Clarify lookup function usage #1548
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- Add required default parameter to lookup function example - Clarify that lookup function requires a default value - Add example demonstrating modern HCL2 map access syntax - Mention error behavior when lookup fails without default
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Description
I tried using a variable of type
map(string)in packer following this guide:https://developer.hashicorp.com/packer/guides/hcl/variables
This failed initially because the example didn't show the required default value.