We need something like Ctrl-Shift-J in IntelliJ: pull content of next line up to current line.
If I understand the request correctly, this is about joining the current and next line, without any regard to statements. Is that right? Otherwise, what exactly is proposed?
Yes, that's exactly right.
There is a workaround: [End] [Home] [Shift-Home] [Del] [Backspace]. If you map this sequence to a macro with shortcut Ctrl-Shift-J you are done.
Well, OK, but that's not really ideal. An Action invoked via a Shortcut that does this would be preferable.