pub fn find_undefined_variables(
content: &str,
data: &HashMap<String, Value>,
) -> Vec<String>Expand description
Find template variables referenced in content that are not defined in
data. Returns the list of undefined variable names (with nested
attribute access like "pkgg.version"). This uses minijinja’s static
analysis to detect undeclared variables, so it does not depend on
runtime control flow.
Returns an empty Vec when data is empty (no data configured means
template rendering is a no-op) or when the content has no template
syntax.