fix(server): permit to register new spellings for other languages than en

Author: mdevolde

language_tool_python/server.py

@@ -207,10 +207,10 @@ def __init__(
                 language = get_locale_language()
             except ValueError:
                 language = FAILSAFE_LANGUAGE
+        self._language = LanguageTag(language, self._get_languages())
         if new_spellings:
             self._new_spellings = new_spellings
             self._register_spellings()
-        self._language = LanguageTag(language, self._get_languages())
         self._mother_tongue = mother_tongue
         self._disabled_rules = set()
         self._enabled_rules = set()
@@ -736,12 +736,24 @@ def _get_valid_spelling_file_path(self) -> Path:
             raise PathError(err)
         library_path = self._local_language_tool.get_directory_path()
 
+        language = self._language.normalized_tag.split("-")[
+            0
+        ].lower()  # if language is "en-US", we want "en"
+
+        if language == "auto":
+            # Default to English if auto is selected, as the spelling file is needed for new spellings
+            # The new spellings will only be taken into account if the server detects the language as English
+            logger.debug(
+                "Language is set to 'auto'. Defaulting to 'en' for spelling file path."
+            )
+            language = "en"
+
         spelling_file_path = (
             library_path
             / "org"
             / "languagetool"
             / "resource"
-            / "en"
+            / language
             / "hunspell"
             / "spelling.txt"
         )

tests/test_server_local.py

@@ -124,6 +124,25 @@ def test_session_only_new_spellings() -> None:
     assert initial_checksum.hexdigest() == subsequent_checksum.hexdigest()
 
 
+def test_new_spellins_in_es() -> None:
+    """
+    Test that new spellings are recognized in Spanish language.
+    This test verifies that when new_spellings are added for the Spanish language,
+    they are correctly recognized by the tool during grammar checking.
+    (This test is important to ensure that the new spellings functionality works
+    across different languages and is not limited to English.)
+
+    :raises AssertionError: If the new spellings are not recognized in Spanish.
+    """
+    import language_tool_python
+
+    with language_tool_python.LanguageTool(
+        "es", new_spellings=["ejempo"], new_spellings_persist=False
+    ) as tool:
+        matches = tool.check("Este es un ejempo sencillo.")
+        assert not matches
+
+
 def test_uk_typo() -> None:
     """
     Test grammar checking and correction with UK English language rules.