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lang-bash
"${arr[@]/@()/foo.}"(withextglob) which would make it also work in ksh93 (where the${param/pattern/replacement}operator comes from)."${arr[@]/+()/foo.}", or"${arr[@]/?()/foo.}"in ksh/bash, but all will fail in zsh. @StéphaneChazelas@(x),+(x)and?(x)are ksh glob operators whose zsh equivalents are(x),x##and(x|). To use those ksh glob operators inzsh, you'd set thekshgloboption, though you'd probably only do that as part of the ksh emulation to interpret code intended forksh.