Re: Bash PS4 and indirection level

[Kevin Shell]

On Tue, Nov 17, 2020 at 09:12:52AM -0500, Chet Ramey wrote:
> On 11/17/20 8:12 AM, Kevin Shell wrote:
> > Hello bash list.
> >
> > What constitutes a level of indirection?
> > The bash manual says the first character of $PS4
> > indicates one level of indirection but says nothing
> > about what constitutes an indirection level.
> >
> > I found the eval command constitutes one indirection level.
>
> Yes, it's essentially a measure of command nesting.
>
Is it mean the command will be processed
by the bash lexer/parser one time per indirection level?

>
--
kevin