Add a way to toggle debug mode in Fish shell #3427
Description
Based from How to toggle debug mode in Fish shell?
754A Bash legacy
In bash I do set -x and set +x enable/disable the debug mode in a limited scope.
I'm aware of how to debug fish script?, but I would like to toggle debug mode in a more precise way, e.g. inside a function.
Question
What is the equivalent of set -x/set -x in Fish shell?
Would you mind implementing such future?