# `AshScylla.Search.Analyzer.Normalizer`
[🔗](https://github.com/ohhi-vn/ash_scylla/blob/main/lib/ash_scylla/search/analyzer/normalizer.ex#L1)

Text normalization for the search pipeline.

Handles:
  * Lowercasing (Unicode-aware via `String.downcase/2`)
  * Unicode normalization (NFC form)
  * Punctuation and special character removal

The normalizer runs after tokenization but could also be applied to the
full text before tokenization.

# `normalize_term`

```elixir
@spec normalize_term(String.t()) :: String.t() | nil
```

Normalizes a single term.

Applies lowercase, NFC normalization, and strips surrounding punctuation.
Returns `nil` if the term becomes empty after normalization.

## Examples

    iex> Normalizer.normalize_term("Phoenix!")
    "phoenix"

    iex> Normalizer.normalize_term("  ELIXIR  ")
    "elixir"

    iex> Normalizer.normalize_term("!!!")
    nil

# `normalize_terms`

```elixir
@spec normalize_terms([String.t()]) :: [String.t()]
```

Normalizes a list of terms, removing any that normalize to `nil` or empty.

---

*Consult [api-reference.md](api-reference.md) for complete listing*