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Cmd+backspace is delete text to beginning of the line in most places in macos, including when renaming a file in Finder.
HOWEVER, if you're renaming a file via the desktop, then the "Move to bin" action kicks in instead.
This is a brand new server run by the main developers of the project as a spin-off of mastodon.social 
It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!