Add branch docs publishing

Sources:
* https://dashbit.co/blog/tests-with-warnings-as-errors
* https://hexdocs.pm/mix/master/Mix.Tasks.Test.html

.github/workflows/builds.hex.pm.yml

@@ -0,0 +1,87 @@
+name: builds.hex.pm
+
+on:
+  push:
+    branches:
+      - main
+      - v*.*
+    tags:
+      - v*
+
+env:
+  ELIXIR_OPTS: "--warnings-as-errors"
+  ERLC_OPTS: "warnings_as_errors"
+  LANG: C.UTF-8
+
+concurrency: builds_txt
+
+jobs:
+  release_pre_built:
+    strategy:
+      fail-fast: true
+      max-parallel: 1
+      matrix:
+        include:
+          - otp: 23
+            otp_version: '23.3'
+            build_docs: build_docs
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 50
+      - name: Get tags
+        run: git fetch --tags origin
+      - uses: ./.github/workflows/release_pre_built
+        with:
+          otp_version: ${{ matrix.otp_version }}
+          otp: ${{ matrix.otp }}
+          build_docs: ${{ matrix.build_docs }}
+      - name: Utils.sh
+        run: |
+          cat << 'EOF' > utils.sh
+          function purge_key() {
+            curl \
+                -X POST \
+                -H "Fastly-Key: ${FASTLY_KEY}" \
+                -H "Accept: application/json" \
+                -H "Content-Length: 0" \
+                "https://api.fastly.com/service/$1/purge/$2"
+          }
+          function purge() {
+            purge_key ${FASTLY_REPO_SERVICE_ID} $1
+            purge_key ${FASTLY_BUILDS_SERVICE_ID} $1
+            sleep 2
+            purge_key ${FASTLY_REPO_SERVICE_ID} $1
+            purge_key ${FASTLY_BUILDS_SERVICE_ID} $1
+            sleep 2
+            purge_key ${FASTLY_REPO_SERVICE_ID} $1
+            purge_key ${FASTLY_BUILDS_SERVICE_ID} $1
+          }
+          EOF
+          chmod +x utils.sh
+      - name: Upload Docs to S3
+        if: ${{ matrix.build_docs }}
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.HEX_AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.HEX_AWS_SECRET_ACCESS_KEY }}
+          AWS_REGION: ${{ secrets.HEX_AWS_REGION }}
+          AWS_S3_BUCKET: ${{ secrets.HEX_AWS_S3_BUCKET }}
+          FASTLY_REPO_SERVICE_ID: ${{ secrets.HEX_FASTLY_REPO_SERVICE_ID }}
+          FASTLY_BUILDS_SERVICE_ID: ${{ secrets.HEX_FASTLY_BUILDS_SERVICE_ID }}
+          FASTLY_KEY: ${{ secrets.HEX_FASTLY_KEY }}
+        run: |
+          source utils.sh
+          version=$(echo ${{ github.ref_name }} | sed -e 's/^v//g')
+          for f in doc/*; do
+              if [ -d "$f" ]; then
+                  app=`echo $f | sed s/"doc\/"//`
+                  tarball="${app}-${version}.tar.gz"
+                  surrogate_key="docs/${app}-${version}"
+                  tar -czf "${tarball}" -C "doc/${app}" .
+                  aws s3 cp "${tarball}" "s3://${{ env.AWS_S3_BUCKET }}/docs/${tarball}" \
+                      --cache-control "public,max-age=3600" \
+                      --metadata "{\"surrogate-key\":\"${surrogate_key}\",\"surrogate-control\":\"public,max-age=604800\"}"
+                  purge "${surrogate_key}"
+              fi
+          done

.github/workflows/release_pre_built/action.yml

@@ -0,0 +1,51 @@
+name: "Release pre built"
+description: "Builds elixir release, ExDoc and generates docs"
+inputs:
+  otp:
+    description: "The major OTP version"
+  otp_version:
+    description: "The exact OTP version (major.minor[.patch])"
+  build_docs:
+    description: "If docs have to be built or not"
+runs:
+  using: "composite"
+  steps:
+    - uses: erlef/setup-beam@v1
+      with:
+        otp-version: ${{ inputs.otp_version }}
+        version-type: strict
+    - name: Build Elixir Release
+      shell: bash
+      run: |
+        make Precompiled.zip
+        mv Precompiled.zip elixir-otp-${{ inputs.otp }}.zip
+        shasum -a 1 elixir-otp-${{ inputs.otp }}.zip > elixir-otp-${{ inputs.otp }}.zip.sha1sum
+        shasum -a 256 elixir-otp-${{ inputs.otp }}.zip > elixir-otp-${{ inputs.otp }}.zip.sha256sum
+        echo "$PWD/bin" >> $GITHUB_PATH
+    - name: Get latest stable ExDoc version
+      if: ${{ inputs.build_docs }}
+      shell: bash
+      run: |
+        EX_DOC_LATEST_STABLE_VERSION=$(curl -s https://hex.pm/api/packages/ex_doc | jq --raw-output '.latest_stable_version')
+        echo "EX_DOC_LATEST_STABLE_VERSION=${EX_DOC_LATEST_STABLE_VERSION}" >> $GITHUB_ENV
+    - uses: actions/checkout@v3
+      if: ${{ inputs.build_docs }}
+      with:
+        repository: elixir-lang/ex_doc
+        ref: v${{ env.EX_DOC_LATEST_STABLE_VERSION }}
+        path: ex_doc
+    - name: Build ex_doc
+      if: ${{ inputs.build_docs }}
+      shell: bash
+      run: |
+        mv ex_doc ../ex_doc
+        cd ../ex_doc
+        ../elixir/bin/mix do local.rebar --force, local.hex --force, deps.get, compile
+        cd ../elixir
+    - name: Build Docs
+      if: ${{ inputs.build_docs }}
+      shell: bash
+      run: |
+        make Docs.zip
+        shasum -a 1 Docs.zip > Docs.zip.sha1sum
+        shasum -a 256 Docs.zip > Docs.zip.sha256sum

