Re: unshift

[Ray Andrews <rayandrews@xxxxxxxxxxx>]

On 2024-04-01 06:54, Mark J. Reed wrote:

I haven't read your whole message yet, but to unshift a new value in front of the positional params, all you have to do is this:

    set -- "$new" "$@"

And now $1 is "$new", $2 is whatever $1 used to be, and so on.

    ... ah, I see, you want to just undo a shift. Well, AFAIK
    you can't do that without manually saving the value that was in $1
    before the shift somewhere. Then you can use set to put it
    back.
    
    No problemo.  saving the previous '$1' is no issue, I can hardly
    expect it to be saved somewhere automatically, that would be a
    courtesy hardly of much use and not worth the bother.  The 'set'
    trick above is exactly perfect.  
    
    Thanks Mark.