Temporary shell session?

[rrveex]

Hi,

using the low level API, I'd like to do something in the shell, then exit back to the TUI.

    loop.stop();
    const tty = loop.tty;
    try loop.vaxis.exitAltScreen(tty.anyWriter());

    std.posix.tcsetattr(tty.fd, .FLUSH, tty.termios) catch |err| {
        std.log.err("couldn't restore terminal: {}", .{err});
    };
    try tty.anyWriter().writeAll(vaxis.ctlseqs.show_cursor);
    // std.posix.close(tty.fd);

    try exec(... something, like bash...);

    // tty.fd = try std.posix.open("/dev/tty", .{ .ACCMODE = .RDWR }, 0);
    tty.termios = try vaxis.tty.Tty.makeRaw(tty.fd);

    try loop.vaxis.enterAltScreen(tty.anyWriter());
    try loop.start();

Is there some elegant way to do this?

[rockorager]

Yeah there is a nicer way to do this. You can see it in action in the text_input example, but the snippet to do it is here:

if (key.matches('n', .{ .ctrl = true })) {
    loop.stop();
    var child = std.process.Child.init(&.{"nvim"}, alloc);
    _ = try child.spawnAndWait();
    try loop.start();
    try vx.enterAltScreen(tty.anyWriter());
    vx.queueRefresh();
}

[rrveex]

Seems to work with nvim indeed. However, when replacing nvim with bash or zsh, neither shell is usable.

Not even the first try (code above) was enough, I ended up completely deinitializing vaxis and initializing again after shell terminates.