On Fri, 03 Nov 2023 at 10:03, Thomas Munro <thomas.mu...@gmail.com> wrote: > 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.
Thanks for your explantation, the termios.c_oflag on Illumos enables TABDLY by default. -- Regrads, Japin Li ChengDu WenWu Information Technology Co., Ltd.