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@github-actions github-actions released this 19 Jun 11:46
· 1093 commits to main since this release
v1.15.0
9fd85b0

Official announcement: https://elixir-lang.org/blog/2023/06/19/elixir-v1-15-0-released/

1. Enhancements

EEx

  • [EEx] Include source code snippets in syntax errors

Elixir

  • [Calendar] Add support for epoch time (%s) to Calendar.strftime/2
  • [Code] Code.format_string!/2 now converts 'charlists' into ~c"charlists" by default
  • [Code] Add :on_undefined_variable to the compiler options to preserve the warning behaviour which was deprecated back in Elixir v1.4
  • [Code] Add Code.loaded?/1 and Code.ensure_all_loaded(!)/1
  • [Code] Add Code.prepend_paths/1, Code.append_paths/1, and Code.delete_paths/1
  • [Code] Add Code.with_diagnostics/2 to return diagnostics when compiling and evaluating code
  • [Code.Fragment] Support nested expressions in Code.Fragment.cursor_context/1
  • [Code.Fragment] Keep operators and no paren calls in Code.Fragment.container_cursor_to_quoted/1
  • [Date] Add Date.before?/2 and Date.after?/2
  • [DateTime] Add DateTime.before?/2 and DateTime.after?/2
  • [DateTime] Support precision in DateTime.utc_now/2
  • [File] Support distributed File.Stream
  • [Inspect] Inspect now renders 'charlists' as ~c"charlists" by default
  • [Kernel] Break down case and cond inside dbg/2
  • [Kernel] Add t:nonempty_binary/0 and t:nonempty_bitstring/0
  • [Kernel] Treat @behaviours as runtime dependencies
  • [Kernel] Do not add runtime dependencies for alias references in patterns and guards
  • [Kernel] Warn for nested calls without parens inside keywords
  • [Kernel] Support for multi-letter uppercase sigils
  • [Kernel] Introduce mechanism to collect several errors in a module. Previously, as soon as there was a compilation error, compilation would fail. Now the compiler became a bit smarter and will report multiple errors whenever possible as multiple error: ... messages, similar to warning: ...
  • [Kernel] Raise instead of warning on undefined variables. Previously, an undefined variable would attempt to invoke a function of the same name, which led to confusing error messages, especially to newcomers. To enable the previous behaviour, invoke Code.compiler_options(on_undefined_variable: :warn) at the top of your mix.exs
  • [Kernel.CLI] Support --sname undefined/--name undefined so a name is automatically generated
  • [Keyword] Add Keyword.split_with/2
  • [Macro] Improve error message when piping into an expression ending in bracket-based access
  • [Macro.Env] Add Macro.Env.lookup_alias_as/2
  • [Map] Add Map.split_with/2
  • [Map] Add Map.intersect/2 and Map.intersect/3
  • [MapSet] Add MapSet.split_with/2
  • [MapSet] Optimize most functions
  • [NaiveDateTime] Add NaiveDateTime.beginning_of_day/1 and NaiveDateTime.end_of_day/1
  • [NaiveDateTime] Add NaiveDateTime.before?/2 and NaiveDateTime.after?/2
  • [NaiveDateTime] Support precision in NaiveDateTime.utc_now/2
  • [Module] Mark functions as generated in "Docs" chunk
  • [Module] Add Module.get_last_attribute/3
  • [OptionParser] Support :return_separator option
  • [Process] Add Process.alias/0,1 and Process.unalias/1
  • [Range] Add Range.split/2
  • [String] Update Unicode to version 15.0.0
  • [String] Add :fast_ascii mode to String.valid?/2
  • [Supervisor] Add support for automatic shutdown in Supervisor
  • [System] Support :lines in System.cmd/3 to capture output line by line
  • [Task] Remove head of line blocking on Task.yield_many/2
  • [Task] Enable selective receive optimizations in Erlang/OTP 26+
  • [Task] Reduce tasks footprint by avoiding unecessary work during spawning
  • [Task.Supervisor] Do not copy args on temporary Task.Supervisor.start_child/2
  • [Time] Add Time.before?/2 and Time.after?/2
  • [URI] Add URI.append_path/2

ExUnit

  • [ExUnit] Add more color configuration to ExUnit CLI formatter
  • [ExUnit.Callbacks] Accept {module, function} tuples in ExUnit setup callbacks
  • [ExUnit.Case] Add ExUnit.Case.get_last_registered_test/1
  • [ExUnit.Doctest] Add ExUnit.DocTest.doctest_file/2
  • [ExUnit.Doctest] Include doctest_data in doctest tags
  • [ExUnit.Formatter] When comparing two anonymous functions, defined at the same place but capturing a different environment, we will now also diff the environments

IEx

  • [IEx] Make pry opt-in on dbg with --dbg pry
  • [IEX] Support IEX_HOME
  • [IEx.Autocomplete] Only provide aliases when autocompleting alias, import, and require
  • [IEx.Autocomplete] Provide field completion on map and struct updates
  • [IEx.Helpers] Add runtime_info(:allocators)
  • [IEx.Info] Implement protocol for Range, DateTime, and Regex

