isabella 1671529888 learn # a=([1]=); x=7; echo ${a[x==7]+true}${a[!(x==7)]+false}
ormaaj 1709867003 forget
ormaaj 1709867019 learn +# ${| return 42; }; printf '%s is %s and that last command returned %d!\n' "${| s=$? REPLY='3 * 7'; let REPLY; }" ${PPID[!!$?]+'true'}${PPID[!$?]+'false'} "$s"