On Fri, Nov 3, 2023 at 2:22 PM Thomas Munro <thomas.mu...@gmail.com> wrote: > On Fri, Nov 3, 2023 at 3:42 AM Japin Li <japi...@hotmail.com> wrote: > > I think this might be a bug comes from Illumos pseudo-tty. I can reproduce > > this by using pseudo-tty on Illumos. > > I don't know but my guess is that this has to do with termios defaults > being different. From a quick look at 'man termios', perhaps TABDLY > is set to expand tabs to spaces? Can you fix it by tweaking the flags > in src/common/sprompt.c?
Argh, sorry that's completely the wrong end. I suppose that sort of thing would have to happen in IPC::Run. I wonder what would happen if IPC::Run called ->set_raw() on the IO::Pty object it constructs, or failing that, if IO::Stty can be used to mess with the relevant settings.