• Respect html_options[:form] when collection_checkboxes generates the hidden <input>.

  Riccardo Odone

• Layouts have access to local variables passed to render.

  This fixes #31680 which was a regression in Rails 5.1.

  Mike Dalessio

• Argument errors related to strict locals in templates now raise an ::ActionView::StrictLocalsError, and all other argument errors are reraised as-is.

  Previously, any ArgumentError raised during template rendering was swallowed during strict local error handling, so that an ArgumentError unrelated to strict locals (e.g., a helper method invoked with incorrect arguments) would be replaced by a similar ArgumentError with an unrelated backtrace, making it difficult to debug templates.

  Now, any ArgumentError unrelated to strict locals is reraised, preserving the original backtrace for developers.

  Also note that ::ActionView::StrictLocalsError is a subclass of ArgumentError, so any existing code that rescues ArgumentError will continue to work.

  Fixes #52227.

  Mike Dalessio

• Improve error highlighting of multi-line methods in ERB templates or templates where the error occurs within a do-end block.

  Martin Emde

• Fix a crash in ERB template error highlighting when the error occurs on a line in the compiled template that is past the end of the source template.

  Martin Emde

• Improve reliability of ERB template error highlighting. Fix infinite loops and crashes in highlighting and improve tolerance for alternate ERB handlers.

  Martin Emde

• Allow hidden_field and hidden_field_tag to accept a custom autocomplete value.

  brendon

Please check [8-0-stable]) for previous changes.