Adds a new hook to tweak command description at runtime #10
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For one feature I'm currently implementing I need to be able to tweak a command description based on some runtime information. My main use case is to customize the description (basically rendering it as a template but with some context values that we can't provide generically). So I ended up with this solution.
The idea is to allow one to register a hook that will be called during command help rendering to compute the command description.