Re: [PATCH 1/3] [gdb/tui] Keep inferior output in cmd window with ^L

[Tom de Vries <tdevries@suse.de>]

On 5/31/23 15:35, Bruno Larsen wrote:
> I can confirm that this fixes the issue you mentioned when the terminal 
> scrolls. The problem is that now, if the output doesn't cause the screen 
> to scroll, it doesn't show up on screen at all.

Is it possible that you're talking about a pre-existing issue?

That is, we have:
...
(gdb) next
...
and after <enter> we have very, very briefly:
...
(gdb) next<enter>
hello
...
before the prompt overwrites it:
...
(gdb) next<enter>
(gdb)
...

I get this behaviour with and without the patch series.  AFAIU, the only 
way to deal with this (that doesn't go all the way into introducing 
pseudo-terminals) is by introducing a separate cmd and output window in 
TUI.  Alternatively, we can move the prompt to the bottom of the command 
window, I've spent a day or so trying to make that work, but abandoned that.

If this is not the behaviour you're talking about, please describe a way 
of reproducing what you observe.

Anyway, another way of showing the effect of the patch series in the 
no-scrolling-case is to add an extra hello to the test-case, and do 
"next 2".

Without the patch series we have:
...
(gdb) next 2
(gdb)
hello
...
and after ^L just:
...
(gdb) next 2
(gdb)
...

With the patch series the same:
...
(gdb) n 2
(gdb)
hello
...
and the same after ^L.

Thanks,
- Tom