On Thu, 6 Jun 2019 at 03:40, Ilkka Virta <itvi...@iki.fi> wrote:
> On 5.6. 17:05, Chet Ramey wrote:
> > On 6/4/19 3:26 PM, Ilkka Virta wrote:
>
> >> $ echo "$(( 'a[2]' ))"
> >> bash: 'a[2]' : syntax error: operand expected (error token is "'a[2]' ")
> >
> > The expression between the parens is treated as if it were within double
> > quotes, where single quotes are not special.
>
> I did put the double-quotes around the $((...))
Hi Ilkka Virta
In case of any confusion...
Please note no-one is talking about putting double quotes around $((...))
which would be "$((...))"
Regarding $((...)) when Chet refers above to "the expression between the parens"
he means whatever is between the parentheses, in this case the three dots.
If I understand correctly, Chet is saying there that $((...)) is
parsed as if it was written
$(("...")) and therefore any single quotes inside the parentheses are
not special.
