb'
     - 'spec/ruby_units/unit_spec.rb'
 
@@ -92,11 +93,11 @@ RSpec/MultipleDescribes:
   Exclude:
     - 'spec/ruby_units/unit_spec.rb'
 
-# Offense count: 10
+# Offense count: 30
 RSpec/MultipleExpectations:
   Max: 6
 
-# Offense count: 59
+# Offense count: 60
 # Configuration parameters: EnforcedStyle, IgnoreSharedExamples.
 # SupportedStyles: always, named_only
 RSpec/NamedSubject:
@@ -134,29 +135,23 @@ RSpec/RepeatedExampleGroupDescription:
     - 'spec/ruby_units/unit_spec.rb'
 
 # Offense count: 1
-# Configuration parameters: Include, CustomTransform, IgnoreMethods, IgnoreMetadata.
-# Include: **/*_spec.rb
+# Configuration parameters: CustomTransform, IgnoreMethods, IgnoreMetadata, InflectorPath, EnforcedInflector.
+# SupportedInflectors: default, active_support
 RSpec/SpecFilePathFormat:
   Exclude:
     - '**/spec/routing/**/*'
     - 'spec/ruby_units/utf-8/unit_spec.rb'
 
 # Offense count: 1
 # This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: EnforcedStyle.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForClasses, EnforcedStyleForModules.
 # SupportedStyles: nested, compact
+# SupportedStylesForClasses: ~, nested, compact
+# SupportedStylesForModules: ~, nested, compact
 Style/ClassAndModuleChildren:
   Exclude:
     - 'lib/ruby_units/definition.rb'
 
-# Offense count: 1
-# Configuration parameters: AllowedConstants.
-Style/Documentation:
-  Exclude:
-    - 'spec/**/*'
-    - 'test/**/*'
-    - 'lib/ruby_units/configuration.rb'
-
 # Offense count: 5
 # This cop supports unsafe autocorrection (--autocorrect-all).
 Style/GlobalStdStream:
@@ -169,13 +164,6 @@ Style/OpenStructUse:
   Exclude:
     - 'Guardfile'
 
-# Offense count: 1
-# Configuration parameters: AllowedMethods.
-# AllowedMethods: respond_to_missing?
-Style/OptionalBooleanParameter:
-  Exclude:
-    - 'lib/ruby_units/date.rb'
-
 # Offense count: 1
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: AllowSend.

diff --git a/Gemfile.lock b/Gemfile.lock
@@ -179,9 +179,9 @@ GEM
       rubocop-ast (>= 1.48.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 4.0)
-    rubocop-ast (1.48.0)
+    rubocop-ast (1.49.0)
       parser (>= 3.3.7.2)
-      prism (~> 1.4)
+      prism (~> 1.7)
     rubocop-rake (0.7.1)
       lint_roller (~> 1.1)
       rubocop (>= 1.72.1)

diff --git a/Guardfile b/Guardfile
@@ -28,6 +28,6 @@ guard :rspec, cmd: "bundle exec rspec" do
   rspec.spec_helper = "spec/spec_helper.rb"
 
   watch(%r{^spec/.+_spec\.rb$})
-  watch(%r{^lib/(.+)\.rb$})     { |m| rspec.spec.call(m[1]) }
-  watch(rspec.spec_helper)      { rspec.spec_dir }
+  watch(%r{^lib/(.+)\.rb$}) { |m| rspec.spec.call(m[1]) }
+  watch(rspec.spec_helper) { rspec.spec_dir }
 end
diff --git a/lib/ruby_units/unit.rb b/lib/ruby_units/unit.rb
@@ -55,8 +55,8 @@
     self.unit_values = {}
     @unit_regex = nil
     @unit_match_regex = nil
-    UNITY              = "<1>"
-    UNITY_ARRAY        = [UNITY].freeze
+    UNITY = "<1>"
+    UNITY_ARRAY = [UNITY].freeze
 
