Re: How does quote removal work with alternative forms of parameter expansion?

[Philippe Cerfon]

On Sun, May 26, 2024 at 6:18 PM Philippe Cerfon <philcerf@gmail.com> wrote:
> But now, using one of the :- :+ etc forms:
>      x            |   invocation    |   output
> x="${1:-$bar}"    |  bash x.sh ""   |   expanded
> x="${1:-"$bar"}"  |  bash x.sh ""   |   expanded
> x="${1:-'$bar'}"  |  bash x.sh ""   |   'expanded'  => why not quote
> removal, why expansion?
> x="${1:-$'$bar'}" |  bash x.sh ""   |   expanded    => why expansion?
> x="${1:-\$bar}"   |  bash x.sh ""   |   $bar


> x=${1:-$bar}"     |  bash x.sh ""   |   expanded
> x="${1:-"$bar"}   |  bash x.sh ""   |   expanded

Those two should have been without the lone outer ", that is:
x=${1:-$bar}     |  bash x.sh ""   |   expanded
x=${1:-"$bar"}   |  bash x.sh ""   |   expanded

> x=${1:-'$bar'}    |  bash x.sh ""   |   $bar
> x=${1:-$'$bar'}   |  bash x.sh ""   |   $bar
> x=${1:-\$bar}     |  bash x.sh ""   |   $bar