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CHANGELOG.md

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Changelog for Elixir v1.3

v1.3.0-dev

1. Enhancements

EEx

  • [EEx.Engine] Support an init/1 function in engines that will return the initial buffer (defaults to an empty string)

Elixir

  • [File] Support IO devices in File.copy/3
  • [Compiler] Emit a summary of compilation errors when modules are missing
  • [Regex] Support :include_captures in Regex.split/3

ExUnit

  • [ExUnit] Show pinned variables on failed assert ^left = right and assert match?(^left, right) assertions

IEx

  • [IEx.Autocomplete] Improve IEx expand to handle functions after &

Logger

  • [Logger] Introduce Logger.reset_metadata/0,1

Mix

2. Bug fixes

Elixir

  • [Application] Ensure Application.spec/2 returns nil for unknown applications
  • [Inspect] Ensure binaries break into new lines when inspected
  • [Kernel] Do not choke on capture operator with argument above &191
  • [Kernel] Raise if defstruct is called multiple times
  • [Macro] Fix Macro.to_string/1 on a call of a capture argument, for example &(&1).(:x)

Mix

  • [Mix] Improve task not found message when Mix would include the not found task as a suggestion due to different casing

3. Soft deprecations (no warnings emitted)

4. Deprecations

This release deprecates many APIs that have been soft-deprecated in previous Elixir versions.

Elixir

  • [Dict] Dict is no longer a behaviour and its functions will be deprecated in upcoming releases
  • [Enum] Passing a non-map to Enum.group_by/3 is deprecated
  • [Kernel] \x{H*} in strings/sigils/char lists is deprecated
  • [Kernel] Add deprecation for defdelegate list arguments and :append_first option
  • [Keyword] Keyword.size/1 is deprecated in favor of Kernel.length/1
  • [Map] Map.size/1 is deprecated in favor of Kernel.map_size/1
  • [Regex] The option /r (for ungreedy) has been deprecated in favor of /U
  • [Set] Set is no longer a behaviour and its functions will be deprecated in upcoming releases
  • [String] String.valid_character?/1 is deprecated in favor of String.valid?/1 with pattern matching
  • [Task] Task.find/2 is deprecated in favor of explicit message matching
  • [URI] Passing a non-map to URI.decode_query/3 is deprecated