Merge branch '3.x' into 4.x

* 3.x:
  Bump version to 3.9.4-DEV
  Fix a warning
  Use ::class everywhere
  Auto-close PRs on subtree-splits
  Bump version
  Prepare the 3.9.3 release
  Update CHANGELOG
  Ensure Lexer:: is always initialized
  fix: #4033 add missing unwrap call when a TemplateWrapper instance can be present
  change extended DI extension class
  fix: #4029 when use_yield is true CaptureNode use iterator_to_array preserveKeys argument to false

.github/sync-packages.php

@@ -0,0 +1,71 @@
+<?php
+
+if ('cli' !== PHP_SAPI) {
+    echo "This script can only be run from the command line.\n";
+    exit(1);
+}
+
+$mainRepo = 'https://github.com/twigphp/Twig';
+exec('find extra/ -name composer.json', $packages);
+
+foreach ($packages as $package) {
+    $package = dirname($package);
+    $c = file_get_contents($package.'/.gitattributes');
+    $c = preg_replace('{^/\.git.*+\n}m', '', $c);
+    $c .= "/.git* export-ignore\n";
+    file_put_contents($package.'/.gitattributes', $c);
+
+
+    @mkdir($package.'/.github');
+    file_put_contents($package.'/.github/PULL_REQUEST_TEMPLATE.md', <<<EOTXT
+        Please do not submit any Pull Requests here. They will be closed.
+        ---
+
+        Please submit your PR here instead:
+        {$mainRepo}
+
+        This repository is what we call a "subtree split": a read-only subset of that main repository.
+        We're looking forward to your PR there!
+
+        EOTXT
+    );
+
+    @mkdir($package.'/.github/workflows');
+    file_put_contents($package.'/.github/workflows/check-subtree-split.yml', <<<EOTXT
+        name: Check subtree split
+        on:
+          pull_request_target:
+        jobs:
+          close-pull-request:
+            runs-on: ubuntu-latest
+            steps:
+            - name: Close pull request
+              uses: actions/github-script@v6
+              with:
+                script: |
+                  if (context.repo.owner === "twigphp") {
+                    github.rest.issues.createComment({
+                      owner: "twigphp",
+                      repo: context.repo.repo,
+                      issue_number: context.issue.number,
+                      body: `
+                  Thanks for your Pull Request! We love contributions.
+
+                  However, you should instead open your PR on the main repository:
+                  {$mainRepo}
+
+                  This repository is what we call a "subtree split": a read-only subset of that main repository.
+                  We're looking forward to your PR there!
+                  `
+                    });
+                    github.rest.pulls.update({
+                      owner: "twigphp",
+                      repo: context.repo.repo,
+                      pull_number: context.issue.number,
+                      state: "closed"
+                    });
+                  }
+
+        EOTXT
+    );
+}

.github/workflows/package-tests.yml

@@ -0,0 +1,26 @@
+name: Verify Packages
+
+on:
+  pull_request:
+    paths:
+      - extra/**
+
+permissions:
+  contents: read
+
+jobs:
+  verify:
+    name: Verify Packages
+    runs-on: Ubuntu-20.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Fetch branch from where the PR started
+        run: git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
+
+      - name: Verify subtree-splits are auto-closed
+        run: |
+          php .github/sync-packages.php
+          git add extra/
+          git diff --staged --exit-code || (echo '::error::Please run "php .github/sync-packages.php".' && exit 1)

extra/cache-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/cache-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!

extra/cache-extra/.github/workflows/check-subtree-split.yml

@@ -0,0 +1,33 @@
+name: Check subtree split
+on:
+  pull_request_target:
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "twigphp") {
+            github.rest.issues.createComment({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/twigphp/Twig
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+            github.rest.pulls.update({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }

extra/cssinliner-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/cssinliner-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!

extra/cssinliner-extra/.github/workflows/check-subtree-split.yml

@@ -0,0 +1,33 @@
+name: Check subtree split
+on:
+  pull_request_target:
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "twigphp") {
+            github.rest.issues.createComment({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/twigphp/Twig
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+            github.rest.pulls.update({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }

extra/html-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/html-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!

extra/html-extra/.github/workflows/check-subtree-split.yml

@@ -0,0 +1,33 @@
+name: Check subtree split
+on:
+  pull_request_target:
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "twigphp") {
+            github.rest.issues.createComment({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/twigphp/Twig
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+            github.rest.pulls.update({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }

extra/inky-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/inky-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!

extra/inky-extra/.github/workflows/check-subtree-split.yml

@@ -0,0 +1,33 @@
+name: Check subtree split
+on:
+  pull_request_target:
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "twigphp") {
+            github.rest.issues.createComment({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/twigphp/Twig
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+            github.rest.pulls.update({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }

extra/intl-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/intl-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!

extra/intl-extra/.github/workflows/check-subtree-split.yml

@@ -0,0 +1,33 @@
+name: Check subtree split
+on:
+  pull_request_target:
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "twigphp") {
+            github.rest.issues.createComment({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/twigphp/Twig
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+            github.rest.pulls.update({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }

extra/markdown-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/markdown-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!

extra/markdown-extra/.github/workflows/check-subtree-split.yml

@@ -0,0 +1,33 @@
+name: Check subtree split
+on:
+  pull_request_target:
+jobs:
+  close-pull-request:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Close pull request
+      uses: actions/github-script@v6
+      with:
+        script: |
+          if (context.repo.owner === "twigphp") {
+            github.rest.issues.createComment({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `
+          Thanks for your Pull Request! We love contributions.
+
+          However, you should instead open your PR on the main repository:
+          https://github.com/twigphp/Twig
+
+          This repository is what we call a "subtree split": a read-only subset of that main repository.
+          We're looking forward to your PR there!
+          `
+            });
+            github.rest.pulls.update({
+              owner: "twigphp",
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              state: "closed"
+            });
+          }

extra/string-extra/.gitattributes

@@ -1,2 +1,3 @@
 /Tests export-ignore
 /phpunit.xml.dist export-ignore
+/.git* export-ignore

extra/string-extra/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,8 @@
+Please do not submit any Pull Requests here. They will be closed.
+---
+
+Please submit your PR here instead:
+https://github.com/twigphp/Twig
+
+This repository is what we call a "subtree split": a read-only subset of that main repository.
+We're looking forward to your PR there!