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@josevalim josevalim released this 25 Jul 07:27
v1.5.0
117b2bf

Official announcement: https://elixir-lang.org/blog/2017/07/25/elixir-v1-5-0-released/

1. Enhancements

Elixir

  • [Access] Optimize Access.get/2
  • [Base] Optimize Base encode/decode
  • [Calendar] Implement Inspect for DateTime with Calendar.ISO
  • [Calendar] Add "ISO days" format for conversions between Calendars and Date.convert/2, Time.convert/2, NaiveDateTime.convert/2 and DateTime.convert/2 (as well as bang variants)
  • [Calendar] Add :calendar field to Time struct
  • [Calendar] Add Time.diff/3, Date.add/2, Date.diff/2, DateTime.diff/3
  • [Calendar] Add Date.range/2
  • [Calendar] Add Date.new/4, DateTime.utc_now/1, NaiveDateTime.new/8 and Time.new/5 that allow specifing calendar
  • [Enum] Add Enum.chunk_by/4 and Stream.chunk_by/4
  • [Enum] Add Enum.chunk_every/2 and Enum.chunk_every/4 with a more explicit API than Enum.chunk/2 and Enum.chunk/4
  • [Exception] Add Exception.blame/3 that adds metadata to exceptions
  • [File] Add File.read_link/1 and File.read_link!/1
  • [File] Introduce :trim_bom option for File.stream!/2
  • [Inspect] Add :printable_limit to control the limit of printable structures
  • [Integer] Add Integer.gcd/2
  • [Kernel] Add left not in right to check that the left side is not in the enumerable on the right
  • [Kernel] Use the new debug_info chunk in OTP 20. This provides a mechanism for tools to retrieve the Elixir AST from beam files
  • [Kernel] defoverridable/1 accepts a module name as argument and marks all callbacks as overridable
  • [Kernel] Allow non-quoted Unicode atoms and variables according to Unicode Annex #31 (see Unicode Syntax document)
  • [Kernel] Warn when a :__struct__ key is used when building/updating structs
  • [Kernel] Cache the AST on definitions. This speeds up the compilation time from 10% to 15% measured across different projects
  • [Kernel] Improve compiler error message on invalid patterns and guards
  • [Keyword] Add replace/3 and replace!/3 for replacing an existing key
  • [List] List.starts_with?/2
  • [Macro] Introduce Macro.generate_arguments/2
  • [Map] Optimize Map.merge/3 by choosing merging direction
  • [Map] Add replace/3 and replace!/3 for replacing an existing key
  • [Map] Raise BadMapError in Map.equal?/2 when either of the two arguments is not a map
  • [MapSet] Reduce MapSet size when serialized to approximately half
  • [Process] Add Process.cancel_timer/2
  • [Protocol] Show available implementations on Protocol.UndefinedError if the protocol has been consolidated
  • [Registry] Support ETS guard conditions in Registry.match/3
  • [Registry] Support parallel: true in Registry.dispatch/3
  • [Registry] Introduce Registry.unregister_match/4
  • [Stream] Add Stream.chunk_every/2 and Stream.chunk_every/4 with a more explicit API than Stream.chunk/2 and Stream.chunk/4
  • [String] Optimise binary pattern matching in String.split/1 and String.trim_*/1
  • [Supervisor] Add Supervisor.init/2 and Supervisor.child_spec/2
  • [Supervisor] Allow module and {module, arg} to be given to Supervisor.start_link/2 and invoke module.child_spec(arg) on each argument
  • [Task] Support :on_timeout in Task.async_stream to control how tasks are terminated
  • [Task] Add ordered: false support to Task.async_stream

ExUnit

  • [ExUnit] Show code snippet from test source file in case of test errors
  • [ExUnit] Use Exception.blame/3 when formatting test errors
  • [ExUnit] Make assert_raise/2 fail if the underlying exception has a broken message/1 implementation
  • [ExUnit] Add start_supervised/2 and stop_supervised/1 to ExUnit. Processes started by this function are automatically shut down when the test exits

IEx

  • [IEx.Autocomplete] Support autocompletion of variable names
  • [IEx.Autocomplete] Support autocompletion of functions imported using import Mod, only: [...]
  • [IEx.Evaluator] Use Exception.blame/3 when showing errors in the terminal
  • [IEx.Helpers] Add exports/1 IEx helper to list all exports in a module
  • [IEx.Helpers] Add break!/2, break!/4, breaks/0, continue/0, open/0, remove_breaks/0, remove_breaks/1, reset_break/1, reset_break/3 and whereami/1 for code debugging
  • [IEx.Helpers] No longer emit warnings for IEx commands without parentheses
  • [IEx.Helpers] Add runtime_info/0 for printing runtime system information
  • [IEx.Helpers] Add open/1 to open the source of a given module/function in your editor
  • [IEx.Info] Implement IEx.Info protocol for calendar types

