Whonix coding style inconsistencies

A few inconsistencies in the source code are slightly irking me.

Across the Whonix source code, a lot of the line wrapping is inconsistent. One line may be X characters long whilst another is Y characters, particularly when it comes to comments. What would the preferred length be?

The bracing of variables in bash code is also inconsistent. Should variables be $example or ${example}? I usually prefer to brace variables because I think it looks better and because it’s good practice but most other code doesn’t use braces.