3.12: handle multiline FSTRING_MIDDLE

Author: asottile

pycodestyle.py

@@ -2119,7 +2119,10 @@ def maybe_check_physical(self, token, prev_physical):
                 self.check_physical(prev_physical)
             else:
                 self.check_physical(token[4])
-        elif token[0] == tokenize.STRING and '\n' in token[1]:
+        elif (
+                token[0] in {tokenize.STRING, FSTRING_MIDDLE} and
+                '\n' in token[1]
+        ):
             # Less obviously, a string that contains newlines is a
             # multiline string, either triple-quoted or with internal
             # newlines backslash-escaped. Check every physical line in

testsuite/E50.py

@@ -69,6 +69,11 @@
 #: E501 W505
 '''same thing, but this time without a terminal newline in the string
 long long long long long long long long long long long long long long long long line'''
+#: E501
+if True:
+    x = f"""
+        covdefaults>=1.2; python_version == '2.7' or python_version == '{py_ver}'
+    """
 #
 # issue 224 (unavoidable long lines in docstrings)
 #: Okay