Mustache.escape should include the key | Use case: instead of not rendering empty variables, ignore them and get the {{key}}.

[kelvinauta]

When a variable in a view is empty, Mustache.render simply doesn't render anything. I'd like that when a variable is empty, it just gets ignored and the original text {{key}} is rendered instead. Here's an example with the normal output and the output I want:

Mustache.render("{{foo}} and {{bar}}", {foo: "foo"})

// Normal Output:
// foo and
// Desired Output:
// foo and {{bar}}

I thought the solution would be Mustache.escape, but the properties passed to the function are just strings with values that only get executed if the value is not empty. So, I can't do anything with empty variables.

// Current solution:
Mustache.escape = (value) => value; // This function only executes when the value exists

// What I'd like to do:
Mustache.escape = (value, key, tags) => value || `${tags[0]}${key}${tags[1]}`; // Executes whether the value is empty or not

Maybe I've missed something. If anyone knows how to achieve this, I would really appreciate the help. For now, my workaround looks something like this, but I don't like it at all:

Mustache.render("{{foo}}", {foo: "{{foo}}"}) // Preprocess the object so that empty variables are replaced with a string, allowing Mustache to render them