Fix locale with hyphens

Author: timvink

src/mkdocs_git_revision_date_localized_plugin/plugin.py

@@ -291,6 +291,12 @@ def on_page_markdown(self, markdown: str, page: Page, config: config_options.Con
         if not locale:
             locale = self.config.get("locale")
 
+        # Normalize locale for Babel: convert hyphens to underscores (e.g., pt-BR -> pt_BR)
+        # This is needed for compatibility with mkdocs-static-i18n and other plugins
+        # that may use hyphenated locale codes, while Babel expects underscores
+        if locale:
+            locale = str(locale).replace("-", "_")
+
         # Retrieve git commit timestamp
         # Except for generated pages (f.e. by mkdocs-gen-files plugin)
         if getattr(page.file, "generated_by", None):

tests/fixtures/basic_project/mkdocs_theme_locale_and_language_5char.yml

@@ -0,0 +1,11 @@
+site_name: test gitrevisiondatelocalized_plugin
+use_directory_urls: true
+
+theme:
+    name: 'material'
+    language: zh
+
+plugins:
+    - search
+    - git-revision-date-localized:
+        locale: "pt-BR"

tests/test_builds.py

@@ -341,6 +341,7 @@ def validate_mkdocs_file(temp_path: str, mkdocs_yml_file: str):
     "basic_project/mkdocs.yml",
     "basic_project/mkdocs_theme_timeago_locale.yml",
     "basic_project/mkdocs_theme_language.yml",
+    "basic_project/mkdocs_theme_locale_and_language_5char.yml",
     "basic_project/mkdocs_theme_locale_and_language.yml",
     "basic_project/mkdocs_theme_locale_disabled.yml",
     "basic_project/mkdocs_theme_timeago.yml",
@@ -376,7 +377,7 @@ def test_tags_are_replaced(tmp_path, mkdocs_file):
     testproject_path = setup_clean_mkdocs_folder(mkdocs_yml_path=f"tests/fixtures/{mkdocs_file}", output_path=tmp_path)
     setup_commit_history(testproject_path)
     result = build_docs_setup(testproject_path)
-    assert result.exit_code == 0, f"'mkdocs build' command failed with:\n{result.stdout}\nReplicate with 'cd {testproject_path} && uv run mkdocs build'"
+    assert result.exit_code == 0, f"'mkdocs build' command failed with:\n{result.stdout}\nReplicate with 'uv run mkdocs serve -f tests/fixtures/{mkdocs_file}'"
 
     plugin_config = get_plugin_config_from_mkdocs(str(testproject_path / "mkdocs.yml"))
     tags_file = testproject_path / "site/page_with_tag/index.html"