CHANGELOG.md

@@ -90,6 +90,24 @@ As of Elixir v1.12, implicitly decreasing ranges are soft-deprecated and warning
 
 Elixir v1.12 has the additional of many functions across the standard library. The `Enum` module received additions such as `Enum.count_until/2`, `Enum.product/1`, `Enum.zip_with/2`, and more. The `Integer` module now includes `Integer.pow/2` and `Integer.extended_gcd/2`. Finally, the `Kernel` module got two new functions, `Kernel.then/2` and `Kernel.tap/2`, which are specially useful in `|>` pipelines.
 
+## v1.12.3 (2021-09-05)
+
+### 1. Bug fixes
+
+#### Elixir
+
+  * [Code] Make sure that bindings in the default context returned by `Code.eval_*` functions are not returned as tagged tuples
+  * [Kernel] Do not crash when handling ambiguity errors
+  * [Range] Still match on old range patterns throughout the stdlib
+
+#### IEx
+
+  * [IEx.Autocomplete] Do not error autocompletion with module attribute
+
+#### Mix
+
+  * [Mix] Rename inconsistent `:exit_code` option to `:exit_status` on `Mix.raise/2`
+
 ## v1.12.2 (2021-07-01)
 
 ### 1. Bug fixes
@@ -209,6 +227,7 @@ Elixir v1.12 has the additional of many functions across the standard library. T
   * [mix release] Add `RELEASE_PROG` to releases with the name of the executable starting the release
   * [mix release] Support `remote.vm.args` to customize how the connecting VM boots
   * [mix test] Run all available tests if there are no pending `--failed` tests. This provides a better workflow as you no longer need to toggle the `--failed` flag between runs
+  * [mix test] Support `mix test --warnings-as-errors`, treating warnings as errors and returning a non-zero exit status (only applies to test files, not compilation)
 
 ### 2. Bug fixes
 
@@ -277,6 +296,14 @@ Elixir v1.12 has the additional of many functions across the standard library. T
 
   * [mix compile] The `:xref` compiler is deprecated and it has no effect. Please remove it from your mix.exs file.
 
+### 5. Backwards incompatible changes
+
+A backward incompatible change was found on Elixir v1.12.0 after the release. This was not planned and it is documented below:
+
+#### ExUnit
+
+  * [ExUnit.Formatter] `{:suite_finished, load_time, run_time}` message has been updated to `{:suite_finished, %{load: load_time, run: run_time, async: async_time}}`
+
 ## v1.11
 
 The CHANGELOG for v1.11 releases can be found [in the v1.11 branch](https://github.com/elixir-lang/elixir/blob/v1.11/CHANGELOG.md).

Makefile

@@ -179,40 +179,48 @@ clean_residual_files:
 
 LOGO_PATH = $(shell test -f ../docs/logo.png && echo "--logo ../docs/logo.png")
 SOURCE_REF = $(shell tag="$(call GIT_TAG)" revision="$(call GIT_REVISION)"; echo "$${tag:-$$revision}")
+
 DOCS_FORMAT = html
-COMPILE_DOCS = CANONICAL=$(CANONICAL) bin/elixir ../ex_doc/bin/ex_doc "$(1)" "$(VERSION)" "lib/$(2)/ebin" --main "$(3)" --source-url "https://github.com/elixir-lang/elixir" --source-ref "$(call SOURCE_REF)" $(call LOGO_PATH) --output doc/$(2) --canonical "https://hexdocs.pm/$(2)/$(CANONICAL)" --homepage-url "https://elixir-lang.org/docs.html" --formatter "$(DOCS_FORMAT)" $(4)
+DOCS_COMPILE = CANONICAL=$(CANONICAL) bin/elixir ../ex_doc/bin/ex_doc "$(1)" "$(VERSION)" "lib/$(2)/ebin" --main "$(3)" --source-url "https://github.com/elixir-lang/elixir" --source-ref "$(call SOURCE_REF)" $(call LOGO_PATH) --output doc/$(2) --canonical "https://hexdocs.pm/$(2)/$(CANONICAL)" --homepage-url "https://elixir-lang.org/docs.html" --formatter "$(DOCS_FORMAT)" $(4)
+DOCS_CONFIG = bin/elixir lib/elixir/scripts/docs_config.exs "$(1)"
 
 docs: compile ../ex_doc/bin/ex_doc docs_elixir docs_eex docs_mix docs_iex docs_ex_unit docs_logger
 
