Scroll the whole page on PageDown/PageUp

[gyscos]

Hi, and thanks for the PR!

I'd probably scroll by the screen height minus 1 (but with a minimum of 1), so the last line before pressing scroll-down is still visible at the top. What do you think?

[azat]

I'd probably scroll by the screen height minus 1 (but with a minimum of 1), so the last line before pressing scroll-down is still visible at the top. What do you think?

Initially I did the same as less does - it scroll the whole page page (on PageUp/PageDown). I think that here it is better to preserve behavior of some existing tool, and less looks like a good example to follow.

But if you still think that the last line should be preserved, I've pushed a patch on top that does this, feel free to apply either only the first one, or the whole patch set.

[gyscos]

Indeed, it seems different application use different configurations:

• Pagers, such as less, more, bat seem to keep no line, and show an entire "new page" with page-down (or space).
• Editors seem to preserve some lines (my nvim seems to preserve 2 lines, my gedit 5 lines, ...).

I agree that scroller should probably behave more like a pager than an editor (editable views like TextArea would implement their own page-down handling).

[gyscos]

I merged the first commit.