Resolve final styles in email notifications

Feature
, ,
3

If you feel like making a pull request, I’d happily merge it :+1:

It doesn’t solve this issue but having duplicate styling is wasteful and bug-prone anyways.

I would make some slight tweaks to the deduplicate_style function, mostly to make sure both the key and the values are present.

def deduplicate_style(style)
  styles = {}

  style
    .split(";")
    .select(&:present?)
    .map { _1.split(":", 2).map(&:strip) }
    .each { |k, v| styles[k] = v if k.present? && v.present? }

  styles.map { |k, v| "#{k}:#{v}" }.join(";")
end