Visual indent changed for certain continued strings

[avancil]

Certain strings, wrapped with a continuation character, are getting changed with autopep8, even though pycodestyle has no issue with them, and they are PEP8 compliant.

In the code below, autopep8 wants to realign my_str. Notably:

• This issue was NOT seen with autopep8 2.3.1 running in Python 3.10.14. It DOES show up with autopep8 2.3.1 and Python 3.12.4.
• This issue does not show up if the f-string is not used.
• This issue does not show up if the string is at the module level (not indented).

---

Python Code

def my_fn():
    """Do the thing."""
    foo = "foo"
    my_str = f"lorem ipsum lorem ipsum lorem ipsum {foo}" \
             "lorem ipsum lorem ipsum lorem ipsum"

    print(my_str)

Command Line

$ pyenv local 3.12.4
$ autopep8 --diff temp.py 
--- original/temp.py
+++ fixed/temp.py
@@ -5,6 +5,6 @@
 
 foo = "foo"
 my_str = f"lorem ipsum lorem ipsum lorem ipsum {foo}" \
-         "lorem ipsum lorem ipsum lorem ipsum"
+    "lorem ipsum lorem ipsum lorem ipsum"
 
 print(my_str)
$ pycodestyle temp.py
$ pip list | grep autopep8
autopep8                    2.3.1

$ pyenv local 3.10.14
$ autopep8 --diff temp.py 
$
$ pip list | grep autopep8
autopep8                    2.3.1

Your Environment

• Python version: 3.12.4
• autopep8 version: 2.3.1
• Platform: Linux (Ubuntu 24.04)