Related Phoenix.LiveView formatter pull
request: https://github.com/phoenixframework/phoenix_live_view/pull/3654
On Wednesday, January 29, 2025 at 11:02:31 PM UTC+1 Bart Blast wrote:
> *Problem *
>
> Currently, formatter plugins cannot receive custom options. This
> limitation becomes problematic in scenarios where plugins need
> configuration to determine their scope or behavior.
> *Real-world Example *
>
> The Phoenix LiveView formatter plugin formats all ~H sigils in the
> codebase. However, ~H sigils are general-purpose and can be used by any
> library (e.g., Hologram uses them for its own purposes). This leads to
> issues:
>
> - When Hologram codebase is formatted, the LiveView formatter raises
> errors because it incorrectly attempts to parse Hologram's ~H sigils as
> HEEx templates
> - Currently, there's no way to tell the LiveView formatter which paths
> should be formatted and which should be ignored
>
> *Proposal *
>
> Allow specifying custom options for formatter plugins in .formatter.exs:
>
> Current syntax:
> [
> # ...
> formatters: [MyLib1.Formatter, MyLib2.Formatter],
> # ...
> ]
>
> Proposed syntax:
> [
> # ...
> formatters: [MyLib1.Formatter, {MyLib2.Formatter, a: 1, b: 2}],
> # ...
> ]
>
> *Benefits *
>
> 1. Plugins can receive configuration to customize their behavior
> 2. Solves the LiveView vs Hologram formatter collision by allowing
> users to specify which paths should be formatted by which plugin
> 3. More flexible and configurable formatting system overall
>
> *Implementation Notes *
>
> - The formatter would pass these options to the plugin's formatting
> functions
> - Plugins not requiring options can still be specified using the
> current syntax
> - Backward compatible change - existing formatter configurations would
> continue to work
>
>
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