BUG: Correct functionality of numpydoc SS05 (#613)

* BUG: Correct functionality of numpydoc SS05.

Currently SS05 checks for infinitive verbs by checking if the last character is "s". However, if the first word is "process", which is valid, this incorrectly throws a numpydoc validation error.

This commit allows the first word to end in two "s"es without flagging as an error. This will allow for words like "process" or "progress," while still checking for invalid words like "creates."

* Update numpydoc/validate.py

* FIX: Overrides

---------

Co-authored-by: Eric Larson <larson.eric.d@gmail.com>

Author: maxinelasp

numpydoc/tests/hooks/example_module.py

@@ -23,8 +23,8 @@ def do_something(self, *args, **kwargs):
         *args
         """
 
-    def process(self):
-        """Process stuff."""
+    def create(self):
+        """Creates stuff."""
 
 
 class NewClass:

numpydoc/tests/hooks/test_validate_hook.py

@@ -116,9 +116,7 @@ def test_validate_hook_with_toml_config(example_module, tmp_path, capsys):
                 ]
                 exclude = '\\.__init__$'
                 override_SS05 = [
-                    '^Process',
-                    '^Assess',
-                    '^Access',
+                    '^Creates',
                 ]
                 """
             )
@@ -154,7 +152,7 @@ def test_validate_hook_with_setup_cfg(example_module, tmp_path, capsys):
                 [tool:numpydoc_validation]
                 checks = all,EX01,SA01,ES01
                 exclude = \\.__init__$
-                override_SS05 = ^Process,^Assess,^Access
+                override_SS05 = ^Creates
                 """
             )
         )
@@ -198,9 +196,7 @@ def test_validate_hook_exclude_option_pyproject(example_module, tmp_path, capsys
                     '\.__init__$',
                 ]
                 override_SS05 = [
-                    '^Process',
-                    '^Assess',
-                    '^Access',
+                    '^Creates',
                 ]
                 """
             )
@@ -232,7 +228,7 @@ def test_validate_hook_exclude_option_setup_cfg(example_module, tmp_path, capsys
                 [tool:numpydoc_validation]
                 checks = all,EX01,SA01,ES01
                 exclude = \\.NewClass$,\\.__init__$
-                override_SS05 = ^Process,^Assess,^Access
+                override_SS05 = ^Creates
                 """
             )
         )

numpydoc/validate.py

@@ -710,7 +710,13 @@ def validate(obj_name, validator_cls=None, **validator_kwargs):
             errs.append(error("SS03"))
         if doc.summary != doc.summary.lstrip():
             errs.append(error("SS04"))
-        elif doc.is_function_or_method and doc.summary.split(" ")[0][-1] == "s":
+        # Heuristic to check for infinitive verbs - shouldn't end in "s"
+        elif (
+            doc.is_function_or_method
+            and len(doc.summary.split(" ")[0]) > 1
+            and doc.summary.split(" ")[0][-1] == "s"
+            and doc.summary.split(" ")[0][-2] != "s"
+        ):
             errs.append(error("SS05"))
         if doc.num_summary_lines > 1:
             errs.append(error("SS06"))