 docs_elixir: compile ../ex_doc/bin/ex_doc
 	@ echo "==> ex_doc (elixir)"
 	$(Q) rm -rf doc/elixir
-	$(call COMPILE_DOCS,Elixir,elixir,Kernel,--config "lib/elixir/docs.exs")
+	$(call DOCS_COMPILE,Elixir,elixir,Kernel,--config "lib/elixir/scripts/elixir_docs.exs")
+	$(call DOCS_CONFIG,elixir)
 
 docs_eex: compile ../ex_doc/bin/ex_doc
 	@ echo "==> ex_doc (eex)"
 	$(Q) rm -rf doc/eex
-	$(call COMPILE_DOCS,EEx,eex,EEx,--config "lib/mix/docs.exs")
+	$(call DOCS_COMPILE,EEx,eex,EEx,--config "lib/elixir/scripts/mix_docs.exs")
+	$(call DOCS_CONFIG,eex)
 
 docs_mix: compile ../ex_doc/bin/ex_doc
 	@ echo "==> ex_doc (mix)"
 	$(Q) rm -rf doc/mix
-	$(call COMPILE_DOCS,Mix,mix,Mix,--config "lib/mix/docs.exs")
+	$(call DOCS_COMPILE,Mix,mix,Mix,--config "lib/elixir/scripts/mix_docs.exs")
+	$(call DOCS_CONFIG,mix)
 
 docs_iex: compile ../ex_doc/bin/ex_doc
 	@ echo "==> ex_doc (iex)"
 	$(Q) rm -rf doc/iex
-	$(call COMPILE_DOCS,IEx,iex,IEx,--config "lib/mix/docs.exs")
+	$(call DOCS_COMPILE,IEx,iex,IEx,--config "lib/elixir/scripts/mix_docs.exs")
+	$(call DOCS_CONFIG,iex)
 
 docs_ex_unit: compile ../ex_doc/bin/ex_doc
 	@ echo "==> ex_doc (ex_unit)"
 	$(Q) rm -rf doc/ex_unit
-	$(call COMPILE_DOCS,ExUnit,ex_unit,ExUnit,--config "lib/mix/docs.exs")
+	$(call DOCS_COMPILE,ExUnit,ex_unit,ExUnit,--config "lib/elixir/scripts/mix_docs.exs")
+	$(call DOCS_CONFIG,ex_unit)
 
 docs_logger: compile ../ex_doc/bin/ex_doc
 	@ echo "==> ex_doc (logger)"
 	$(Q) rm -rf doc/logger
-	$(call COMPILE_DOCS,Logger,logger,Logger,--config "lib/mix/docs.exs")
+	$(call DOCS_COMPILE,Logger,logger,Logger,--config "lib/elixir/scripts/mix_docs.exs")
+	$(call DOCS_CONFIG,logger)
 
 ../ex_doc/bin/ex_doc:
 	@ echo "ex_doc is not found in ../ex_doc as expected. See README for more information."
@@ -221,23 +229,23 @@ docs_logger: compile ../ex_doc/bin/ex_doc
 #==> Zip tasks
 
 Docs.zip: docs
-	rm -f Docs-v$(VERSION).zip
-	zip -9 -r Docs-v$(VERSION).zip CHANGELOG.md doc NOTICE LICENSE README.md
-	@ echo "Docs file created $(CURDIR)/Docs-v$(VERSION).zip"
+	rm -f Docs.zip
+	zip -9 -r Docs.zip CHANGELOG.md doc NOTICE LICENSE README.md
+	@ echo "Docs file created $(CURDIR)/Docs.zip"
 
 Precompiled.zip: build_man compile
-	rm -f Precompiled-v$(VERSION).zip
-	zip -9 -r Precompiled-v$(VERSION).zip bin CHANGELOG.md lib/*/ebin lib/*/lib LICENSE man NOTICE README.md VERSION
-	@ echo "Precompiled file created $(CURDIR)/Precompiled-v$(VERSION).zip"
+	rm -f Precompiled.zip
+	zip -9 -r Precompiled.zip bin CHANGELOG.md lib/*/ebin lib/*/lib LICENSE man NOTICE README.md VERSION
+	@ echo "Precompiled file created $(CURDIR)/Precompiled.zip"
 
 zips: Precompiled.zip Docs.zip
 	@ echo ""
 	@ echo "### Checksums"
 	@ echo ""
-	@ shasum -a 1 < Precompiled-v$(VERSION).zip | sed -e "s/-//" | xargs echo "  * Precompiled.zip SHA1:"
-	@ shasum -a 512 < Precompiled-v$(VERSION).zip | sed -e "s/-//" | xargs echo "  * Precompiled.zip SHA512:"
-	@ shasum -a 1 < Docs-v$(VERSION).zip | sed -e "s/-//" | xargs echo "  * Docs.zip SHA1:"
-	@ shasum -a 512 < Docs-v$(VERSION).zip | sed -e "s/-//" | xargs echo "  * Docs.zip SHA512:"
+	@ shasum -a 1 < Precompiled.zip | sed -e "s/-//" | xargs echo "  * Precompiled.zip SHA1:"
+	@ shasum -a 512 < Precompiled.zip | sed -e "s/-//" | xargs echo "  * Precompiled.zip SHA512:"
+	@ shasum -a 1 < Docs.zip | sed -e "s/-//" | xargs echo "  * Docs.zip SHA1:"
+	@ shasum -a 512 < Docs.zip | sed -e "s/-//" | xargs echo "  * Docs.zip SHA512:"
 	@ echo ""
 
