Mystery solved! A fix for the infamous 5 year old \x bug, that is driving users away. about toml HOT 1 OPEN

r"""  Commands to reproduce:
python -m venv test_bug_148
Posix: source test_bug_148/bin.activate.sh
Windows: .\test_bug_148\Scripts\activate.bat
pip install pytest toml tomli tomli-w tomlkit toml_tools
pytest --tb=no -rA -q test_bug_148_original.py

Expected on Windows 10 Python 3.12:
F.FFFFFFF                                                                                                                                                          [100%]
======================================================================== short test summary info ======================================================================== 
PASSED test_bug_148_original.py::test_bug_148_toml
FAILED test_bug_148_original.py::test_inverse_bug_148_toml - AssertionError: assert {'a': 'd'} == {'a': '\\x64'}
FAILED test_bug_148_original.py::test_inverse_bug_148_tomllib - AssertionError: assert {'a': 'd'} == {'a': '\\x64'}
FAILED test_bug_148_original.py::test_inverse_bug_148_tomli - AssertionError: assert {'a': 'd'} == {'a': '\\x64'}
FAILED test_bug_148_original.py::test_inverse_bug_148_tomlkit - AssertionError: assert {'a': 'd'} == {'a': '\\x64'}
FAILED test_bug_148_original.py::test_inverse_bug_148_toml_tools - AssertionError: assert {'a': 'd'} == {'a': '\\x64'}
FAILED test_bug_148_original.py::test_bug_148_tomli_w - assert 'a = "\\u0064"\n' == 'a = "\\\\x64"\n'
FAILED test_bug_148_original.py::test_bug_148_tomlkit - assert 'a = "\\u0064"\n' == 'a = "\\\\x64"\n'
FAILED test_bug_148_original.py::test_bug_148_toml_tools - assert 'a = "\\u0064"\n' == 'a = "\\\\x64"\n'
8 failed, 1 passed in 0.11s


"""

import sys
if sys.version_info >= (3,11):
    import tomllib


import tomli
import tomli_w
import tomlkit
import toml
import toml_tools


def make_bug_148_test_function(toml_module):
    def test_bug_148():
        assert 'a = "\\u0064"\n' == toml_module.dumps({'a': '\\x64'})
        assert 'a = "\\\\x64"\n' == toml_module.dumps({'a': '\\\\x64'})
        assert 'a = "\\\\\\u0064"\n' == toml_module.dumps({'a': '\\\\\\x64'})
    return test_bug_148



def make_inverse_bug_148_test_function(toml_module):
    def test_bug_148_inverse():
        assert toml_module.loads('a = "\\u0064"\n') == {'a': '\\x64'}
        assert toml_module.loads('a = "\\\\x64"\n') == {'a': '\\\\x64'}
        assert toml_module.loads('a = "\\\\\\u0064"\n') == {'a': '\\\\\\x64'}
    return test_bug_148_inverse



test_inverse_bug_148_toml = make_inverse_bug_148_test_function(toml)
test_bug_148_toml = make_bug_148_test_function(toml)

# native in Python 3.11
try:
    test_inverse_bug_148_tomllib = make_inverse_bug_148_test_function(tomllib)
except NameError:
    pass

test_inverse_bug_148_tomli = make_inverse_bug_148_test_function(tomli)
test_inverse_bug_148_tomlkit = make_inverse_bug_148_test_function(tomlkit)
test_inverse_bug_148_toml_tools = make_inverse_bug_148_test_function(toml_tools)

test_bug_148_tomli_w = make_bug_148_test_function(tomli_w)
test_bug_148_tomlkit = make_bug_148_test_function(tomlkit)
test_bug_148_toml_tools = make_bug_148_test_function(toml_tools)

r"""  Commands to reproduce:
python -m venv test_bug_148
Posix: source test_bug_148/bin.activate.sh
Windows: .\test_bug_148\Scripts\activate.bat
pip install pytest toml tomli tomli-w tomlkit toml_tools
pytest --tb=no -rA -q test_bug_148_fixed.py

Expected on Windows 10 Python 3.12:
.F.......                                                                                                                                                          [100%]
======================================================================== short test summary info ========================================================================
PASSED test_bug_148_correctly.py::test_inverse_bug_148_toml
PASSED test_bug_148_correctly.py::test_inverse_bug_148_tomllib
PASSED test_bug_148_correctly.py::test_inverse_bug_148_tomli
PASSED test_bug_148_correctly.py::test_inverse_bug_148_tomlkit
PASSED test_bug_148_correctly.py::test_inverse_bug_148_toml_tools
PASSED test_bug_148_correctly.py::test_bug_148_tomli_w
PASSED test_bug_148_correctly.py::test_bug_148_tomlkit
PASSED test_bug_148_correctly.py::test_bug_148_toml_tools
FAILED test_bug_148_correctly.py::test_bug_148_toml - assert 'a = "\\\\x64"\n' == 'a = "\\u0064"\n'
1 failed, 8 passed in 0.13s
"""


import sys
if sys.version_info >= (3,11):
    import tomllib


import tomli
import tomli_w
import tomlkit
import toml
import toml_tools


def make_correct_bug_148_test_function(toml_module):
    def test_bug_148():
        assert r'a = "\\x64"' + '\n' == toml_module.dumps({'a': r'\x64'})
        assert r'a = "\\\\x64"' + '\n' == toml_module.dumps({'a': r'\\x64'})
        assert r'a = "\\\\\\x64"' + '\n' == toml_module.dumps({'a': r'\\\x64'})

    # original from  
    #     assert 'a = "\\u0064"\n' == toml_module.dumps({'a': '\\x64'})
    #     assert 'a = "\\\\x64"\n' == toml_module.dumps({'a': '\\\\x64'})
    #     assert 'a = "\\\\\\u0064"\n' == toml_module.dumps({'a': '\\\\\\x64'})
    return test_bug_148



def make_correct_inverse_bug_148_test_function(toml_module):
    def test_bug_148_inverse():
        assert toml_module.loads(r'a = "\\x64"' + '\n') == {'a': r'\x64'}
        assert toml_module.loads(r'a = "\\\\x64"' + '\n') == {'a': r'\\x64'}
        assert toml_module.loads(r'a = "\\\\\\x64"' + '\n') == {'a': r'\\\x64'}
    return test_bug_148_inverse



test_inverse_bug_148_toml = make_correct_inverse_bug_148_test_function(toml)
test_bug_148_toml = make_correct_bug_148_test_function(toml)

# native in Python 3.11
try:
    test_inverse_bug_148_tomllib = make_correct_inverse_bug_148_test_function(tomllib)
except NameError:
    pass

test_inverse_bug_148_tomli = make_correct_inverse_bug_148_test_function(tomli)
test_inverse_bug_148_tomlkit = make_correct_inverse_bug_148_test_function(tomlkit)
test_inverse_bug_148_toml_tools = make_correct_inverse_bug_148_test_function(toml_tools)

test_bug_148_tomli_w = make_correct_bug_148_test_function(tomli_w)
test_bug_148_tomlkit = make_correct_bug_148_test_function(tomlkit)
test_bug_148_toml_tools = make_correct_bug_148_test_function(toml_tools)