Logger

  • [Logger] Add Logger.add_handlers/1 and Logger.default_formatter/1
  • [Logger] Introduce default_formatter and default_handler configuration for Logger which configures Erlang/OTP logger
  • [Logger] Add :always_evaluate_messages configuration to Logger
  • [Logger.Formatter] Implement the Erlang Logger formatter API
  • [Logger.Formatter] Add support for ports in Logger metadata

Mix

  • [mix app.start] Allow applications to be started concurrently via the :start_concurrently configuration
  • [mix compile] Set --all-warnings by default
  • [mix compile] Reduce the amount of filesystem lookups for path dependencies by storing timestamps in manifests
  • [mix compile] Track digests of @external_resources
  • [mix compile.app] Write optional_applications to .app file
  • [mix compile.elixir] Add --purge-consolidation-path-if-stale which will purge the given consolidation path if compilation is required
  • [mix deps.compile] Automatically recompile dependencies if their compile env changes
  • [mix deps.get] Automatically install Hex and Rebar on mix deps.get/mix deps.update
  • [mix deps.get] Support --check-locked which raises if changes to the lockfile are required
  • [mix eval] Allow passing additional arguments
  • [mix format] Support --no-exit option
  • [mix format] Allow multiple formatters per file extension and sigil
  • [mix format] Show diffs whenever --check-formatted fails
  • [mix format] Allow the formatting root to be configured
  • [mix loadpaths] Cache deps and archive loadpaths in Erlang/OTP 26
  • [mix profile.fprof] Support --trace-to-file to improve performance when working with large outputs
  • [mix release] Allow passing additional arguments to the eval command
  • [mix xref graph] Support --output flag
  • [Mix.Project] Support def cli to unify all CLI defaults in a single place
  • [Mix.Project] Add Mix.Project.deps_tree/1

2. Bug fixes

Elixir

  • [Code.Formatter] Fix a scenario where a keyword followed by parenthesis could go above the maximum line length
  • [Code.Formatter] Remove unnecessary parens in nullary type funs
  • [Exception] Fix operator precedence when printing guards in Exception.blame/3
  • [File] Do not raise if there are file system race conditions in File.cp/2
  • [File] Do not raise when deleting write-only empty directories on File.rm_rf/1
  • [Kernel] Expand macros on the left side of -> in try/rescue
  • [Kernel] Raise on misplaced ... inside typespecs
  • [Kernel] Do not import behaviour_info and module_info functions from Erlang modules
  • [Kernel] Raise when macros are given to dialyzer
  • [Kernel.ParallelCompiler] Make sure compiler doesn't crash when there are stray messages in the inbox
  • [Kernel.ParallelCompiler] Track compile and runtime warnings separately
  • [Module] Ensure that Module.get_attribute/3 returns nil and not the given default value when an attribute has been explicitly set as nil
  • [System] Fix race condition when a script would terminate before System.stop/1 executes
  • [Task] Do not double log Task failure reports
  • [URI] Make sure URI.merge/2 works accordingly with relative paths

ExUnit

  • [ExUnit] Fix crash when @tag capture_log: true was set to true and the Logger application was shut down in the middle of the test
  • [ExUnit] Do not merge context as tags inside the runner to reduce memory usage when emitting events to formatters
  • [ExUnit] Mark test cases as invalid when an exit occurs during setup_all
  • [ExUnit] Do not expand or collect vars from quote in ExUnit assertions
  • [ExUnit.DocTest] Ensure proper line is returned when failing to parse doctest results
  • [ExUnit.Doctest] Fix line information when a doctest with multiple assertions fails

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
  • [IEx] Do not perform completion for prompts triggered during code evaluation

Mix

  • [mix compile] Include cwd in compiler cache key
  • [mix release] Fix Windows service when invoking erlsrv.exe in path with spaces
  • [mix xref] Raise early if mix xref is used at the umbrella root

3. Soft deprecations (no warnings emitted)

Elixir

  • [File] File.cp/3 and File.cp_r/3 with a function as third argument
    is deprecated in favor of a keyword list
  • [Kernel] Require pin variable when accessing variable inside binary size in match
  • [Kernel.ParallelCompiler] Require the :return_diagnostics option to be
    set to true when compiling or requiring code

Logger

  • [Logger] add_backend/2, remove_backend/2, and configure_backend/2 have been deprecated
    in favor of the new :logger_backends dependency
  • [Logger] The :console configuration has been deprecated in favor of :default_formatter
  • [Logger] The :backends configuration has been deprecated in favor of Logger.add_handlers/1

Mix

  • [Mix.Project] :preferred_cli_env is deprecated in favor of :preferred_envs in def cli
  • [Mix.Project] :preferred_cli_target is deprecated in favor of :preferred_targets in def cli
  • [mix local] The environment variable HEX_MIRROR is deprecated in favor of HEX_BUILDS_URL

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
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