 #==> Test tasks

VERSION

@@ -1 +1 @@
-1.12.2
+1.12.3

bin/elixirc

@@ -14,7 +14,7 @@ Usage: $(basename "$0") [elixir switches] [compiler switches] [.ex files]
   --no-docs                 Does not attach documentation to compiled modules
   --profile time            Profile the time to compile modules
   --verbose                 Prints compilation status
-  --warnings-as-errors      Treats warnings as errors and return non-zero exit code
+  --warnings-as-errors      Treats warnings as errors and return non-zero exit status
 
 Options given after -- are passed down to the executed code.
 Options can be passed to the Erlang runtime using \$ELIXIR_ERL_OPTIONS.

bin/elixirc.bat

@@ -23,7 +23,7 @@ echo   --no-debug-info           Does not attach debug info to compiled modules
 echo   --no-docs                 Does not attach documentation to compiled modules
 echo   --profile time            Profile the time to compile modules
 echo   --verbose                 Prints compilation status
-echo   --warnings-as-errors      Treats warnings as errors and returns non-zero exit code
+echo   --warnings-as-errors      Treats warnings as errors and returns non-zero exit status
 echo.
 echo ** Options given after -- are passed down to the executed code
 echo ** Options can be passed to the Erlang runtime using ELIXIR_ERL_OPTIONS

lib/elixir/lib/calendar/date_range.ex

@@ -26,13 +26,15 @@ defmodule Date.Range do
   defstruct [:first, :last, :first_in_iso_days, :last_in_iso_days, :step]
 
   defimpl Enumerable do
-    def member?(%{first: %{calendar: calendar}} = range, %Date{calendar: calendar} = date) do
-      %{
-        first_in_iso_days: first_days,
-        last_in_iso_days: last_days,
-        step: step
-      } = range
-
+    def member?(
+          %Date.Range{
+            first: %{calendar: calendar},
+            first_in_iso_days: first_days,
+            last_in_iso_days: last_days,
+            step: step
+          } = range,
+          %Date{calendar: calendar} = date
+        ) do
       {days, _} = Date.to_iso_days(date)
 
       cond do
@@ -47,24 +49,43 @@ defmodule Date.Range do
       end
     end
 
-    def member?(_, _) do
+    def member?(%Date.Range{step: _}, _) do
       {:ok, false}
     end
 
+    # TODO: Remove me on v2.0
+    def member?(
+          %{__struct__: Date.Range, first_in_iso_days: first_days, last_in_iso_days: last_days} =
+            date_range,
+          date
+        ) do
+      step = if first_days <= last_days, do: 1, else: -1
+      member?(Map.put(date_range, :step, step), date)
+    end
+
     def count(range) do
       {:ok, size(range)}
     end
 
-    def slice(range) do
-      %{
-        first_in_iso_days: first,
-        first: %{calendar: calendar},
-        step: step
-      } = range
-
+    def slice(
+          %Date.Range{
+            first_in_iso_days: first,
+            first: %{calendar: calendar},
+            step: step
+          } = range
+        ) do
       {:ok, size(range), &slice(first + &1 * step, step, &2, calendar)}
     end
 
+    # TODO: Remove me on v2.0
+    def slice(
+          %{__struct__: Date.Range, first_in_iso_days: first_days, last_in_iso_days: last_days} =
+            date_range
+        ) do
+      step = if first_days <= last_days, do: 1, else: -1
+      slice(Map.put(date_range, :step, step))
+    end
+
     defp slice(current, _step, 1, calendar) do
       [date_from_iso_days(current, calendar)]
     end
@@ -76,17 +97,30 @@ defmodule Date.Range do
       ]
     end
 
-    def reduce(range, acc, fun) do
-      %{
-        first_in_iso_days: first_days,
-        last_in_iso_days: last_days,
-        first: %{calendar: calendar},
-        step: step
-      } = range
-
+    def reduce(
+          %Date.Range{
+            first_in_iso_days: first_days,
+            last_in_iso_days: last_days,
+            first: %{calendar: calendar},
+            step: step
+          },
+          acc,
+          fun
+        ) do
       reduce(first_days, last_days, acc, fun, step, calendar)
     end
 
+    # TODO: Remove me on v2.0
+    def reduce(
+          %{__struct__: Date.Range, first_in_iso_days: first_days, last_in_iso_days: last_days} =
+            date_range,
+          acc,
+          fun
+        ) do
+      step = if first_days <= last_days, do: 1, else: -1
+      reduce(Map.put(date_range, :step, step), acc, fun)
+    end
+
     defp reduce(_first_days, _last_days, {:halt, acc}, _fun, _step, _calendar) do
       {:halted, acc}
     end
@@ -135,6 +169,15 @@ defmodule Date.Range do
     defp size(%Date.Range{first_in_iso_days: first_days, last_in_iso_days: last_days, step: step}),
       do: abs(div(last_days - first_days, step)) + 1
 
