Re: [PATCH] upcoming new feature: smooth whole-window sideways scrolling

Benno Schulenberg <[email protected]> Sun, 18 Jan 2026 08:42:17 +0100

Newsgroups	gmane.editors.nano.devel
Message-ID	<[email protected]>

Op 10-01-2026 om 16:07 schreef Benno Schulenberg:
> With above patch applied, run `src/nano +89 doc/faq.html` and press <End>.
> Then hold down <Ctrl+Left> for a second until the cursor is at "Pine",
> somewhere left-of-center on your terminal. See that two lines above are the
> words "free software" and two lines further the word "familiar".  Now tap
> <Up> twice to go to the line with "free software".  Huh?  Where is the
> cursor?!  ... It sits near the right edge of the terminal after "free" and 
> before "so>".  This may be logical and inherent to the patch, but it is
> rather unexpected and undesirable.
> 
> [...]  What I do have is a rough patch that returns 'brink' to what it was
> (when possible) as long as any movement hasn't changed the 'placewewant'
With the above example the patch works nicely.  But now try this:

    src/nano +223,167 doc/faq.html

Type <Ctrl+Left> a dozen times, until the cursor is at "Now".
Then tap <Up> twice.  The cursor will sit before "Alt+Down",
in the same screen column as "Now" was.  That is the intended
behavior.

But now tap <Up> twenty more times.  The cursor walks up along
the right edge of the table with URxvt keysyms while most of
the table is offscreen to the left -- but the table would fit
fully onscreen if 'brink' were kept zero (which it would be
without the patch).

When there is just an occasional overlong line, the patch is
too eager to scroll the screen to the right, so I'm retracting
this extra modification.


Benno

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