On Mon, May 22, 2023 at 07:01:18AM +1000, Martin D Kealey wrote: > [...] and treating "unset" as a fatal error is not the experience that > programmers have using other scripting languages, and is therefore, I would > argue, not something that should be added to the Shell, and certainly not > as a quiet change to the existing `set -u`.
Just for the record, Tcl's unset command generates an error if you use it on a nonexistent variable (which includes a nonexistent array element). But it also offers a -nocomplain option, which you may use if you want to unset something that may or may not currently exist. (End tangent.)
