reuse: Add linting for old license comments

.pylintrc

@@ -76,7 +76,7 @@ class-const-naming-style = snake_case
 [FORMAT]
 # FIXME:v4 (lint) down to 88 again once we use black
 max-line-length=190
-ignore-long-lines=(<?https?://|file://|^# Copyright 201\d|link:)
+ignore-long-lines=(<?https?://|file://|link:)
 expected-line-ending-format=LF
 
 [VARIABLES]

scripts/dev/misc_checks.py

@@ -266,6 +266,14 @@ def check_spelling(args: argparse.Namespace) -> Optional[bool]:
             re.compile(r'pathlib\.Path\(tmpdir\)'),
             "use tmp_path instead",
         ),
+        (
+            re.compile(r' Copyright 2'),
+            "use 'SPDX-FileCopyrightText: ...' without year instead",
+        ),
+        (
+            re.compile(r'qutebrowser is free software: you can redistribute'),
+            "use 'SPDX-License-Identifier: GPL-3.0-or-later' instead",
+        ),
     ]
 
     # Files which should be ignored, e.g. because they come from another
@@ -276,6 +284,7 @@ def check_spelling(args: argparse.Namespace) -> Optional[bool]:
         pathlib.Path('scripts', 'dev', 'enums.txt'),
         pathlib.Path('qutebrowser', '3rdparty', 'pdfjs'),
         pathlib.Path('qutebrowser', 'qt', '_core_pyqtproperty.py'),
+        pathlib.Path('qutebrowser', 'javascript', 'caret.js'),
         hint_data / 'ace' / 'ace.js',
         hint_data / 'bootstrap' / 'bootstrap.css',
     ]

scripts/dev/run_pylint_on_tests.py

@@ -63,7 +63,7 @@ def main():
     args = [
         '--disable={}'.format(','.join(disabled)),
         '--ignored-modules=helpers,pytest,PyQt5',
-        r'--ignore-long-lines=(<?https?://|^# Copyright 201\d)|^ *def [a-z]',
+        r'--ignore-long-lines=(<?https?://)|^ *def [a-z]',
         r'--method-rgx=[a-z_][A-Za-z0-9_]{1,100}$',
     ] + sys.argv[2:] + files
     env = os.environ.copy()