BUG (string dtype): fix escaping of newline/tab characters in the repr

Author: jorisvandenbossche

pandas/core/arrays/string_.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from functools import partial
 import operator
 from typing import (
     TYPE_CHECKING,
@@ -64,6 +65,8 @@
 from pandas.core.indexers import check_array_indexer
 from pandas.core.missing import isna
 
+from pandas.io.formats import printing
+
 if TYPE_CHECKING:
     import pyarrow
 
@@ -391,6 +394,14 @@ def _from_scalars(cls, scalars, dtype: DtypeObj) -> Self:
             raise ValueError
         return cls._from_sequence(scalars, dtype=dtype)
 
+    def _formatter(self, boxed: bool = False):
+        formatter = partial(
+            printing.pprint_thing,
+            escape_chars=("\t", "\r", "\n"),
+            quote_strings=not boxed,
+        )
+        return formatter
+
     def _str_map(
         self,
         f,

pandas/tests/series/test_formats.py

@@ -6,8 +6,6 @@
 import numpy as np
 import pytest
 
-from pandas._config import using_string_dtype
-
 import pandas as pd
 from pandas import (
     Categorical,
@@ -143,9 +141,6 @@ def test_tidy_repr_name_0(self, arg):
         rep_str = repr(ser)
         assert "Name: 0" in rep_str
 
-    @pytest.mark.xfail(
-        using_string_dtype(), reason="TODO(infer_string): investigate failure"
-    )
     def test_newline(self):
         ser = Series(["a\n\r\tb"], name="a\n\r\td", index=["a\n\r\tf"])
         assert "\t" not in repr(ser)