Bump actions/cache from 3 to 4

.cirrus.yml

@@ -0,0 +1,50 @@
+env:
+  CIRRUS_CLONE_DEPTH: 50
+  ELIXIR_ASSERT_TIMEOUT: 2000
+  ELIXIRC_OPTS: "--warnings-as-errors"
+  ERLC_OPTS: "warnings_as_errors"
+  LANG: C.UTF-8
+
+test_template: &DEFAULT_TEST_SETTINGS
+  # don't cancel the task execution if it's master or a release branch
+  auto_cancellation: $CIRRUS_BRANCH != 'master' && $CIRRUS_BRANCH !=~ 'v\d+\.\d+.*'
+
+test_freebsd_task:
+  <<: *DEFAULT_TEST_SETTINGS
+
+  name: FreeBSD 13.0
+  alias: FreeBSD Stable
+
+  freebsd_instance:
+    image_family: freebsd-13-0
+    cpu: 8
+    memory: 7424Mi
+
+  env:
+    CHECK_REPRODUCIBLE: true
+    LC_ALL: en_US.UTF-8
+    PATH: $PATH:/usr/local/lib/erlang24/bin
+
+  install_script:
+    - pkg install -y erlang-runtime24 git gmake
+    - rm -rf .git
+    - gmake compile
+
+  build_info_script: bin/elixir --version
+
+  test_formatted_script:
+    - gmake test_formatted &&
+      echo "All Elixir source code files are properly formatted."
+
+  dialyzer_script: dialyzer -pa lib/elixir/ebin --build_plt --output_plt elixir.plt --apps lib/elixir/ebin/elixir.beam lib/elixir/ebin/Elixir.Kernel.beam
+
+  test_erlang_script: gmake test_erlang
+
+  test_elixir_script: gmake test_elixir
+
+  check_reproducible_script: |
+    if [ -n "$CHECK_REPRODUCIBLE" ]; then
+      gmake check_reproducible
+    else
+      echo "The reproducibility of the build is only checked in the last stable Erlang/OTP version."
+    fi

.formatter.exs

@@ -0,0 +1,19 @@
+[
+  inputs: [
+    "lib/*/{lib,unicode,test}/**/*.{ex,exs}",
+    "lib/*/*.exs",
+    "lib/ex_unit/examples/*.exs",
+    ".formatter.exs"
+  ],
+  locals_without_parens: [
+    # Formatter tests
+    assert_format: 2,
+    assert_format: 3,
+    assert_same: 1,
+    assert_same: 2,
+
+    # Errors tests
+    assert_eval_raise: 3
+  ],
+  normalize_bitstring_modifiers: false
+]

.gitattributes

@@ -1 +1,3 @@
 lib/elixir/test/elixir/fixtures/*.txt text eol=lf
+*.ex diff=elixir
+*.exs diff=elixir

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+---
+blank_issues_enabled: true
+
+contact_links:
+  - name: Discuss proposals
+    url: https://groups.google.com/g/elixir-lang-core
+    about: Send proposals for new ideas to our mailing list
+
+  - name: Ask questions and support
+    url: https://elixirforum.com/
+    about: Ask questions, provide support and more on Elixir Forum

.github/ISSUE_TEMPLATE/issue.yml

@@ -0,0 +1,53 @@
+---
+name: Report an issue
+description:
+  Tell us about something that is not working the way we (probably) intend
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Thank you for contributing to Elixir! :heart:
+
+
+        Please, do not use this form for guidance, questions or support.
+        Try instead in [Elixir Forum](https://elixirforum.com),
+        the [IRC Chat](https://web.libera.chat/#elixir),
+        [Stack Overflow](https://stackoverflow.com/questions/tagged/elixir),
+        [Slack](https://elixir-slackin.herokuapp.com),
+        [Discord](https://discord.gg/elixir) or in other online communities.
+
+  - type: textarea
+    id: elixir-and-otp-version
+    attributes:
+      label: Elixir and Erlang/OTP versions
+      description: Paste the output of `elixir --version` here.
+    validations:
+      required: true
+
+  - type: input
+    id: os
+    attributes:
+      label: Operating system
+      description: The operating system that this issue is happening on.
+    validations:
+      required: true
+
+  - type: textarea
+    id: current-behavior
+    attributes:
+      label: Current behavior
+      description: >
+        Include code samples, errors, and stacktraces if appropriate.
+
+
+        If reporting a bug, please include the reproducing steps.
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: A short description on how you expect the code to behave.
+    validations:
+      required: true