+    # TODO: Remove me on v2.0
+    defp size(
+           %{__struct__: Date.Range, first_in_iso_days: first_days, last_in_iso_days: last_days} =
+             date_range
+         ) do
+      step = if first_days <= last_days, do: 1, else: -1
+      size(Map.put(date_range, :step, step))
+    end
+
     defp empty?(%Date.Range{
            first_in_iso_days: first_days,
            last_in_iso_days: last_days,
@@ -151,10 +194,21 @@ defmodule Date.Range do
          when step < 0 and first_days < last_days,
          do: true
 
-    defp empty?(%Date.Range{}), do: false
+    defp empty?(%Date.Range{step: _}), do: false
+
+    # TODO: Remove me on v2.0
+    defp empty?(
+           %{__struct__: Date.Range, first_in_iso_days: first_days, last_in_iso_days: last_days} =
+             date_range
+         ) do
+      step = if first_days <= last_days, do: 1, else: -1
+      empty?(Map.put(date_range, :step, step))
+    end
   end
 
   defimpl Inspect do
+    import Kernel, except: [inspect: 2]
+
     def inspect(%Date.Range{first: first, last: last, step: 1}, _) do
       "#DateRange<" <> inspect(first) <> ", " <> inspect(last) <> ">"
     end
@@ -162,5 +216,11 @@ defmodule Date.Range do
     def inspect(%Date.Range{first: first, last: last, step: step}, _) do
       "#DateRange<" <> inspect(first) <> ", " <> inspect(last) <> ", #{step}>"
     end
+
+    # TODO: Remove me on v2.0
+    def inspect(%{__struct__: Date.Range, first: first, last: last} = date_range, opts) do
+      step = if first <= last, do: 1, else: -1
+      inspect(Map.put(date_range, :step, step), opts)
+    end
   end
 end

lib/elixir/lib/code.ex

@@ -38,8 +38,8 @@ defmodule Code do
   are loaded as needed. In embedded mode the opposite happens, as all
   modules need to be loaded upfront or explicitly.
 
-  You can use `ensure_loaded/1` (as well as `ensure_lodead?/1` and
-  `ensure_lodead!/1`) to check if a module is loaded before using it and
+  You can use `ensure_loaded/1` (as well as `ensure_loaded?/1` and
+  `ensure_loaded!/1`) to check if a module is loaded before using it and
   act.
 
   ## `ensure_compiled/1` and `ensure_compiled!/1`

lib/elixir/lib/enum.ex

@@ -2661,6 +2661,12 @@ defmodule Enum do
     end
   end
 
+  # TODO: Remove me on v2.0
+  def slice(enumerable, %{__struct__: Range, first: first, last: last} = index_range) do
+    step = if first <= last, do: 1, else: -1
+    slice(enumerable, Map.put(index_range, :step, step))
+  end
+
   defp slice_range(enumerable, first, last) when last >= first and last >= 0 and first >= 0 do
     slice_any(enumerable, first, last - first + 1)
   end

lib/elixir/lib/range.ex

@@ -185,6 +185,12 @@ defmodule Range do
   def size(first..last//step) when step < 0 and first < last, do: 0
   def size(first..last//step), do: abs(div(last - first, step)) + 1
 
+  # TODO: Remove me on v2.0
+  def size(%{__struct__: Range, first: first, last: last} = range) do
+    step = if first <= last, do: 1, else: -1
+    size(Map.put(range, :step, step))
+  end
+
   @doc """
   Checks if two ranges are disjoint.
 
@@ -273,6 +279,12 @@ defimpl Enumerable, for: Range do
     reduce(first, last, acc, fun, step)
   end
 
+  # TODO: Remove me on v2.0
+  def reduce(%{__struct__: Range, first: first, last: last} = range, acc, fun) do
+    step = if first <= last, do: 1, else: -1
+    reduce(Map.put(range, :step, step), acc, fun)
+  end
+
   defp reduce(_first, _last, {:halt, acc}, _fun, _step) do
     {:halted, acc}
   end
@@ -304,6 +316,13 @@ defimpl Enumerable, for: Range do
     end
   end
 
+  # TODO: Remove me on v2.0
+  def member?(%{__struct__: Range, first: first, last: last} = range, value)
+      when is_integer(value) do
+    step = if first <= last, do: 1, else: -1
+    member?(Map.put(range, :step, step), value)
+  end
+
   def member?(_, _value) do
     {:ok, false}
   end
@@ -316,12 +335,19 @@ defimpl Enumerable, for: Range do
     {:ok, Range.size(range), &slice(first + &1 * step, step, &2)}
   end
 
+  # TODO: Remove me on v2.0
+  def slice(%{__struct__: Range, first: first, last: last} = range) do
+    step = if first <= last, do: 1, else: -1
+    slice(Map.put(range, :step, step))
+  end
+
   defp slice(current, _step, 1), do: [current]
   defp slice(current, step, remaining), do: [current | slice(current + step, step, remaining - 1)]
 end
 
 defimpl Inspect, for: Range do
   import Inspect.Algebra
+  import Kernel, except: [inspect: 2]
 
   def inspect(first..last//1, opts) do
     concat([to_doc(first, opts), "..", to_doc(last, opts)])
@@ -330,4 +356,10 @@ defimpl Inspect, for: Range do
   def inspect(first..last//step, opts) do
     concat([to_doc(first, opts), "..", to_doc(last, opts), "//", to_doc(step, opts)])
   end
+
+  # TODO: Remove me on v2.0
+  def inspect(%{__struct__: Range, first: first, last: last} = range, opts) do
+    step = if first <= last, do: 1, else: -1
+    inspect(Map.put(range, :step, step), opts)
+  end
 end

