On Tue, Nov 17, 2020, 1:29 PM Roman Perepelitsa wrote: > > My guess is that you've upgraded macOS, which in turn has caused bash to > downgrade from 5.x to 3.3. > On Catalina bash is actually 3.2.57, it appears. Why on earth ... oh well. ksh is at least from 2012, could experiment running the pre-zsh-ized scripts with that. >