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/ci.yml

@@ -0,0 +1,129 @@
+name: CI
+
+on: [pull_request, push]
+
+env:
+  ELIXIR_ASSERT_TIMEOUT: 2000
+  ELIXIRC_OPTS: "--warnings-as-errors"
+  ERLC_OPTS: "warnings_as_errors"
+  LANG: C.UTF-8
+
+permissions:
+  contents: read
+
+jobs:
+  test_linux:
+    name: Linux, ${{ matrix.otp_release }}, Ubuntu 18.04
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - otp_release: OTP-25.0
+            otp_latest: true
+          - otp_release: OTP-24.3
+          - otp_release: OTP-24.0
+          - otp_release: OTP-23.3
+          - otp_release: OTP-23.0
+          - otp_release: master
+            development: true
+          - otp_release: maint
+            development: true
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 50
+      - name: Install Erlang/OTP
+        run: |
+          cd $RUNNER_TEMP
+          wget -O otp.tar.gz https://repo.hex.pm/builds/otp/ubuntu-18.04/${{ matrix.otp_release }}.tar.gz
+          mkdir -p otp
+          tar zxf otp.tar.gz -C otp --strip-components=1
+          otp/Install -minimal $(pwd)/otp
+          echo "$(pwd)/otp/bin" >> $GITHUB_PATH
+      - name: Compile Elixir
+        run: |
+          rm -rf .git
+          make compile
+          echo "$PWD/bin" >> $GITHUB_PATH
+      - name: Build info
+        run: bin/elixir --version
+      - name: Check format
+        run: make test_formatted && echo "All Elixir source code files are properly formatted."
+      - name: Run Dialyzer
+        run: dialyzer -pa lib/elixir/ebin --build_plt --output_plt elixir.plt --apps lib/elixir/ebin/elixir.beam lib/elixir/ebin/Elixir.Kernel.beam
+      - name: Erlang test suite
+        run: make test_erlang
+        continue-on-error: ${{ matrix.development }}
+      - name: Elixir test suite
+        run: make test_elixir
+        continue-on-error: ${{ matrix.development }}
+      - name: Check reproducible builds
+        run: taskset 1 make check_reproducible
+        if: ${{ matrix.otp_latest }}
+      - name: Build docs
+        if: ${{ matrix.otp_latest }}
+        run: |
+          git config --global advice.detachedHead false
+          EX_DOC_LATEST_STABLE_VERSION=$(curl -s https://hex.pm/api/packages/ex_doc | jq --raw-output '.latest_stable_version')
+          for branch in main v${EX_DOC_LATEST_STABLE_VERSION}; do
+            echo "Building docs with ExDoc ${branch}"
+            cd ..
+            git clone https://github.com/elixir-lang/ex_doc.git --branch ${branch} --depth 1
+            cd ex_doc
+            ../elixir/bin/mix do local.rebar --force + local.hex --force + deps.get + compile
+            cd ../elixir/
+            make docs
+            rm -rf ../ex_doc/
+          done
+
+  test_windows:
+    name: Windows, OTP-${{ matrix.otp_release }}, Windows Server 2019
+    strategy:
+      matrix:
+        otp_release: ['23.3']
+    runs-on: windows-2019
+    steps:
+      - name: Configure Git
+        run: git config --global core.autocrlf input
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 50
+      - name: Cache Erlang/OTP package
+        uses: actions/cache@v4
+        with:
+          path: C:\Users\runneradmin\AppData\Local\Temp\chocolatey\erlang
+          key: OTP-${{ matrix.otp_release }}-windows-2019
+      - name: Install Erlang/OTP
+        run: choco install -y erlang --version ${{ matrix.otp_release }}
+      - name: Compile Elixir
+        run: |
+          remove-item '.git' -recurse -force
+          make compile
+      - name: Build info
+        run: bin/elixir --version
+      - name: Check format
+        run: make test_formatted && echo "All Elixir source code files are properly formatted."
+      - name: Erlang test suite
+        run: make --keep-going test_erlang
+      - name: Elixir test suite
+        run: |
+          del c:/Windows/System32/drivers/etc/hosts
+          make --keep-going test_elixir
+
+  check_posix_compliant:
+    name: Check POSIX-compliant
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 50
+      - name: Install Shellcheck
+        run: |
+          sudo apt update
+          sudo apt install -y shellcheck
+      - name: Check POSIX-compliant
+        run: |
+          shellcheck -e SC2039,2086 bin/elixir && echo "bin/elixir is POSIX compliant"
+          shellcheck bin/elixirc && echo "bin/elixirc is POSIX compliant"
+          shellcheck bin/iex && echo "bin/iex is POSIX compliant"