lib/elixir/lib/string.ex

@@ -2098,6 +2098,12 @@ defmodule String do
     end
   end
 
+  # TODO: Remove me on v2.0
+  def slice(string, %{__struct__: Range, first: first, last: last} = range) do
+    step = if first <= last, do: 1, else: -1
+    slice(string, Map.put(range, :step, step))
+  end
+
   defp slice_range("", _, _), do: ""
 
   defp slice_range(string, first, -1) when first >= 0 do

lib/elixir/scripts/docs_config.exs

@@ -0,0 +1,19 @@
+# Generate docs_config.js for version chooser in ExDoc
+[app] = System.argv()
+
+{text_tags, 0} = System.cmd("git", ["tag"])
+skipped = Version.parse!("1.0.3")
+
+list_contents =
+  text_tags
+  |> String.split()
+  |> Enum.map(fn "v" <> rest -> Version.parse!(rest) end)
+  |> Enum.filter(&(Version.compare(&1, skipped) == :gt))
+  |> Enum.sort({:desc, Version})
+  |> Enum.map_intersperse(", ", fn version ->
+    version_string = to_string(version)
+    ~s[{"version":"v#{version_string}", "url":"https://hexdocs.pm/#{app}/#{version_string}"}]
+  end)
+
+File.mkdir_p!("doc/#{app}")
+File.write!("doc/#{app}/docs_config.js", ["var versionNodes = [", list_contents, "];\n"])

lib/elixir/src/elixir.erl

@@ -252,7 +252,7 @@ eval_forms(Tree, RawBinding, OE) ->
 
   case Erl of
     {atom, _, Atom} ->
-      {Atom, Binding, NewE};
+      {Atom, RawBinding, NewE};
 
     _  ->
       Exprs =

lib/elixir/src/elixir_expand.erl

@@ -1161,23 +1161,19 @@ format_error({invalid_alias, Expr}) ->
     "it at runtime. If instead you wanted to invoke a function or access a field, "
     "wrap the function or field name in double quotes",
   io_lib:format(Message, ['Elixir.Macro':to_string(Expr)]);
-format_error({op_ambiguity, Name, {Op, _, [Arg]}}) ->
+format_error({op_ambiguity, Name, Arg}) ->
   NameString = atom_to_binary(Name, utf8),
-  OpString = atom_to_binary(Op, utf8),
   ArgString = 'Elixir.Macro':to_string(Arg),
 
   Message =
-    "\"~ts ~ts~ts\" looks like a function call but there is a variable named \"~ts\".\n"
+    "\"~ts ~ts\" looks like a function call but there is a variable named \"~ts\". "
     "If you want to perform a function call, use parentheses:\n"
     "\n"
-    "    ~ts(~ts~ts)\n"
+    "    ~ts(~ts)\n"
     "\n"
-    "If you want to perform an operation on the variable ~ts, use even spaces instead:\n"
-    "\n"
-    "    ~ts ~ts ~ts",
-  io_lib:format(Message, [NameString, OpString, ArgString, NameString,
-                          NameString, OpString, ArgString, NameString,
-                          NameString, OpString, ArgString]);
+    "If you want to perform an operation on the variable ~ts, use spaces "
+    "around the unary operator",
+  io_lib:format(Message, [NameString, ArgString, NameString, NameString, ArgString, NameString]);
 format_error({invalid_clauses, Name}) ->
   Message =
     "the function \"~ts\" cannot handle clauses with the -> operator because it is not a macro. "

lib/elixir/test/elixir/calendar/date_range_test.exs

@@ -141,4 +141,71 @@ defmodule Date.RangeTest do
       Date.range(~D[2000-01-01], ~D[2000-01-31], step)
     end
   end
+
+  describe "old date ranges" do
+    test "inspect" do
+      asc = %{
+        __struct__: Date.Range,
+        first: ~D[2021-07-14],
+        first_in_iso_days: 738_350,
+        last: ~D[2021-07-17],
+        last_in_iso_days: 738_353
+      }
+
+      desc = %{
+        __struct__: Date.Range,
+        first: ~D[2021-07-17],
+        first_in_iso_days: 738_353,
+        last: ~D[2021-07-14],
+        last_in_iso_days: 738_350
+      }
+
+      assert inspect(asc) == "#DateRange<~D[2021-07-14], ~D[2021-07-17]>"
+      assert inspect(desc) == "#DateRange<~D[2021-07-17], ~D[2021-07-14], -1>"
+    end
+
+    test "enumerable" do
+      asc = %{
+        __struct__: Date.Range,
+        first: ~D[2021-07-14],
+        first_in_iso_days: 738_350,
+        last: ~D[2021-07-17],
+        last_in_iso_days: 738_353
+      }
+
+      desc = %{
+        __struct__: Date.Range,
+        first: ~D[2021-07-17],
+        first_in_iso_days: 738_353,
+        last: ~D[2021-07-14],
+        last_in_iso_days: 738_350
+      }
+
+      # member? implementations tests also empty?
+      assert Enumerable.member?(asc, ~D[2021-07-15])
+      assert {:ok, 4, _} = Enumerable.slice(asc)
+
+      assert Enum.reduce(asc, [], fn x, acc -> [x | acc] end) == [
+               ~D[2021-07-17],
+               ~D[2021-07-16],
+               ~D[2021-07-15],
+               ~D[2021-07-14]
+             ]
+
+      assert Enum.count(asc) == 4
+
+      # member? implementations tests also empty?
+      assert Enumerable.member?(desc, ~D[2021-07-15])
+      assert {:ok, 4, _} = Enumerable.slice(desc)
+
+      assert Enum.reduce(desc, [], fn x, acc -> [x | acc] end) == [
+               ~D[2021-07-14],
+               ~D[2021-07-15],
+               ~D[2021-07-16],
+               ~D[2021-07-17]
+             ]
+
+      assert Enum.count(desc) == 4
+    end
+  end
 end

