[Libreoffice-bugs] [Bug 122416] New: Unreliable copy-paste on X especially with clipboard sync enabled

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=122416

            Bug ID: 122416
           Summary: Unreliable copy-paste on X especially with clipboard
                    sync enabled
           Product: LibreOffice
           Version: 6.1.4.2 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: andrew.shadura at collabora.co.uk

I was going to describe a bunch of clipboard issues which I believe were all
related, some of them I’ve been observing for quite a long time (since 2007
when it was OOo/Go-OO), but then I noticed I cannot reproduce some of them
anymore, but I will describe them nevertheless for some background.

I use X, and I tend to use both CLIPBOARD and SELECTION, since I like the
ability to select and middle-paste, but at the same time be able to C-c/C-Ins —
C-v/S-Ins when selecting things with mouse is tricky. I also use clipboard sync
tools, ClipIt at the moment, its predecessor before that, and whatever KDE 3.5
clipboard tool was when I first started to use OpenOffice on Linux.

So, the first issue, which I am no longer able to reproduce, was that OOo/LO
tended to quite aggressively deselect text, making it very difficult or
impossible to copy-paste by selecting text and middle-clicking elsewhere; for
some reason, nothing would be pasted (I suspect, OOo/LO wasn’t holding the
SELECTION for long enough). Now, this seems to have been fixed some time ago,
since despite myself being absolutely sure it doesn’t work in LO and not using
selection copy-paste for years, I was unable to reproduce it this morning.

However, I was able to reproduce another issue, which is that when losing the
selection, LO seems to leave random bits of text in there (I am now not sure is
it SELECTION or CLIPBOARD, but I suspect SELECTION since it doesn’t seem to
happen when I have the sync switched off). E.g.:

— I select a long sentence, middle-paste it somewhere, click elsewhere once,
the selection disappears, I middle-paste again, only one word of that sentence
gets inserted
— I select the same sentence again, middle-paste it again, click to make
selection disappear, middle-paste again, whole sentence gets inserted

Note that it also happens if I select with mouse but copy-paste with clipboard
— only as long as clipboard sync is on, it seems. So:

— I select something long with mouse, press C-c, click elsewhere, C-v, only one
word gets pasted. Sometimes, the previously copied text would get pasted.
Usually, when I select and copy that text *again*, I get the right stuff in the
clipboard and it gets pasted as it should.

On a, let’s say, *production* machine where lots of texts get edited in
LibreOffice, I had to disable the clipboard sync at all despite the user (not
me) liking the middle-paste feature.

I know X clipboards is a terrible mess on its own, and technically clipboard
sync is a hack which just happens to mostly work, but still, other apps somehow
manage to mostly work while LibreOffice has its issues, and OpenOffice.org has
even more of them in the past. I hope someone managed to reproduce this and if
not fix it, at least make it more reliable.

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