[okular] [Bug 394159] Feature Request: Mode for comparing files by overlaying

[Markus Kuhn]

https://bugs.kde.org/show_bug.cgi?id=394159

Markus Kuhn <Markus.Kuhn at cl.cam.ac.uk> changed:

           What    |Removed                     |Added
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                 CC|                            |Markus.Kuhn at cl.cam.ac.uk

--- Comment #1 from Markus Kuhn <Markus.Kuhn at cl.cam.ac.uk> ---
I'd like to suggest a much simpler solution to the same problem:

I also frequently have to compare two PDFs for minor changes, and I do this by
opening both PDFs in okular, each in one tab, and then I flip between both tabs
using Ctrl-[ and Ctrl-]. Even tiny differences between the pages become
immediately obvious.

Such tab-flipping works already very well for comparing single-page documents. 

But comparing multi-page documents is still tedious: I have to scroll to the
next page in each tab separately, and it is very easy for the page selection to
get out of sync across the tabs.

So it would be extremely helpful if you could just add a new keyboard shortcut

 "Scroll Page Down All Tabs" = Ctrl-;

That new shortcut would scroll to the next page on all tabs (all open files)
simultaneously (like pressing space in each tab), such that it becomes easy to
stay on the same page in all open documents, for easy comparison.

Ctrl-; would be particularly conveniently located on US/UK keyboards, as it is
right next to Ctrl-[ and Ctrl-] (Prev/Next Tab), the keys it would be commonly
used with.

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