> On Jul 7, 2021, at 10:38 PM, lisa-as...@perso.be wrote:
>
> Correct. How do others customarily use `${fdir:=$PWD}` ?
The common idiom is
: "${fdir:=$PWD}"
The ':' utility is used because it does nothing, but its arguments
are expanded as usual.
> I'd rather understand what's going on, rather than simply never use it.
Think about what is happening here:
fdir=${fdir:=$PWD}
This is conceptually equivalent to
if [[ -z "$fdir" ]]; then
fdir="$PWD"
fi
fdir="$fdir"
I hope you can see why this is a pointless thing to do.
--
vq