lib/elixir/test/elixir/code_test.exs

@@ -167,6 +167,10 @@ defmodule CodeTest do
       assert Code.eval_string("two = 1 + 1") == {2, [two: 2]}
     end
 
+    test "keeps bindings on optimized evals" do
+      assert Code.eval_string("import Enum", x: 1) == {Enum, [x: 1]}
+    end
+
     test "supports a %Macro.Env{} struct as the third argument" do
       assert {3, _} = Code.eval_string("a + b", [a: 1, b: 2], __ENV__)
     end

lib/elixir/test/elixir/exception_test.exs

@@ -470,11 +470,12 @@ defmodule ExceptionTest do
                    * min/1
              """
 
-      assert blame_message(:erlang, & &1.gt_cookie()) == """
-             function :erlang.gt_cookie/0 is undefined or private. Did you mean one of:
+      assert blame_message(:erlang, & &1.hal()) == """
+             function :erlang.hal/0 is undefined or private. Did you mean one of:
 
-                   * get_cookie/0
-                   * set_cookie/2
+                   * halt/0
+                   * halt/1
+                   * halt/2
              """
     end
 

lib/elixir/test/elixir/kernel/expansion_test.exs

@@ -2538,10 +2538,10 @@ defmodule Kernel.ExpansionTest do
 
   describe "op ambiguity" do
     test "raises when a call is ambiguous" do
+      # We use string_to_quoted! here to avoid the formatter adding parentheses
       message = ~r["a -1" looks like a function call but there is a variable named "a"]
 
       assert_raise CompileError, message, fn ->
-        # We use string_to_quoted! here to avoid the formatter adding parentheses to "a -1".
         code =
           Code.string_to_quoted!("""
           a = 1
@@ -2550,6 +2550,18 @@ defmodule Kernel.ExpansionTest do
 
         expand(code)
       end
+
+      message = ~r["a -1\.\.a \+ 1" looks like a function call but there is a variable named "a"]
+
+      assert_raise CompileError, message, fn ->
+        code =
+          Code.string_to_quoted!("""
+          a = 1
+          a -1 .. a + 1
+          """)
+
+        expand(code)
+      end
     end
   end
 

lib/elixir/test/elixir/range_test.exs

@@ -94,4 +94,49 @@ defmodule RangeTest do
       assert Range.disjoint?(1..1, 1..1) == false
     end
   end
+
+  describe "old ranges" do
+    test "inspect" do
+      asc = %{__struct__: Range, first: 1, last: 3}
+      desc = %{__struct__: Range, first: 3, last: 1}
+
+      assert inspect(asc) == "1..3"
+      assert inspect(desc) == "3..1//-1"
+    end
+
+    test "enum" do
+      asc = %{__struct__: Range, first: 1, last: 3}
+      desc = %{__struct__: Range, first: 3, last: 1}
+
+      assert Enum.to_list(asc) == [1, 2, 3]
+      assert Enum.member?(asc, 2)
+      assert Enum.count(asc) == 3
+      assert Enum.drop(asc, 1) == [2, 3]
+      assert Enum.slice([1, 2, 3, 4, 5, 6], asc) == [2, 3, 4]
+      # testing private Enum.aggregate
+      assert Enum.max(asc) == 3
+      assert Enum.sum(asc) == 6
+      assert Enum.min_max(asc) == {1, 3}
+      assert Enum.reduce(asc, 0, fn a, b -> a + b end) == 6
+
+      assert Enum.to_list(desc) == [3, 2, 1]
+      assert Enum.member?(desc, 2)
+      assert Enum.count(desc) == 3
+      assert Enum.drop(desc, 1) == [2, 1]
+      assert Enum.slice([1, 2, 3, 4, 5, 6], desc) == []
+      # testing private Enum.aggregate
+      assert Enum.max(desc) == 3
+      assert Enum.sum(desc) == 6
+      assert Enum.min_max(desc) == {1, 3}
+      assert Enum.reduce(desc, 0, fn a, b -> a + b end) == 6
+    end
+
+    test "string" do
+      asc = %{__struct__: Range, first: 1, last: 3}
+      desc = %{__struct__: Range, first: 3, last: 1}
+
+      assert String.slice("elixir", asc) == "lix"
+      assert String.slice("elixir", desc) == ""
+    end
+  end
 end

lib/iex/lib/iex/autocomplete.ex

@@ -163,6 +163,10 @@ defmodule IEx.Autocomplete do
     {:ok, List.to_atom(var)}
   end
 
