feat(t002): allow variables names to be used in the {% extends tag

closes #349

src/djlint/rules.yaml

@@ -25,7 +25,7 @@
     message: Double quotes should be used in tags.
     flags: re.DOTALL
     patterns:
-    - '{%.?extends\s+?[^\"]\w+'
+    - "{%[ \t]*?extends[ \t]+?'[^']*'"
 - rule:
     name: T003
     message: 'Endblock should have name. Ex: {% endblock body %}.'

tests/test_linter/test_linter.py

@@ -69,6 +69,11 @@ def test_T002(runner: CliRunner, tmp_file: TextIO) -> None:
     assert result.exit_code == 1
     assert "T002 1:" in result.output
 
+    # allow variable names (unquoted)
+    write_to_file(tmp_file.name, b"{% extends this %}")
+    result = runner.invoke(djlint, [tmp_file.name, "--profile", "django"])
+    assert "T002" not in result.output
+
 
 def test_T003(runner: CliRunner, tmp_file: TextIO) -> None:
     write_to_file(tmp_file.name, b"{% endblock %}")