style: enforce no_whitespace_in_blank_line

.github/workflows/lint-php-cs.yml

@@ -0,0 +1,48 @@
+# This workflow is provided via the organization template repository
+#
+# https://github.com/nextcloud/.github
+# https://docs.github.com/en/actions/learn-github-actions/sharing-workflows-with-your-organization
+#
+# SPDX-FileCopyrightText: 2021-2024 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: MIT
+
+name: Lint php-cs
+
+on: pull_request
+
+permissions:
+  contents: read
+
+concurrency:
+  group: lint-php-cs-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest-low
+
+    name: php-cs
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+
+      - name: Set up php8.3
+        uses: shivammathur/setup-php@0f7f1d08e3e32076e51cae65eb0b0c871405b16e # v2.34.1
+        with:
+          php-version: '8.3'
+          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, sqlite, pdo_sqlite
+          coverage: none
+          ini-file: development
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Install dependencies
+        run: |
+          composer i
+
+      - name: Lint
+        run: composer run cs:check || ( echo 'Please run `composer run cs:fix` to format your code' && exit 1 )

.github/workflows/lint-php.yml

@@ -0,0 +1,43 @@
+# This workflow is provided via the organization template repository
+#
+# https://github.com/nextcloud/.github
+# https://docs.github.com/en/actions/learn-github-actions/sharing-workflows-with-your-organization
+#
+# SPDX-FileCopyrightText: 2021-2024 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: MIT
+
+name: Lint php
+
+on: pull_request
+
+permissions:
+  contents: read
+
+concurrency:
+  group: lint-php-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  php-lint:
+    runs-on: ubuntu-latest-low
+
+    name: php-lint
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: Set up php 8.3
+        uses: shivammathur/setup-php@0f7f1d08e3e32076e51cae65eb0b0c871405b16e # v2.34.1
+        with:
+          php-version: '8.3'
+          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, sqlite, pdo_sqlite
+          coverage: none
+          ini-file: development
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Lint
+        run: composer run lint

CHANGELOG.md

@@ -1,6 +1,10 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## 1.3.3 — unreleased
+### Added
+* `no_whitespace_in_blank_line`: Remove trailing whitespace at the end of blank lines
+
 ## 1.3.2 - 2024-10-14
 ### Added
 * `type_declaration_spaces`: A single space between typehint and variable name

composer.json

@@ -21,5 +21,10 @@
         "psr-4": {
             "Nextcloud\\CodingStandard\\": "src"
         }
+    },
+    "scripts": {
+        "cs:check": "php-cs-fixer fix --dry-run --diff",
+        "cs:fix": "php-cs-fixer fix",
+        "lint": "find . -name \\*.php -not -path './vendor/*' -print0 | xargs -0 -n1 php -l"
     }
 }

src/Config.php

@@ -55,6 +55,7 @@ public function getRules() : array {
 			'no_trailing_whitespace' => true,
 			'no_trailing_whitespace_in_comment' => true,
 			'no_unused_imports' => true,
+			'no_whitespace_in_blank_line' => true,
 			'nullable_type_declaration_for_default_null_value' => true,
 			'nullable_type_declaration' => ['syntax' => 'question_mark'],
 			'operator_linebreak' => [