flag to list duplicate recipes

we have a setting to allow duplicate settings.

For personal projects, I always disallow and fail hard. More and more I started to split generic recipes off from project-related recipes.

the generic non-project user-specific recipes import via this wrapper (until we have globbing supported :) import? '~/.config/just/import.justfile' but the result is obviously different for every user.

I want to allow duplicate recipes, but have more visibility what the duplicates are. to avoid grepping and awking in custom scripts, ideally I'd like to have a diagnostics flag to list them:

something like

just  --list --warnings
just  --list --verbose 
just  --list --duplicates