Line comment continuation needs some tweaking

[PEZ]

When continuing a comment within a form I thought it was a good idea to enable the command, and do the same continuation regardless of where on the line the cursor is. Having used it during the workday I have noticed that this is not optimal. I think it boils down to these two problems:

1. In the leading whitespace before a comment, I expect the top-level evaluation to happen when I press alt+enter.
2. When the cursor is not at the end of the line I expect the trailing part of the comment to be moved down to the new comment line.

The first one:

(foo
 |  ; foo
   :foo)

alt+enter

Expected: Evaluation of top level form

Actual: Comment continuation

The second one:

   ; foo |bar

alt+enter

Expected:

   ; foo 
   ; |bar

Actual:

   ; foo bar
   ; |