'How do I add an uncountable inflection for a non-word character in Rails

In a Rails app I have a number of measurements to display in a human readable form that include both a value and units. Sometimes the units string needs to be pluralized like '1 minute, 2 minutes' but other times not like '1 kg, 2 kg'. I was able to solve this by adding 'kg' do the list of inflect.uncountable in inflections.rb. However, adding '%' to the list had no effect. I confirmed in the console that '%' was added to @uncountables, but calling pluralize(90, '%') still returns 90 %s.

I was able to get around this by doing inflect.irregular '%', '%' but that doesn't seem like the proper use of irregular.

Is there something I can add like an escape character to get rails to recognize '%' in the uncountables array? Or alternatively, is there a better way to handle this outside of inflections?

For reference, inflections.rb right now looks like

ActiveSupport::Inflector.inflections(:en) do |inflect|
  # inflect.plural /^(ox)$/i, '\1en'
  # inflect.singular /^(ox)en/i, '\1'
  inflect.irregular '%', '%'
  inflect.uncountable %w( bpm kg mL )
end
ruby-on-railsruby-on-rails-4pluralize


Solution 1:[1]

inflect.uncountable works only with words, or better said, with whatever Regex deems as being a word. I'm not sure if this is a shortcoming of the implementation or the intended behavior.

inflect.irregular '%', '%' looks like a perfect workaround to me.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Mihai Dinculescu

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