Mbed TLS is planning to move to a new code style by the end of this year. The proposed new style is currently being discussed in the GitHub pull request:
If you have any feedback on this new style, or you think we should tweak it, feel free to comment on the pull request. We will take your thoughts into account when we decide on the final style.
Discussions will continue until the evening of THIS FRIDAY (UK time).
Many thanks, David Horstmann for the Mbed TLS Team