Formatter doesn't handle sigils like `~H` in `.ex` files

[superhawk610]

Describe the bug

I have a component file with the following contents

defmodule Component do
  use Phoenix.LiveComponent

  def render(assigns) do
    ~H"""
    <div>
    <span>text</span>

    

        <span>more text
          </span>
    </div>
    """
  end
end

When format-on-save runs, I expect it to be formatted to this:

defmodule Component do
  use Phoenix.LiveComponent

  def render(assigns) do
    ~H"""
    <div>
      <span>text</span>

      <span>more text</span>
    </div>
    """
  end
end

To reproduce

Run Dexter's formatter on an .ex file that contains a sigil that a plugin should format, e.g. Phoenix.LiveView.HTMLFormatter for ~H.

Expected behavior

I expect sigil contents to be formatted using the applicable plugin(s).

Debug logs

Formatter: plugins loaded: Phoenix.LiveView.HTMLFormatter
2026/04/15 13:07:51 Formatting: /component.ex (39.099875ms, persistent)

Environment

• Dexter version (dexter --version): 0.5.3
• Elixir version (elixir --version): 1.19.5
• Editor and version: Windsurf 1.110.1
• OS: macOS Tahoe 26.4

[JesseHerrick]

Closed by #55