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# override behaviour in fast_gettext/translation.rb
# so that we can interpolate our translation strings nicely
def _(key, options = {})
translation = FastGettext._(key) || key
gettext_interpolate(translation, options)
end
INTERPOLATION_RESERVED_KEYS = %w(scope default)
MATCH = /(\\\\)?\{\{([^\}]+)\}\}/
def gettext_interpolate(string, values)
return string unless string.is_a?(String)
if values.is_a?(Hash)
string.gsub(MATCH) do
escaped, pattern, key = $1, $2, $2.to_sym
if escaped
pattern
elsif INTERPOLATION_RESERVED_KEYS.include?(pattern)
raise ReservedInterpolationKey.new(pattern, string)
elsif !values.include?(key)
raise MissingInterpolationArgument.new(pattern, string)
else
values[key].to_s
end
end
else
reserved_keys = if defined?(I18n::RESERVED_KEYS) # rails 3+
I18n::RESERVED_KEYS
else
I18n::Backend::Base::RESERVED_KEYS
end
string % values.except(*reserved_keys)
end
end
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