Changelog for Elixir v1.19

v1.19.0-dev

1. Enhancements

Elixir

[Code] Add :migrate_call_parens_on_pipe formatter option
[Kernel] Support min/2 and max/2 as guards

IEx

[IEx.Autocomplete] Functions annotated with @doc group: "Name" metadata will appear within their own groups in autocompletion

2. Bug fixes

3. Soft deprecations (no warnings emitted)

Elixir

[Node] Node.start/2-3 is deprecated in favor of Node.start/2 with a keyword list

Mix

[mix compile] --no-protocol-consolidation is deprecated in favor of --no-consolidate-protocols for consistency with mix.exs configuration
[mix compile.protocols] Protocol consolidation is now part of compile.elixir and has no effect

4. Hard deprecations

Elixir

[Code] The on_undefined_variable: :warn is deprecated. Relying on undefined variables becoming function calls will not be supported in the future
[File] Passing a callback as third argument to File.cp/3 is deprecated, pass it as a on_conflict: callback option instead
[File] Passing a callback as third argument to File.cp_r/3 is deprecated, pass it as a on_conflict: callback option instead
[Kernel.ParallelCompiler] Passing return_diagnostics: true as an option is required on compile, compile_to_path and require

Logger

[Logger] The :backends configuration is deprecated, either set the :default_handler to false or start backends in your application start callback

Mix

[mix] The :default_task, :preferred_cli_env, and :preferred_cli_target configuration inside def project in your mix.exs has been deprecated in favor of :default_task, :preferred_envs and :preferred_targets inside the def cli function
[mix do] Using commas as task separator in mix do (such as mix do foo, bar) is deprecated, use + instead (as in mix do foo + bar)

v1.18

The CHANGELOG for v1.18 releases can be found in the v1.18 branch.