When PDF file is highlighted without any comment, File annotations display "N/A", it is better to leave it empty

[psychelzh]

JabRef version 4.0 on Windows 10

Just as the following screenshot, N/A seems a little intrusive for users.

[psychelzh]

And on the left panel, I do think it is best to display the so-called Marking, and try to remove CRLF/\n/\r's from the Marking content.

[PammyS]

@psychelzh @tobiasdiez I'll be happy to take this. Please assign it to me

[tobiasdiez]

@PammyS nice to hear! If you have any questions, feel free to ask here. I can't assign you to this issue since you have not made any contribution before.

[LinusDietz]

I am not sure if we can remove these line breaks from the extracted markings, as it is quite unclear if they come from line break in the paper or from a new paragraph... However, who has a marking spanning several paragraphs or headings?

[psychelzh]

I tend to suggest that the line breaks can be safely removed. Just as you put, few people will try to mark several paragraphs; and if so, they can also be merged, can't they? @lynyus

[tobiasdiez]

The N/A string is now removed, but the line breaks of the marking are still there. By the way, in #3285 I added a new formatter that removes line breaks. So one just needs to run it on the marking.