zshbuiltins(1): Unlike parameter assignment statements, typeset's exit status on an assignemt that involves a command substitution does not reflect the exit status of the command substitution. Therefore, to test for an error in a command substitution, separate the declaration of the parameter from its initialization.
zshbuiltins(1): Unlike parameter assignment statements, typeset's exit status on an assignemt that involves a command substitution does not reflect the exit status of the command substitution. Therefore, to test for an error in a command substitution, separate the declaration of the parameter from its initialization.