Add failing test for issue 2671: Incorrect rule ID returned from matcher

spacy/tests/regression/test_issue2671.py

@@ -0,0 +1,25 @@
+# coding: utf-8
+from __future__ import unicode_literals
+from spacy.lang.en import English
+from spacy.matcher import Matcher
+
+def get_rule_id(nlp, matcher, doc):
+    matches = matcher(doc)
+    for match_id, start, end in matches:
+        rule_id = nlp.vocab.strings[match_id]
+        span = doc[start:end]
+        return rule_id
+
+
+def test_issue2671():
+    nlp = English()
+    matcher = Matcher(nlp.vocab)
+
+    pattern = [{'LOWER': 'high'}, {'IS_PUNCT': True, 'OP': '?'}, {'LOWER': 'adrenaline'}]
+    matcher.add("test_pattern", None, pattern)
+
+    doc1 = nlp("This is a high-adrenaline situation.")
+    doc2 = nlp("This is a high adrenaline situation.")
+    # Works correctly
+    assert get_rule_id(nlp, matcher, doc1) == 'test_pattern'
+    assert get_rule_id(nlp, matcher, doc2) == 'test_pattern'