Hack in zero byte again to not pass in old buffer

Ugh.  Quite hideous but it works.  Hm.

zig/sdl/hello_sdl.zig

@@ -200,7 +200,7 @@ const Runner = struct {
                    return err;
                },
            };
            std.debug.print("{d} ({d})\n", .{ process.stdout_buf.items.len, process.stderr_buf.items.len });
            //std.debug.print("{d} ({d})\n", .{ process.stdout_buf.items.len, process.stderr_buf.items.len });
            if (process.stdout_buf.items.len > 0) {
                return process.stdout();
            } else if (process.stderr_buf.items.len > 0) {
@@ -231,7 +231,7 @@ const GoDocRunner = struct {
    fn toArgv(cmd: []const u8) []const []const u8 {
        // NO idea why bufPrint is required, but without `cmd` will just be some random bit of memory, which is rude.
        _ = std.fmt.bufPrint(&cmd_buf, "{s}", .{cmd["go ".len..]}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "{s}\x00", .{cmd["go ".len..]}) catch "???";
        return &[_][]const u8{ "go", "doc", &cmd_buf };
    }
};
@@ -246,7 +246,7 @@ const PythonHelpRunner = struct {
    }
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "import {s}; help({s});", .{ std.mem.sliceTo(cmd["py ".len..], '.'), cmd["py ".len..] }) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "import {s}; help({s});\x00", .{ std.mem.sliceTo(cmd["py ".len..], '.'), cmd["py ".len..] }) catch "???";
        return &[_][]const u8{ "python", "-c", &cmd_buf };
    }
};
@@ -261,7 +261,7 @@ const PythonRunner = struct {
    }
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "print({s})", .{cmd["py! ".len..]}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "print({s})\x00", .{cmd["py! ".len..]}) catch "???";
        return &[_][]const u8{ "python", "-c", &cmd_buf };
    }
};
@@ -276,7 +276,7 @@ const HelpRunner = struct {
    }
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "{s}", .{cmd[0 .. cmd.len - " --help".len]}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "{s}\x00", .{cmd[0 .. cmd.len - " --help".len]}) catch "???";
        return &[_][]const u8{ &cmd_buf, "--help" };
    }
};
@@ -291,7 +291,7 @@ const ManPageRunner = struct {
    }
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "{s}", .{cmd["man ".len..]}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "{s}\x00", .{cmd["man ".len..]}) catch "???";
        return &[_][]const u8{ "man", &cmd_buf };
    }
};
@@ -306,7 +306,7 @@ const SearchRunner = struct {
    }
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "{s}", .{cmd["s ".len..]}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "{s}\x00", .{cmd["s ".len..]}) catch "???";
        return &[_][]const u8{ "ag", &cmd_buf, "/home/luna/k/the-thing" };
    }
};
@@ -326,7 +326,7 @@ const LogsRunner = struct {
        }
        const service = cmd["logs ".len..];
        _ = std.fmt.bufPrint(&cmd_buf, "(systemctl status {s} &> /dev/null && journalctl -u {s} -f) || (systemctl status --user {s} &> /dev/null && journalctl --user -u {s} -f) || echo \"no logs for '{s}'\"", .{ service, service, service, service, service }) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "(systemctl status {s} &> /dev/null && journalctl -u {s} -f) || (systemctl status --user {s} &> /dev/null && journalctl --user -u {s} -f) || echo \"no logs for '{s}'\"\x00", .{ service, service, service, service, service }) catch "???";
        return &[_][]const u8{ "bash", "-c", &cmd_buf };
    }
};
@@ -341,7 +341,7 @@ const QalcRunner = struct {
    }
    fn toArgv(cmd: []const u8) []const []const u8 {
        _ = std.fmt.bufPrint(&cmd_buf, "{s}", .{cmd}) catch "???";
        _ = std.fmt.bufPrint(&cmd_buf, "{s}\x00", .{cmd}) catch "???";
        return &[_][]const u8{ "qalc", "-terse", &cmd_buf };
    }
};