Format specifiers in f-strings don't highlight the entire thing in a consistent manner

Hello. Sometimes the :... aspect of a format string is highlighted in its entirety but often times it's not. I would like to know if it's possible to make it so it's all under the same consistent scope or if it's by design that it doesn't. My main use case has to do with types using a custom __format__.

For example:

I would have imagined both of these to fall under the same scope but they're not.

The first screenshot goes source.python > meta.fstring.python > storage.type.format.python
The second screenshot goes source.python > meta.function-call.python > meta.function-call.arguments.python > meta.fstring.python

A regular line of code without using custom __format__ (e.g. {test:.2f}) goes as source.python > meta.function-call.python > meta.function-call.arguments.python > meta.fstring.python > storage.type.format.python which is what I would expect the other two to return as well, unless it's meant to be treated differently.

• Editor name and version: Sublime Text 3.2.1 Build 3207
• Platform: Windows 8.1
• Color scheme: Custom
• MagicPython version: 1.1.1
• A sreenshot: See above
• 5-10 lines of surrounding code: In the screenshot hopefully

Inizia riproducendo i due esempi di f-string in Sublime Text 3.2.1 con MagicPython 1.1.1 e ispeziona i relativi scope sintattici, confrontandoli con l’esempio regolare {test:.2f}. Il lavoro è completato quando gli specificatori di formato nei casi segnalati ricevono uno scope coerente, oppure quando il comportamento viene documentato come intenzionale.