- handle and align x macros in brace initializers
- handle and align cpp macros in brace initializers
- allow enum declarations on a single line
- preserve new lines before comments and cpp declarations at end of a
statement block
- only grow the buffer if more than half of the space is utilized
- do not let a cpp branch inside a struct declaration end the current
scope of alignment
- long expressions in combination with optional new lines would not
break under certain circumstances
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