Re: [Nano-devel] [PATCH] Multipane support

[Benno Schulenberg]

Op  4-09-2017 om 06:27 schreef Marco Diego Aurélio Mesquita:
> The attached patch implements multipane support in nano. I don't know
> how far it is from been acceptable, but it is already fully
> functional. It is still very hacky right now. I'm sending this patch
> just to gauge interest in such a feature and to get feedback.

Interesting.  But... this is not going in unless people clamor for it.

Also, I don't think it can be made to work colorwise.  Try this:

  src/nano +1 src/text.c +1 doc/faq.html

Press M-1 to get the second pane.  Notice the reds and yellows in the
second pane.  Now press ^X.  The colors change to cyan and red instead,
as they should be.  Run the same command again, press M-1, then M-2,
then M-1 again.  Now the false colors stay.  :|

Now run nano with the files reversed:

  src/nano +1 doc/faq.html +1 src/text.c

Press M-1.  See how the comment block in the second pane is all grey
instead of blue.  Press ^X.  The comment block changes to blue, as it
should.  But not entirely (not on an Xfce terminal -- on a VT yes): the
things where ncurses thinks nothing has changed stay grey.

The above problem will not be easy to fix: it would require initializing
the syntaxes for both panes at the same time, without stepping on each
other...  Let's not go there.

The patch as-is has further defects.  Run for example:

  src/nano  --linenum  +1 doc/faq.html +1 src/text.c

Press M-1 to switch on double-pane.  Then hold Shift and press <Down>
several times.  See how the row below the cursor disappears into a
void.  Release Shift and press an arrow key.  The row returns.  Now
hold Shift and press <Up> several times.  All the rows that have been
below the cursor disappear.  :|

So...  Let's forget it.

Benno