fix(community): reject trailing hyphen in GitHub handles

Author: fschlz

community/_ci/project_rules.py

@@ -9,8 +9,8 @@
 ALLOWED_FIELDS = set(REQUIRED_FIELDS)
 MAX_DESCRIPTION_LENGTH = 250
 
-# GitHub usernames/orgs: alphanumeric and hyphens, no leading hyphen, max 39 chars.
-_GITHUB_HANDLE_RE = re.compile(r"^[A-Za-z0-9](?:[A-Za-z0-9-]{0,38})$")
+# GitHub usernames/orgs: alphanumeric and hyphens, no leading/trailing hyphen, max 39 chars.
+_GITHUB_HANDLE_RE = re.compile(r"^[A-Za-z0-9](?:[A-Za-z0-9-]{0,37}[A-Za-z0-9])?$")
 
 
 def load_projects(path: Path) -> tuple[list, list[str]]:

community/_ci/tests/test_project_rules.py

@@ -32,7 +32,7 @@ def test_repo_must_be_http_url():
 
 
 def test_author_must_be_bare_github_handle():
-    for bad in ("@jane-doe", "https://github.com/jane-doe", "jane doe"):
+    for bad in ("@jane-doe", "https://github.com/jane-doe", "jane doe", "jane-", "-jane"):
         errors = validate_project(make_project(author=bad), 0)
         assert any("'author'" in e for e in errors), bad