[issue1777134] minidom pretty xml output improvement

[Virgil Dupras]

Virgil Dupras added the comment:

If the patch would have better styling ("if(onetextnode == True):"), correct the test it breaks, and even better, add new ones, I guess it 
would be an acceptable one.

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nosy: +vdupras

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Tracker <report at bugs.python.org>
<http://bugs.python.org/issue1777134>
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