     SIGN_REGEX = /(?:[+-])?/ # +, -, or nothing
 
@@ -75,36 +75,36 @@
     # and 'inches', but they aren't defined at the point in the code where we
     # need this regex.
     FEET_INCH_UNITS_REGEX = /(?:'|ft|feet)\s*(?<inches>#{RATIONAL_NUMBER}|#{SCI_NUMBER})\s*(?:"|in|inch(?:es)?)/
-    FEET_INCH_REGEX    = /(?<feet>#{INTEGER_REGEX})\s*#{FEET_INCH_UNITS_REGEX}/
+    FEET_INCH_REGEX = /(?<feet>#{INTEGER_REGEX})\s*#{FEET_INCH_UNITS_REGEX}/
     # ideally we would like to generate this regex from the alias for a 'pound'
     # and 'ounce', but they aren't defined at the point in the code where we
     # need this regex.
-    LBS_OZ_UNIT_REGEX  = /(?:#|lbs?|pounds?|pound-mass)+[\s,]*(?<oz>#{RATIONAL_NUMBER}|#{UNSIGNED_INTEGER_REGEX})\s*(?:ozs?|ounces?)/
-    LBS_OZ_REGEX       = /(?<pounds>#{INTEGER_REGEX})\s*#{LBS_OZ_UNIT_REGEX}/
+    LBS_OZ_UNIT_REGEX = /(?:#|lbs?|pounds?|pound-mass)+[\s,]*(?<oz>#{RATIONAL_NUMBER}|#{UNSIGNED_INTEGER_REGEX})\s*(?:ozs?|ounces?)/
+    LBS_OZ_REGEX = /(?<pounds>#{INTEGER_REGEX})\s*#{LBS_OZ_UNIT_REGEX}/
     # ideally we would like to generate this regex from the alias for a 'stone'
     # and 'pound', but they aren't defined at the point in the code where we
     # need this regex. also note that the plural of 'stone' is still 'stone',
     # but we accept 'stones' anyway.
     STONE_LB_UNIT_REGEX = /(?:sts?|stones?)+[\s,]*(?<pounds>#{RATIONAL_NUMBER}|#{UNSIGNED_INTEGER_REGEX})\s*(?:#|lbs?|pounds?|pound-mass)*/
-    STONE_LB_REGEX     = /(?<stone>#{INTEGER_REGEX})\s*#{STONE_LB_UNIT_REGEX}/
+    STONE_LB_REGEX = /(?<stone>#{INTEGER_REGEX})\s*#{STONE_LB_UNIT_REGEX}/
     # Time formats: 12:34:56,78, (hh:mm:ss,msec) etc.
-    TIME_REGEX         = /(?<hour>\d+):(?<min>\d+):?(?:(?<sec>\d+))?(?:[.](?<msec>\d+))?/
+    TIME_REGEX = /(?<hour>\d+):(?<min>\d+):?(?:(?<sec>\d+))?(?:[.](?<msec>\d+))?/
     # Complex numbers: 1+2i, 1.0+2.0i, -1-1i, etc.
-    COMPLEX_NUMBER     = /(?<real>#{SCI_NUMBER})?(?<imaginary>#{SCI_NUMBER})i\b/
+    COMPLEX_NUMBER = /(?<real>#{SCI_NUMBER})?(?<imaginary>#{SCI_NUMBER})i\b/
     # Any Complex, Rational, or scientific number
-    ANY_NUMBER         = /(#{COMPLEX_NUMBER}|#{RATIONAL_NUMBER}|#{SCI_NUMBER})/
-    ANY_NUMBER_REGEX   = /(?:#{ANY_NUMBER})?\s?([^-\d.].*)?/
-    NUMBER_REGEX       = /(?<scalar>#{SCI_NUMBER}*)\s*(?<unit>.+)?/ # a number followed by a unit
-    UNIT_STRING_REGEX  = %r{#{SCI_NUMBER}*\s*([^/]*)/*(.+)*}
-    TOP_REGEX          = /(?<unit_part>[^ *]+)(?:\^|\*\*)(?<exponent>[\d-]+)/
-    BOTTOM_REGEX       = /(?<unit_part>[^* ]+)(?:\^|\*\*)(?<exponent>\d+)/
-    NUMBER_UNIT_REGEX  = /#{SCI_NUMBER}?(.*)/
-    COMPLEX_REGEX      = /#{COMPLEX_NUMBER}\s?(?<unit>.+)?/
-    RATIONAL_REGEX     = /#{RATIONAL_NUMBER}\s?(?<unit>.+)?/
-    KELVIN             = ["<kelvin>"].freeze
-    FAHRENHEIT         = ["<fahrenheit>"].freeze
-    RANKINE            = ["<rankine>"].freeze
-    CELSIUS            = ["<celsius>"].freeze
+    ANY_NUMBER = /(#{COMPLEX_NUMBER}|#{RATIONAL_NUMBER}|#{SCI_NUMBER})/
+    ANY_NUMBER_REGEX = /(?:#{ANY_NUMBER})?\s?([^-\d.].*)?/
+    NUMBER_REGEX = /(?<scalar>#{SCI_NUMBER}*)\s*(?<unit>.+)?/ # a number followed by a unit
+    UNIT_STRING_REGEX = %r{#{SCI_NUMBER}*\s*([^/]*)/*(.+)*}
+    TOP_REGEX = /(?<unit_part>[^ *]+)(?:\^|\*\*)(?<exponent>[\d-]+)/
+    BOTTOM_REGEX = /(?<unit_part>[^* ]+)(?:\^|\*\*)(?<exponent>\d+)/
+    NUMBER_UNIT_REGEX = /#{SCI_NUMBER}?(.*)/
+    COMPLEX_REGEX = /#{COMPLEX_NUMBER}\s?(?<unit>.+)?/
+    RATIONAL_REGEX = /#{RATIONAL_NUMBER}\s?(?<unit>.+)?/
+    KELVIN = ["<kelvin>"].freeze
+    FAHRENHEIT = ["<fahrenheit>"].freeze
+    RANKINE = ["<rankine>"].freeze
+    CELSIUS = ["<celsius>"].freeze
 
