Changelog for Elixir v1.13

v1.13.0-dev

[Code] Add Code.string_to_quoted_with_comments/2 and Code.quoted_to_algebra/2
[Code] Add more :token_metadata to aliases and remote calls when parsing strings
[Code] Add Code.Fragment module to provide best-effort information from code fragments. The module currently provides an updated Code.Fragment.cursor_context/2 with operator support and Code.Fragment.surround_context/2 which looks at a given position in a fragment and find its surrounding delimiters
[Code] Add {:on_module, bytecode, :none} trace to compilation tracers
[Enum] Optimize Enum.concat/1 for lists of lists
[Exception] Better format Elixir exceptions in Erlang
[Inspect] Allow default inspect fun to be set globally with Inspect.Opts.default_inspect_fun/1
[IO] Allow :eof to be given as limit to IO.getn/2
[Kernel] Make get_in consistently abort when nil values are found
[Kernel] Improve compilation times by reducing the amount of copies of the AST across compiler processes
[Kernel] Warn when ?\ is used and there is no need for a escape character
[Kernel] Track structs in typespecs as export deps instead of compile-time deps
[List] Add List.keyfind!/3
[Module] Support :nillify_clauses in Module.get_definition/3
[Module] Add Module.attributes_in/1 and Module.overridables_in/1
[OptionParser] Add "did you mean?" suggestions to OptionParser.ParseError messages
[Record] Add record reflection via @__records__
[Task] Add Task.completed/1

[IEx.Autocomplete] Add path autocompletion whenever when the cursor follows "./ or "/ or "DRIVER: where DRIVER is a single letter

[mix archive.install] Run loadconfig before building archive
[mix compile] Move Elixir version check to before deps are compiled, in order to give feedback earlier
[mix deps] Add :subdir option to git deps
[mix escript.install] Run loadconfig before building escript
[mix rebar] No longer support sub_dirs in Rebar 2 to help migration towards Rebar 3
[mix test] Support --profile-require=time to profile the time loading test files themselves
[mix test] Allow filtering modules from coverage using regex
[mix test] Allow the exit status of ExUnit to be configured and set the default to 2
[mix test] Exit with a status of 3 when coverage falls below threshold
[mix test] Write failed manifest when suite fails due to --warnings-as-errors
[mix xref] Support multiple sinks and sources in mix xref graph
[mix xref] Add --fail-above option to mix xref
[mix xref] Add --label compile-connected to mix xref
[mix xref] Add --label compile-direct to mix xref (instead of --only-direct)

[Code] Ensure bindings with no context are returned as atoms instead of {binding, nil} in eval operations
[Kernel] Improve error message on invalid argument for byte_size from binary concat
[Kernel] Raise when aliasing non-Elixir modules without :as
[Kernel] Allow unquote_splicing inside %{...} without parens
[Kernel] Ensure that waiting on a struct expansion inside a typespec is correctly tracked as waiting time in the compiler
[Kernel] Correctly parse the atom . as a keyword list key
[Kernel] Do not leak variables from the first generator in with and for special forms
[OptionParser] Validate switch types/modifiers early on to give more precise feedback
[Protocol] Add defdelegate to the list of unallowed macros inside protocols as protocols do not allow function definitions
[Protocol] Warn if @callback, @macrocallback and @optional_callbacks are defined inside protocol
[URI] Only percent decode if followed by hex digits (according to https://url.spec.whatwg.org/#percent-decode)

[ExUnit] Invalidate a module's tests in ExUnit.run/0 results if that module's setup_all fails
[ExUnit] Fix count in formatter if a module's setup_all fails

[mix deps] Raise if local dep is unavailable while compiling
[mix local.install] Do not respect MIX_DEPS_PATH for install commands
[mix release] Improve release scripts to make sure shell errors cascade by avoiding exporting and defining variables at once
[mix release] Do not boot release if RELEASE_COOKIE is empty
[Mix.Shell] Add default option to Mix.Shell.yes?

[Code] Code.cursor_context/2 is deprecated, use Code.Fragment.cursor_context/2 instead
[Macro] Macro.to_string/2 is deprecated, use Macro.to_string/1 instead
[System] System.get_pid/0 is deprecated, use System.pid/0 instead

[mix escript.build] :strip_beam option is deprecated in favor of :strip_beams
[Mix] :exit_code in Mix.raise/2 has been deprecated in favor of :exit_status
[Mix.Config] Mix.Config is deprecated in favor of Config module

The CHANGELOG for v1.12 releases can be found in the v1.12 branch.