Re: whats wrong with (( a = 8 , a > 4 && a -= 2 || a-- )) , bash: ((: a = 8 , a > 4 && a -= 2 || a-- : attempted assignment to non-variable (error token is "-= 2 || a-- ")

[alex xmb ratchev]

On Thu, Mar 23, 2023, 17:43 Kerin Millar <kfm@plushkava.net> wrote:

> On Thu, 23 Mar 2023 21:36:38 +0530
> Bipul kumar <bipul.opensource@gmail.com> wrote:
>
> > Let me explain here
> > The -= operator performs a compound subtraction and assignment operation,
> > which modifies the value of the variable on the left-hand side of the
> > operator.
> > Also it looks  within a logical expression like this a -= 2 , Bash does
> not
> > allow any left side effects to occur.
> > So in order to make it work as it insists bash to perform in an isolated
> > subshell  only a - = 2  NO ANY OTHER LOGICAL EXPRESSION  Because it's a
>
> There are no subshells involved at any juncture. Perhaps you are confusing
> the use of parentheses inside an arithmetic expression with the (list)
> compound command?
>

compound assignment , he wrote
is small in the docs

and imo i think he just said subshell substituting the ( and ) ' inside '
thing

greets

-- 
> Kerin Millar
>