Template:Post boxes by county/coalesce
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Takes up to three parameters and returns the first non-empty one.
It does this by (which is equivalent) returning only the first (if not empty), otherwise returns the second.
| $1 | $2 | $3 | Result | Empty? |
|---|---|---|---|---|
| empty | ||||
| Galway | Galway | |||
| Ireland | Ireland | |||
| Galway | Ireland | Galway | ||
| Powys | Wales | Powys | ||
| Powys | Wales | Powys | ||
| Powys | Wales | United Kingdom | Powys | |
| Powys | United Kingdom | Powys | ||
| Wales | United Kingdom | Wales | ||
| space | Wales | United Kingdom | Wales | |
| United Kingdom | United Kingdom |