[issue12014] str.format parses replacement field incorrectly

[Eric V. Smith]

Eric V. Smith <eric at trueblade.com> added the comment:

> but makes me think that treating "!" and ":" in the index field separately is definitely wrong.

But it doesn't know they're in an index field when it's doing the parsing for ':' or '!'.

It might be possible to change this so that the field name is fully parsed first, but I'm not sure the benefit would justify the effort. What's your use case where you need this feature?

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<http://bugs.python.org/issue12014>
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