Incorrect fix for "%s" % "\n"

[wolfgangl]

Please see example below:

echo '"%s" % "\n"' > test.py

python -m  fixit.cli.apply_fix test.py

Scanning 1 files
test.py

Encountered exception <class 'Exception'> for the following paths:
test.py
Running `pyre start` may solve the issue.
test.py:1:1 [applied fix]
    UseFstringRule: Do not use printf style formatting or .format(). Use f-string instead to be more
    readable and efficient. See https://fburl.com/usefstring.
Encountered exception <class 'Exception'> for the following paths:
test.py
test.py
test.py
Running `pyre start` may solve the issue.
All done! ✨ 🍰 ✨
1 file left unchanged.

Found 1 reports in 1 files in 0.33 seconds.


cat test.py 
f"{'\n'}"


python test.py 
  File "test.py", line 1
    f"{'\n'}"
    ^
SyntaxError: f-string expression part cannot include a backslash

[amyreese]

Hey folks, we just released Fixit 2.0, which includes major changes to the core frameworks, linting engine, API, and CLI. In light of this new release, this issue is likely to be resolved or no longer relevant. Please take a look at the new user guide or the upgrade guide for more information on how to migrate your projects to the new version.

If you believe this issue is still relevant or still occurring in the latest version, please feel free to open a new issue, or reply here with more details.

Thank you!