Backslash roundtrip problem about toml HOT 5 OPEN

Got bitten by this just now. I have a user whose name starts with an 'x' and saving their home directory path into a config file breaks my app. Not fun.

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I'm switching to tomli (included in the standard library of version 3.11) in combination with tomli_w.

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We were also bitten by this:

>>> toml.dumps({'A': '\\x2d'})
'A = "\\u002d"\n'

As was already pointed out, this code is at fault:

The code is extremely complicated and must be untangled in order to fix this bug. We didn't attempt it; instead we're planning on switching to tomli.

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Ok, I think I've narrowed this down to the presence of \x in the string:

In [24]: toml.dumps({'a': r'\x43'})
Out[24]: 'a = "\\u0043"\n'

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I've created a pull request. However, I notice there are problems with strings like '\x02' which don't seem to work, which my pull request doesn't address.

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