This is a follow-up on https://emacs.stackexchange.com/q/68016/23319.

I learned that forms (or rather its elements) in Emacs are called widgets and I am now experimenting on how I can get the best result for what I like to build.

Since some `editable-field` values shall be used with some (external) commands and evaluated to fill other fields, I wonder if one could limit the ":notify" property (or something similar) to only trigger when exiting the field (e.g. when pressing <kbd>TAB</kbd> or <kbd>RET</kbd>) rather than on every single character change. This is to reduce the amount the attached command is run to once when I am done with the field.