Changelog for Elixir v1.15

This release requires Erlang/OTP 24 and later.

v1.15.0-dev

1. Enhancements

Elixir

[Code] Code.format_string/2 now converts 'charlists' into ~c"charlists" by default
[Inspect] Inspect now renders 'charlists' as ~c"charlists" by default
[Kernel] Add t:nonempty_binary/0 and t:nonempty_bitstring/0
[Kernel] Treat @behaviours as runtime dependencies
[Kernel.CLI] Support --sname undefined/--name undefined so a name is automatically generated
[Keyword] Add Keyword.split_with/2
[Map] Add Map.split_with/2
[MapSet] Add MapSet.split_with/2
[Process] Add Process.alias/0,1 and Process.unalias/1
[Sets] Optimize many functions in MapSet
[String] Update Unicode to version 15.0.0
[Supervisor] Add support for automatic shutdown in Supervisor

Mix

[mix compile.app] Write optional_applications to .app file
[mix deps.get] Automatically install Hex and Rebar on mix deps.get/mix deps.update
[mix format] Allow multiple formatters per file extension and sigil
[mix format] Show diffs whenever --check-formatted fails

2. Bug fixes

Elixir

[Kernel.ParallelCompiler] Make sure compiler doesn't crash when there are stray messages in the inbox

ExUnit

[ExUnit] Do not merge context as tags inside the runner to reduce memory usage when emitting events to formatters

IEx

[IEx] Do not spawn a process to read IO. This fixes a bug where multiline paste stopped working whenever the input reader was killed

3. Soft deprecations (no warnings emitted)

4. Hard deprecations

Elixir

[Calendar] Calendar.ISO.day_of_week/3 is deprecated in favor of Calendar.ISO.day_of_week/4
[Exception] Exception.exception?/1 is deprecated in favor of Kernel.is_exception/1
[Kernel] Deprecate ... as a valid function call identifier
[Regex] Regex.regex?/1 is deprecated in favor of Kernel.is_struct/2

Logger

[Logger] Logger.warn/2 is deprecated in favor of Logger.warning/2

v1.14

The CHANGELOG for v1.14 releases can be found in the v1.14 branch.