Thanks for adding the feature request Andi!

I think my script above is broken with multiline values, to account for that, I'll be joining fields with the null character (and hope it's both part of the content itself), then using xargs to pass them as arguments to op item edit:

```sh
function edit_item_args () {
# reads the existing op item into $remote
# then grabs all field names to delete

jq -j -r --exit-status \
--argjson remote "$(op item get "some-item")" \
'def fields_to_cli($delete_field_names):
map(
(.section.id // "") + (if .section then "." else "" end) + (.label | gsub("\."; "\."))+
"["+(if .purpose == "PASSWORD" then "password" else "text" end)+"]="+.value
) +
($delete_field_names | map((.| gsub("\."; "\."))+"[delete]=")) |
sort |
join("\u0000");

(($remote.fields | map(.id // .label)) - map(.id // .label)) as $to_delete |
fields_to_cli($to_delete)' "$1"

}

finally, call our function, pipe to xargs and hope for the best!

edit_item_args <(jq '.fields + [{
id: "my-new-field",
type: "STRING",
purpose: "",
label: "my-new-field",
value: "very secret",
}]' op item get "some-item") | xargs -0 -r op item edit "some-item" --
```

Still not ideal, but it gets the job done :)