     # Temperature conversion constants
     CELSIUS_OFFSET_TO_KELVIN = 273.15 # offset to convert Celsius to Kelvin
@@ -379,24 +379,24 @@
    # @param [String] string
    # @return [Array(Numeric, String)] consisting of [number, "unit"]
    def self.parse_into_numbers_and_units(string)
      num, unit = string.scan(ANY_NUMBER_REGEX).first

      [
        case num
        when NilClass # This happens when no number is passed and we are parsing a pure unit string
          1
        when COMPLEX_NUMBER
          num.to_c
        when RATIONAL_NUMBER
          # We use this method instead of relying on `to_r` because it does not
          # handle improper fractions correctly.
          sign = Regexp.last_match(1) == "-" ? -1 : 1
          whole_part = Regexp.last_match(2).to_i
          fractional_part = Rational(Regexp.last_match(3).to_i, Regexp.last_match(4).to_i)
          sign * (whole_part + fractional_part)
        else
          num.to_f
        end,
        unit.to_s.strip
      ]
    end
@@ -1229,9 +1229,9 @@
 
         target_num = target.numerator
         target_den = target.denominator
-        source_numerator_values   = to_scalar.call(@numerator)
+        source_numerator_values = to_scalar.call(@numerator)
         source_denominator_values = to_scalar.call(@denominator)
-        target_numerator_values   = to_scalar.call(target_num)
+        target_numerator_values = to_scalar.call(target_num)
         target_denominator_values = to_scalar.call(target_den)
         # @type [Rational, Numeric]
         scalar_is_integer = @scalar.is_a?(Integer)
@@ -1295,10 +1295,10 @@
     def units(with_prefix: true, format: nil)
       return "" if @numerator == UNITY_ARRAY && @denominator == UNITY_ARRAY
 
-      output_numerator   = ["1"]
+      output_numerator = ["1"]
       output_denominator = []
-      num                = @numerator.clone.compact
-      den                = @denominator.clone.compact
+      num = @numerator.clone.compact
+      den = @denominator.clone.compact
 
       process_unit_array = lambda do |unit_array|
         definitions = unit_array.map { unit_class.definition(_1) }
@@ -1605,11 +1605,11 @@
     def update_base_scalar
       if base?
         @base_scalar = @scalar
-        @signature   = unit_signature
+        @signature = unit_signature
       else
-        base         = to_base
+        base = to_base
         @base_scalar = base.scalar
-        @signature   = base.signature
+        @signature = base.signature
       end
     end
 
@@ -2061,7 +2061,7 @@

      unit_string.gsub!(/[%'"#]/, "%" => "percent", "'" => "feet", '"' => "inch", "#" => "pound")
      if unit_string.start_with?(COMPLEX_NUMBER)
        match = unit_string.match(COMPLEX_REGEX)
        real_str, imaginary_str, unit_s = match.values_at(:real, :imaginary, :unit)
        real = Float(real_str) if real_str
        imaginary = Float(imaginary_str)
@@ -2076,7 +2076,7 @@
      end

      if unit_string.start_with?(RATIONAL_NUMBER)
        match = unit_string.match(RATIONAL_REGEX)
        numerator_string, denominator_string, proper_string, unit_s = match.values_at(:numerator, :denominator, :proper, :unit)
        numerator = Integer(numerator_string)
        denominator = Integer(denominator_string)
@@ -2103,7 +2103,7 @@
 
       if unit
         copy(unit)
-        @scalar      *= mult
+        @scalar *= mult
         @base_scalar *= mult
         return self
       end
@@ -2118,7 +2118,7 @@
      # ... and then strip the remaining brackets for x*y*z
      unit_string.gsub!(/[<>]/, "")

      if (match = unit_string.match(TIME_REGEX))
        hours, minutes, seconds, milliseconds = match.values_at(:hour, :min, :sec, :msec)
        raise ArgumentError, "Invalid Duration" if [hours, minutes, seconds, milliseconds].all?(&:nil?)

@@ -2129,7 +2129,7 @@
      end

      # feet -- 6'5"
      if (match = unit_string.match(FEET_INCH_REGEX))
        feet_str, inches = match.values_at(:feet, :inches)
        feet = Integer(feet_str)
        return copy(if feet.negative?
@@ -2140,7 +2140,7 @@
      end

      # weight -- 8 lbs 12 oz
      if (match = unit_string.match(LBS_OZ_REGEX))
        pounds_str, oz = match.values_at(:pounds, :oz)
        pounds = Integer(pounds_str)
        return copy(if pounds.negative?
@@ -2151,7 +2151,7 @@
      end

      # stone -- 3 stone 5, 2 stone, 14 stone 3 pounds, etc.
      if (match = unit_string.match(STONE_LB_REGEX))
        stone_str, pounds = match.values_at(:stone, :pounds)
        stone = Integer(stone_str)
        return copy(if stone.negative?
@@ -2199,7 +2199,7 @@
 
       @scalar /= bottom_scalar
 
-      @numerator   ||= UNITY_ARRAY
+      @numerator ||= UNITY_ARRAY
       @denominator ||= UNITY_ARRAY
       @numerator = top.scan(unit_match_regex).delete_if(&:empty?).compact if top
       @denominator = bottom.scan(unit_match_regex).delete_if(&:empty?).compact if bottom