packer/website/source/docs/configuration/from-1.5/functions/collection/coalesce.html.md

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docs	coalesce - Functions - Configuration Language	configuration-functions-collection-coalesce-x	The coalesce function takes any number of arguments and returns the first one that isn't null nor empty.

coalesce Function

coalesce takes any number of arguments and returns the first one that isn't null or an empty string.

Examples

> coalesce("a", "b")
a
> coalesce("", "b")
b
> coalesce(1,2)
1

To perform the coalesce operation with a list of strings, use the ... symbol to expand the list as arguments:

> coalesce(["", "b"]...)
b

Related Functions

• coalescelist performs a similar operation with list arguments rather than individual arguments.