.github/workflows/notify.exs

@@ -0,0 +1,62 @@
+# #!/usr/bin/env elixir
+[tag] = System.argv()
+
+Mix.install([
+  {:req, "~> 0.2.1"},
+  {:jason, "~> 1.0"}
+])
+
+%{status: 200, body: body} =
+  Req.get!("https://api.github.com/repos/elixir-lang/elixir/releases/tags/#{tag}")
+
+if body["draft"] do
+  raise "cannot notify a draft release"
+end
+
+## Notify on elixir-lang-ann
+
+names_and_checksums =
+  for asset <- body["assets"],
+      name = asset["name"],
+      name =~ ~r/.sha\d+sum$/,
+      do: {name, Req.get!(asset["browser_download_url"]).body}
+
+line_items =
+  for {name, checksum_and_name} <- Enum.sort(names_and_checksums) do
+    [checksum | _] = String.split(checksum_and_name, " ")
+    root = Path.rootname(name)
+    "." <> type = Path.extname(name)
+    "  * #{root} - #{type} - #{checksum}\n"
+  end
+
+headers = %{
+  "X-Postmark-Server-Token" => System.fetch_env!("ELIXIR_LANG_ANN_TOKEN")
+}
+
+body = %{
+  "From" => "[email protected]",
+  "To" => "[email protected]",
+  "Subject" => "Elixir #{tag} released",
+  "HtmlBody" => "https://github.com/elixir-lang/elixir/releases/tag/#{tag}\n\n#{line_items}",
+  "MessageStream": "outbound"
+}
+
+resp = Req.post!("https://api.postmarkapp.com/email", {:json, body}, headers: headers)
+IO.puts("#{resp.status} elixir-lang-ann\n#{inspect(resp.body)}")
+
+## Notify on Elixir Forum
+
+headers = %{
+  "api-key" => System.fetch_env!("ELIXIR_FORUM_TOKEN"),
+  "api-username" => "Elixir"
+}
+
+body = %{
+  "title" => "Elixir #{tag} released",
+  "raw" => "https://github.com/elixir-lang/elixir/releases/tag/#{tag}\n\n#{body["body"]}",
+  # Elixir News
+  "category" => 28
+}
+
+resp = Req.post!("https://elixirforum.com/posts.json", {:json, body}, headers: headers)
+IO.puts("#{resp.status} Elixir Forum\n#{inspect(resp.body)}")

.github/workflows/notify.yml

@@ -0,0 +1,28 @@
+name: Notify
+
+on:
+  release:
+    types:
+      - published
+
+permissions:
+  contents: read
+
+jobs:
+  notify:
+    runs-on: ubuntu-18.04
+    name: Notify
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 50
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: 24.3
+          elixir-version: 1.13.4
+      - name: Run Elixir script
+        env:
+          ELIXIR_FORUM_TOKEN: ${{ secret.ELIXIR_FORUM_TOKEN }}
+          ELIXIR_LANG_ANN_TOKEN: ${{ secret.ELIXIR_LANG_ANN_TOKEN }}
+        run: |
+          elixir .github./workflows/notify.exs ${{ github.ref_name }}