Custom rules

Custom overriding rules can be assigned in PluralRules property. [Demo]

# Configuration
TemplateFormat: BraceNumeric
PluralRules: Unicode.CLDR41

English:
- Culture: en
  Items:
  - Key: Namespace.ExitRoundabout
    # Override earlier "PluralRules" where first four ordinals have explicit cases: one, two, three, four, other
    PluralRules: > 
      [Category=ordinal,Culture=en,Case=one,Required=True] n % 10=1 and n % 100!=11
      [Category=ordinal,Culture=en,Case=two,Required=True] n % 10=2 and n % 100!=12	
      [Category=ordinal,Culture=en,Case=three,Required=True] n % 10=3 and n % 100!=13
      [Category=ordinal,Culture=en,Case=four,Required=True] n % 10=4 and n % 100!=14
      [Category=ordinal,Culture=en,Case=other,Required=True]
    Cases: 
    - Text: "Take first exit."
      Plurals: "0:ordinal:one"
    - Text: "Take second exit."
      Plurals: "0:ordinal:two"
    - Text: "Take third exit."
      Plurals: "0:ordinal:three"
    - Text: "Take fourth exit."
      Plurals: "0:ordinal:four"
    - Text: "Take {0}th exit."
      Plurals: "0:ordinal:other"

Finnish:
- Culture: fi
  Items:
  - Key: Namespace.ExitRoundabout
    # Override earlier "PluralRules" where first four ordinals have explicit cases: one, two, three, four, other
    PluralRules: > 
      [Category=ordinal,Culture=fi,Case=one,Required=True] n = 1
      [Category=ordinal,Culture=fi,Case=two,Required=True] n = 2
      [Category=ordinal,Culture=fi,Case=three,Required=True] n = 3
      [Category=ordinal,Culture=fi,Case=four,Required=True] n = 4
      [Category=ordinal,Culture=fi,Case=other,Required=True]
    Cases: 
    - Text: "Poistu ensimmäisestä erkanemiskaistasta."
      Plurals: "0:ordinal:one"
    - Text: "Poistu toisesta erkanemiskaistasta."
      Plurals: "0:ordinal:two"
    - Text: "Poistu kolmannesta erkanemiskaistasta."
      Plurals: "0:ordinal:three"
    - Text: "Poistu neljännestä erkanemiskaistasta."
      Plurals: "0:ordinal:four"
    - Text: "Poistu {0}. erkanemiskaistasta."
      Plurals: "0:ordinal:other"

The PluralRules "Unicode.CLDR41" does not contain pluralization rules for invariant Culture "". A custom rule can be assigned for pluralization. Another solution is to use fourth argument.

# Configuration
TemplateFormat: Detect

InvariantCulture:
- Culture: ""
  Items:
  - Key: Namespace.Apples
    # Custom "PluralRules"
    PluralRules: > 
      [Category=cardinal,Culture=,Case=zero,Required=False] n = 0
      [Category=cardinal,Culture=,Case=one,Required=True] i=1 and v=0
      [Category=cardinal,Culture=,Case=other,Required=True]
      [Category=ordinal,Culture=,Case=one,Required=True] n % 10=1 and n % 100!=11
      [Category=ordinal,Culture=,Case=two,Required=True] n % 10=2 and n % 100!=12	
      [Category=ordinal,Culture=,Case=few,Required=True] n % 10=3 and n % 100!=13
      [Category=ordinal,Culture=,Case=other,Required=True]
    Cases: 
    - Text: "You've got {0} apples."
      Plurals: "0:cardinal:other"
    - Text: "You've got an apple."
      Plurals: "0:cardinal:one"
    - Text: "You've got no apples."
      Plurals: "0:cardinal:zero"