Improve word splitting / text matching (#906)

src/inspect_ai/scorer/_common.py

@@ -1,3 +1,4 @@
+import re
 from typing import Callable, Literal
 
 from inspect_ai._util.text import (
@@ -67,10 +68,10 @@ def match_str(
         # normalize as required
         t = normalize_number(t)
         if location == "begin":
-            words = v.split(" ")
+            words = re.split(r"\s+", v)
             v = first_number_normalized(words)
         elif location == "end":
-            words = v.split(" ")
+            words = re.split(r"\s+", v)
             words.reverse()
             v = first_number_normalized(words)
         elif location == "exact":

tests/scorer/test_match.py

@@ -0,0 +1,13 @@
+import pytest
+from test_helpers.utils import simple_task_state
+
+from inspect_ai.scorer import CORRECT, Target, match
+
+
+@pytest.mark.asyncio
+async def test_number_eol():
+    scorer = match(numeric=True)
+    state = simple_task_state(model_output="28 + 32 = 60\nThis solves the problem.")
+    result = await scorer(state, Target(["60"]))
+
+    assert result.text == CORRECT