---
id: LANG-7
family: GR-LANG
level: core
profiles: [runtime]
posture: normative-target
added: "1.0"
changed: "1.0"
source: https://flowdrop.io/spec/rules/gr-lang/lang-7
specification: FlowDrop Workflow Specification 1.0-draft
licence: CC BY 4.0
---

# LANG-7 — Twig yields an escaped string and treats a missing variable as empty

*GR-LANG (Part I) · level: core · profiles: runtime · added in 1.0*

## The rule

> **Normative.** This is the rule.
>
> 1. A Twig template always produces a string, HTML-escaped unless the value is piped through `raw`.
>
> 2. A variable absent from the context renders as the empty string rather than failing.
>
> 3. A template that cannot be compiled, and a template that fails while rendering, both fail with an error saying which of the two occurred.

## Related rules

- Referenced by: LANG-6, LANG-13, LANG-26

---

Rule identifiers are permanent and are never renumbered. This specification carries
no implementation status: each implementation publishes its own standing against
these rules. Licensed CC BY 4.0.