Re: stty size doesn't work

[Roman Perepelitsa <roman.perepelitsa@xxxxxxxxx>]

On Sun, Oct 23, 2022 at 10:47 PM Ray Andrews <rayandrews@xxxxxxxxxxx> wrote:
>
> I doubt this is zsh's problem but she may have a solution just the same.  I do this in my 'i' function:
>
>     width=${=$( stty size )[2]}
>
> ... and it works fine, however if I call the function thusly:
>
> _function_test ()
> {
>     local integer i=0
>     while read aa; do
>         let i++
>         eval ${=aa} 2> /dev/null
>     done
> }
>
>     $ _function_test <<< "i path"
>
> ... 'width' is zero.

`stty size` needs the TTY as stdin. When you are invoking it from
_function_test, stdin is not a TTY. Use $COLUMNS instead. There is
also $LINES if you need height.

    width=$COLUMNS

Roman.