---
id: SLICE-0006
type: slice
status: ready
parent: NS-0002
title: Complete context-aware hemplate completions
refs:
  - REQUIREMENTS.md
  - docs/editor-support.md
  - docs/hemplate-syntax.md
  - hemx-lsp/src/main.rs
---

## Objective

Make completion useful for the real hemplate surface: directives, dynamic attributes, and `data-hemx-*` facts should complete in context without inventing syntax.

## Authority

`docs/hemplate-syntax.md` defines the public syntax; `docs/editor-support.md` and `REQUIREMENTS.md` `diagnostics/006` require completions to support that surface while remaining subordinate to build validation.

## Close when

- Completion items cover `h-if`, `h-for`, `h-key`, `h-match`, `h-case`, `{+ +}`, `{+= =+}`, `+attr`, and known `data-hemx-*` authoring facts.
- Tests prove context filters: directive completions in tag attributes, snippet/text completions in text positions, and no irrelevant completions inside quoted Rust expressions.
- Completion docs/details point to the existing syntax docs rather than new invented rules.

## Verification

- `cargo test -p hemx-lsp`
- Manual check if needed: request `textDocument/completion` against a fixture through the LSP test harness.

## Non-goals

- Do not add Rust type inference or project-wide symbol completion in this slice.
- Do not make completion acceptance a build authority.

## Evidence

`hemx-lsp/src/main.rs` already exposes `completionProvider` and `hemplate_completion_items` anchors.