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CHANGELOG.md

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Changelog for Elixir v1.10

v1.10.0-dev

1. Enhancements

Elixir

  • [Code] Add :token_metadata and :literal_encoder support to Code.string_to_quoted/2
  • [Code] Add compiler tracing to lift events done by the compiler
  • [DateTime] Add DateTime.now!/2 and DateTime.shift_zone!/3
  • [Exception] Add version alonside app names in stacktraces
  • [Function] Add Function.identity/1
  • [Kernel] Warn when function head comes immediately after the implementation instead of before the implementation
  • [Keyword] Add Keyword.pop!/2 and Keyword.pop_values/2
  • [Map] Add Map.pop!/2
  • [Module] Add Module.has_attribute?/2
  • [Module] Add @compile {:no_warn_undefined, mfa_or_module} to turn off undefined function warnings
  • [String] Update to Unicode 12.1
  • [StringIO] Add :encoding option to StringIO and optimize get_chars operation

ExUnit

  • [ExUnit.Assertions] Support diffs in pattern matching and in assert_receive

Mix

  • [mix deps.compile] Add --skip-umbrella-apps flag. The new flag does not compile umbrella apps. This is useful for building caches in CD/CI pipelines.
  • [mix deps.unlock] Add --check-unused flag. The new flag raises if there are any unused dependencies in the lock file.
  • [mix release] Allow {:from_app, app_name} as a version for releases

2. Bug fixes

Elixir

  • [Module] Raise instead of silently failing when performing a write during after-compile

IEx

  • [IEx] Exit IEx session if the group leader exits
  • [IEx] Allow pry to be used in non-tty terminals

Mix

  • [Mix.Project] Make sure MIX_BUILD_PATH specifies only the build_path prefix and that env+target are still concatenated
  • [Mix.Task] Always recompile before running tasks from dependencies

3. Soft-deprecations (no warnings emitted)

Elixir

  • [Code] compiler_options/0 is deprecated in favor of compiler_option/1

Mix

  • [mix xref] calls/0 is deprecated in favor of upcoming compiler tracer
  • [mix xref] The xref.exclude option has been moved to elixirc_options.no_warn_undefined as the xref pass has been moved into the compiler

4. Hard-deprecations

Mix

  • [mix compile.xref] This check has been moved into the compiler and has no effect now
  • [mix xref deprecations] This check has been moved into the compiler and has no effect now
  • [mix xref unreachable] This check has been moved into the compiler and has no effect now

Elixir

  • [Code] Code.load_file/2 has been deprecated in favor of Code.require_file/2 or Code.compile_file/2
  • [Code] Code.loaded_files/0 and Code.unload_file/1 have been deprecated in favor of Code.required_files/0 and Code.unrequire_file/1 respectively
  • [String] String.normalize/2 has been deprecated in favor of :unicode.characters_to_nfc_binary/1 or :unicode.characters_to_nfd_binary/1 which ship as part of Erlang/OTP 20+
  • [Supervisor] The Supervisor.Spec module and its functions have been deprecated in favor of the new Supervisor child specification
  • [Supervisor] The :simple_one_for_one strategy in Supervisor has been deprecated in favor of DynamicSupervisor

Logger

  • [Logger] :compile_time_purge_level application environment configuration has been deprecated in favor of the more general :compile_time_purge_matching config

v1.9

The CHANGELOG for v1.9 releases can be found in the v1.9 branch.