I find the Horstmann indentation style [1], in which code is placed on the same line as the opening bracket, simultaneously disturbing and compelling. If it ever ends up added to clang-format as has been requested [2], it might become more popular.
[1] https://en.wikipedia.org/wiki/Indentation_style#Horstmann_st... [2] https://bugs.llvm.org/show_bug.cgi?id=27263