Preserve quoted newlines following backslashes

CHANGELOG

@@ -1,7 +1,8 @@
 Development Version
 -------------------
 
-Nothing yet.
+* Preserve whitespace and line endings inside quoted values containing a
+  backslash followed by a newline when formatting SQL.
 
 
 Release 0.6.0 (Aug 13, 2026)

sqlparse/utils.py

@@ -28,7 +28,7 @@
   '(?:[^'\\]|\\.)*'      # Match single quoted strings
  )
 )
-""", re.VERBOSE)
+""", re.VERBOSE | re.DOTALL)
 
 LINE_MATCH = re.compile(r'(\r\n|\r|\n)')
 

tests/test_format.py

@@ -175,6 +175,30 @@ def test_notransform_of_quoted_crlf(self):
                 == "SELECT some_column LIKE 'value\\\\\\'\r' WHERE id = 1\n")
 
 
+@pytest.mark.parametrize('quote', ["'", '"'])
+@pytest.mark.parametrize('newline', ['\n', '\r', '\r\n'])
+@pytest.mark.parametrize('options', [{}, {'strip_whitespace': True},
+                                    {'reindent': True}])
+def test_preserve_quoted_newlines_after_backslash(quote, newline, options):
+    text = 'SELECT ' + quote + 'a\\' + newline + 'b  \r\nc' + quote + ';'
+
+    assert sqlparse.format(text, **options) == text
+
+
+@pytest.mark.parametrize('mode', ['strip_whitespace', 'reindent'])
+def test_keyword_transform_preserves_multiple_literals(mode):
+    left = "'select a\\\nb  \r\nc'"
+    right = "'from d\\\ne  \r\nf'"
+    text = f'select {left} as x,\n{right} as y;'
+
+    actual = sqlparse.format(text, keyword_case='upper', **{mode: True})
+
+    assert actual.startswith('SELECT ')
+    assert actual.count(' AS ') == 2
+    assert left in actual
+    assert right in actual
+
+
 class TestFormatReindentAligned:
     @staticmethod
     def formatter(sql):

tests/test_utils.py

@@ -10,3 +10,14 @@
     ['`foo`', 'foo']))
 def test_remove_quotes(value, expected):
     assert utils.remove_quotes(value) == expected
+
+
+@pytest.mark.parametrize('quote', ["'", '"'])
+@pytest.mark.parametrize('newline', ['\n', '\r', '\r\n'])
+@pytest.mark.parametrize('backslashes', [1, 2])
+def test_split_unquoted_newlines_after_backslash(quote, newline, backslashes):
+    quoted = (quote + 'a' + '\\' * backslashes + newline
+              + 'b  \r\nc' + quote)
+    text = 'SELECT\r\n' + quoted + '\rFROM t'
+
+    assert utils.split_unquoted_newlines(text) == ['SELECT', quoted, 'FROM t']