+  defp expand_dot_path({:module_attribute, _}, _shell) do
+    :error
+  end
+
   defp expand_dot_path({:dot, parent, call}, shell) do
     case expand_dot_path(parent, shell) do
       {:ok, %{} = map} -> Map.fetch(map, List.to_atom(call))

lib/iex/test/iex/autocomplete_test.exs

@@ -161,6 +161,7 @@ defmodule IEx.AutocompleteTest do
     assert expand('Xyz') == {:no, '', []}
     assert expand('x.Foo') == {:no, '', []}
     assert expand('x.Foo.get_by') == {:no, '', []}
+    assert expand('@foo.bar') == {:no, '', []}
   end
 
   test "Elixir root submodule completion" do
@@ -221,21 +222,21 @@ defmodule IEx.AutocompleteTest do
     assert expand('map.f') == {:no, '', []}
   end
 
-  test "autocompletion off a bound variable only works for modules and maps" do
+  test "bound variables for modules and maps" do
     eval("num = 5; map = %{nested: %{num: 23}}")
     assert expand('num.print') == {:no, '', []}
     assert expand('map.nested.num.f') == {:no, '', []}
     assert expand('map.nested.num.key.f') == {:no, '', []}
   end
 
-  test "autocompletion using access syntax does is not supported" do
+  test "access syntax is not supported" do
     eval("map = %{nested: %{deeply: %{num: 23}}}")
     assert expand('map[:nested][:deeply].n') == {:no, '', []}
     assert expand('map[:nested].deeply.n') == {:no, '', []}
     assert expand('map.nested.[:deeply].n') == {:no, '', []}
   end
 
-  test "autocompletion off of unbound variables is not supported" do
+  test "unbound variables is not supported" do
     eval("num = 5")
     assert expand('other_var.f') == {:no, '', []}
     assert expand('a.b.c.d') == {:no, '', []}

lib/mix/lib/mix.ex

@@ -433,11 +433,11 @@ defmodule Mix do
   end
 
   @doc """
-  Raises a Mix error that is nicely formatted, defaulting to exit code `1`.
+  Raises a Mix error that is nicely formatted, defaulting to exit status `1`.
   """
   @spec raise(binary) :: no_return
   def raise(message) do
-    __MODULE__.raise(message, exit_code: 1)
+    __MODULE__.raise(message, exit_status: 1)
   end
 
   @doc """
@@ -445,13 +445,14 @@ defmodule Mix do
 
   ## Options
 
-    * `:exit_code` - defines exit code value, defaults to `1`
+    * `:exit_status` - defines exit status, defaults to `1`
 
   """
-  @doc since: "1.12.0"
-  @spec raise(binary, exit_code: non_neg_integer()) :: no_return
+  @doc since: "1.12.3"
+  @spec raise(binary, exit_status: non_neg_integer()) :: no_return
   def raise(message, opts) when is_binary(message) and is_list(opts) do
-    Kernel.raise(Mix.Error, mix: Keyword.get(opts, :exit_code, 1), message: message)
+    status = opts[:exit_status] || opts[:exit_code] || 1
+    Kernel.raise(Mix.Error, mix: status, message: message)
   end
 
   @doc """

lib/mix/lib/mix/tasks/compile.elixir.ex

@@ -52,7 +52,7 @@ defmodule Mix.Tasks.Compile.Elixir do
     * `--debug-info` (`--no-debug-info`) - attaches (or not) debug info to compiled modules
     * `--ignore-module-conflict` - does not emit warnings if a module was previously defined
     * `--warnings-as-errors` - treats warnings in the current project as errors and
-      return a non-zero exit code
+      return a non-zero exit status
     * `--long-compilation-threshold N` - sets the "long compilation" threshold
       (in seconds) to `N` (see the docs for `Kernel.ParallelCompiler.compile/2`)
     * `--profile` - if set to `time`, outputs timing information of compilation steps

lib/mix/lib/mix/tasks/test.ex

@@ -174,7 +174,7 @@ defmodule Mix.Tasks.Test do
       Note that in trace mode test timeouts will be ignored as timeout is set to `:infinity`
 
     * `--warnings-as-errors` - (since v1.12.0) treats warnings as errors and returns a non-zero
-      exit code. This option only applies to test files. To treat warnings as errors during
+      exit status. This option only applies to test files. To treat warnings as errors during
       compilation and during tests, run:
           MIX_ENV=test mix do compile --warnings-as-errors, test --warnings-as-errors
 

lib/mix/test/mix/cli_test.exs

@@ -20,7 +20,7 @@ defmodule Mix.CLITest do
   end
 
   @tag :unix
-  test "Mix.raise/2 can set exit code", %{tmp_dir: tmp_dir} do
+  test "Mix.raise/2 can set exit status", %{tmp_dir: tmp_dir} do
     File.cd!(tmp_dir, fn ->
       File.mkdir_p!("lib")
 
@@ -34,7 +34,7 @@ defmodule Mix.CLITest do
 
         defp aliases do
           [
-            custom: &error(&1, exit_code: 99),
+            custom: &error(&1, exit_status: 99),
           ]
         end