Logger

  • [Logger] Add metadata: :all configuration to log all metadata

Mix

  • [mix compile.elixir] Add --all-warnings option to Elixir compiler that shows all warnings from the previous compilation (instead of just of the files being compiled)
  • [mix escript.build] Strip debug information from escripts by default and add option :strip_beam which defaults to true
  • [mix loadpaths] Ensure --no-deps-check do not trigger SCM callbacks (such as git)
  • [mix local.hex] Add --if-missing flag to local.hex mix task
  • [mix profile.cprof] Add Mix.Tasks.Profile.Cprof for count-based profiling
  • [mix new] New styling for generated applications

2. Bug fixes

Elixir

  • [Calendar] Ensure Calendar.ISO raises a readable error when reaching up the year 10000 restriction
  • [Calendar] Return {:error, :invalid_time} for wrong precision instead of crashing when parsing ISO dates
  • [Enumerable] Raise Protocol.UndefinedError on bad functions in Enumerable implementation
  • [File] Ensure recursive file operations raise on paths with null bytes (security issue reported by Griffin Byatt)
  • [File] Support :ram/:raw files in File.copy/2
  • [Inspect] Do not use colors when inspecting error messages
  • [Kernel] Support guards on anonymous functions of zero arity
  • [Kernel] Fix compilation of maps used as maps keys inside matches
  • [Kernel] Ensure do clause in with is tail call optimizable
  • [Module] on_definition/6 callback receives body wrapped in a keyword list, such as [do: body]. This solves a bug where it was impossible to distinguish between a bodyless clause and a function that returns nil.
  • [Path] Ensure recursive path operations raise on paths with null bytes (security issue reported by Griffin Byatt)
  • [Protocol] Do not lose source compile info on protocol consolidation
  • [Record] Properly escape quoted expressions passed to defrecord
  • [Regex] Fix inspect/2 for regexes with / terminator in them
  • [Registry] Ensure Registry.match/4 works with :_ as key
  • [Stream] Fix stream cycle over empty enumerable
  • [String] Consider Unicode non-characters valid according to the specification in String.valid?/1
  • [StringIO] Fix encoding and performance issues in StringIO.get_until
  • [System] Raise on paths with null bytes in System.cmd/2 and in System.find_executable/1 (security issue reported by Griffin Byatt)
  • [System] Raise on ill-formed environment variables (security issue reported by Griffin Byatt)

ExUnit

  • [ExUnit] Properly account failed tests when setup_all fails

IEx

  • [IEx] Skip autocompletion of module names that are invalid without being quoted
  • [IEx] Skip autocompletion of functions with default arguments with @doc false
  • [IEx] Do not start oldshell alongside IEx

Mix

  • [mix compile.elixir] Store multiple sources in case of module conflicts. This solves an issue where _build would get corrupted when compiling Elixir projects with module conflicts
  • [mix compile.erlang] Do not silently discard Erlang compile errors
  • [mix compile.erlang] Properly track -compile module attribute when specified as a list
  • [mix compile.protocols] Ensure protocol implementations do not "disappear" when switching between applications in umbrella projects by having separate consolidation paths per project
  • [mix compile.protocols] Do not raise when consolidating a protocol that was converted into a module

3. Soft deprecations (no warnings emitted)

Elixir

  • [Kernel] not left in right is soft-deprecated in favor of left not in right

4. Deprecations

Elixir

  • Atom.to_char_list/1, Float.to_char_list/1, Integer.to_char_list/1, Integer.to_char_list/2, Kernel.to_char_list/1, List.Chars.to_char_list/1, String.to_char_list/1 have been deprecated in favor of their to_charlist version. This aligns with the naming conventions in both Erlang and Elixir
  • [Enum] Deprecate Enum.filter_map/3 in favor of Enum.filter/2 + Enum.map/2 or for-comprehensions
  • [GenEvent] Deprecate GenEvent and provide alternatives in its docs
  • [Kernel] Using () to mean nil is deprecated
  • [Kernel] :as_char_lists value in Inspect.Opts.t/0 type, in favor of :as_charlists
  • [Kernel] :char_lists key in Inspect.Opts.t/0 type, in favor of :charlists
  • [Module] Using Erlang parse transforms via @compile {:parse_transform, _} is deprecated
  • [Stream] Deprecate Stream.filter_map/3 in favor of Stream.filter/2 + Stream.map/2
  • [String] String.ljust/3 and String.rjust/3 are deprecated in favor of String.pad_leading/3 and String.pad_trailing/3 with a binary padding
  • [String] String.strip/1 and String.strip/2 are deprecated in favor of String.trim/1 and String.trim/2
  • [String] String.lstrip/1 and String.rstrip/1 are deprecated in favor of String.trim_leading/1 and String.trim_trailing/1
  • [String] String.lstrip/2 and String.rstrip/2 are deprecated in favor of String.trim_leading/2 and String.trim_trailing/2 with a binary as second argument
  • [Typespec] char_list/0 type is deprecated in favor of charlist/0

EEx

  • [EEx] Deprecate <%= in "middle" and "end" expressions, e.g.: <%= else %> and <%= end %>
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