1.18.0

Add experimental PowerShell scripts for elixir, elixirc, and mix on Windows. Those provide a safer entry point for running Elixir from other platforms

Add Duration.to_string/1

Support several migration options in Code.format_string!/2

Add parenthesis around -- and --- in Code.format_string!/2 to make precedence clearer

Include more metadata in Code.string_to_quoted/2 when token_metadata: true to help compute ranges from the AST

Have :capture_arg as its own entry in Code.Fragment.surround_context/2

Add Config.read_config/1

Add Enum.product_by/2 and Enum.sum_by/2

Add MissingApplicationsError exception to denote missing applications

Add a new JSON module with encoding and decoding functionality

Implement JSON.Encoder for all Calendar types

Update source code parsing to match UTS #55 latest recommendations. In particular, mixed script is allowed in identifiers as long as they are separate by underscores (_), such as http_сервер. Previously allowed highly restrictive identifiers, which mixed Latin and other scripts, such as the japanese word for t-shirt, Tシャツ, now require the underscore as well

Warn on bidirectional confusability in identifiers

Verify the type of the binary generators

Track the type of tuples in patterns and inside elem/2

Perform validation of root AST nodes in unquote and unquote_splicing to catch bugs earlier

Add source, behaviour, and record information to Docs chunk metadata

Support deterministic builds in tandem with Erlang by setting ERL_COMPILER_OPTIONS=deterministic. Keep in mind deterministic builds strip source and other compile time information, which may be relevant for programs

Allow aliases and imports to be enabled conditionally in module body

Add List.ends_with?/2

Improve dbg handling of if/2, with/1 and of code blocks

Add Macro.struct_info!/2 to return struct information mirroring mod.__info__(:struct)

Add Registry.lock/3 for local locking

Add PartitionSupervisor.resize!/2 to resize the number of partitions in a supervisor (up to the limit it was started with)

Handle arbitrarily high integer values in Process.sleep/1

Add @undefined_impl_description to customize error message when an implementation is undefined

Add __deriving__/1 as optional macro callback to Protocol, no longer requiring empty implementations

Inspect special whitespace and zero-width characters using their Unicode representation

Update Unicode to 16.0

Support parameterized tests on ExUnit.Case

Support test groups: tests in the same group never run concurrently

Add test_pid as a tag

Add IEx.configure(auto_reload: true) to automatically pick up modules recompiled from other operating system processes

Add :dot_iex support to IEx.configure/1

Add report for normal/shutdown exits in IEx

Ensure only a single operating system process can compile at a given time

Ensure only a single operating system process can fetch deps at a given time

Add mix format --migrate to migrate from deprecated functionality

Add new options and metadata to improve formatting applying by editors and other environments

Taint failure manifest if requiring or compiling tests fail

Add a :listeners configuration to listen to compilation events from the current and other operating system processes

Add API for fetching all persisted compiler diagnostics

Add API for fetching all compiler tasks

color/3 is deprecated in favor of color_doc/3

fold_doc/2 is deprecated in favor of fold/2

Deprecate unless in favor of if. Use mix format --migrate to automate the migration

Macro.struct!/2 is deprecated in favor of Macro.struct_info!/2

Defining __deriving__/3 inside the Any implementation is deprecated, derive it inside the protocol definition itself