On Wed, Jan 27, 2021 at 12:14 PM Clark Wang <dearv...@gmail.com> wrote:
> For example, we can use ${( ... )} which is now wrong syntax. > > $ v=${( command ... )} > bash: ${( command ... )}: bad substitution > Or keep it similar to $(cmd), like: $(& cmd ...) $(; cmd ...) $(| cmd ...)