Some comments aren't removed

[AlCash07]

Comments in global namespace aren't removed, and I didn't find an option to change this behavior. Comments inside classes that are at least partially inlined are also affected.

[slycelote]

You should probably clarify exact scenarios when it happens. Doxygen or, with -fparse-all-comments, 'almost Doxygen' comments attached to unused declarations definitely get removed. I know that trailing comments don't. Anything else?

[AlCash07]

In the following example both comments aren't removed without -fparse-all-comments, and with this option the one inside class is removed: http://ideone.com/BSoOtw. Looks like, standalone comments are always ignored.

[slycelote]

The first comment is removed with -fparse-all-comments or if it is changed to doxygen style, as expected. The second comment is not removed because it is attached to a used function.

[AlCash07]

I think it would make sense to attach a comment to a function only if there are no empty lines between them.

[slycelote]

I believe that's how Doxygen and, by extension, clang parser works. Could probably be hacked around but I don't think it's worth it.