FUZZ-TP-01

Minimal template / frontmatter

{% for item in items %}{{ loop.index }}: {{ item }}{% endfor %}

Input

items: [<one>, <two>] & optional marker

Expected

The loop.* Jinja builtin validates and renders under default and --strict modes.

Observed

Default mode warns and --strict mode fails with an undeclared referenced token diagnostic for loop.index.

Requirement / ADR

Existing renderer validation requirements cover declared variables but do not document loop.* builtin handling.

Requirement / ADR follow-up

Update the existing requirement or add an ADR only if loop.* support is a genuine supported contract.

Root cause

The token validator treats the Jinja loop context object as an undeclared variable inside for-loops.

Recommended fix

Exclude documented loop.* builtins from undeclared-token validation and add strict-mode regression coverage.