hashicorp / packer

It says in the docs when describing template sequences that "These are described in more detail in the following section", but then it's barely expanded upon in the next section:

packer/website/content/docs/templates/hcl_templates/expressions.mdx

Lines 422 to 431 in 76de1d3

    
           In both quoted and heredoc string expressions, Packer supports template 
        
           sequences that begin with `${` and `%{`. These are described in more detail 
        
           in the following section. To include these sequences _literally_ without 
        
           beginning a template sequence, double the leading character: `$${` or `%%{`. 
        
           ## String Templates 
        
           Within quoted and heredoc string expressions, the sequences `${` and `%{` begin 
        
           _template sequences_. Templates let you directly embed expressions into a string 
        
           literal, to dynamically construct strings from other values.

We should probably try and expand that section. I'm guessing we can draw heavily on the corresponding docs for Terraform, but it would be nice if someone could confirm that Packer supports the same string template syntax as Terraform.

	In both quoted and heredoc string expressions, Packer supports template
	sequences that begin with `${` and `%{`. These are described in more detail
	in the following section. To include these sequences _literally_ without
	beginning a template sequence, double the leading character: `$${` or `%%{`.

	## String Templates

	Within quoted and heredoc string expressions, the sequences `${` and `%{` begin
	_template sequences_. Templates let you directly embed expressions into a string
	literal, to dynamically construct strings from other values.

Document string templates