[issue21295] Python 3.4 gives wrong col_offset for Call nodes returned from ast.parse

[Mark Shannon]

Mark Shannon added the comment:

The column offset has always been the offset of the start of the expression. Therefore the expression `x.y` should have the same offset as the sub-expresssion `x`.
Likewise for calls, `f(args)` should have the same offset as the `f` sub expression.

Our static analysis tool is a real-world use case:
http://semmle.com/2014/06/semmle-analysis-now-includes-python/

Presumably the submitter of this issue also had a real would use case.

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<http://bugs.python.org/issue21295>
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