Thread:Translating talk:FreeCol/One/many plural rule for Russian/Belarusian/etc/reply (15)

The plural selector variable within the expression is not inserted into the resulting expression. If a numeric expression is required, the variable is used again outside of the expression. Thus NaN undefineds is expanded to "Horse" if %number% is one, and to "Horses" otherwise. The "default" rule is used when no %number% is supplied at all. So, I think the distinction between "other" and "default" is exactly what you are looking for.