Re: [Qemu-devel] curses.c: "We need a terminal output" ?

[Gerd Hoffmann]

On Mon, Apr 15, 2019 at 03:10:09PM -0400, John Snow wrote:
> <CC'ing curses maintainer>
> 
> On 4/13/19 5:02 AM, Joachim Durchholz wrote:
> > Hi all,
> > 
> > what's the reasoning behind "We need a terminal output" in curses.c?

curses needs a terminal.

> > I don't really see a scenario where it's problematic if qemu emits
> > escape sequences to a pipe.

It's not about sending escape sequences.  A pipe simply doesn't support
all the tty ioctls (query terminal size, turn echo on/off, set all kinds
of terminal modes, ...).

> > I can see another scenario when this is problematic: Unit testing code
> > that directly writes to the console. E.g. testing BIOS code, or testing
> > operating systems when using the serial port is not an option.

seabios can work with the serial console just fine, try "qemu -nographic"

cheers,
  Gerd