CBline length independent of Comment length

[PapierFliegr]

Feature Request:
Instead of always having the CBline always having line_width+Comment characters, is it possible to set set the CBline char number dynamically?
Would make code structure even prettier.

We could have two options there:

1. Set CBline length = line_width - comment_char
2. Set CBline length = line_width - comment_char - indent

The first would display indent structure, whereas the second would keep a nice edge.
For the second option indentation should be preserved.