brew cask install kdiff3
Error: Cask 'kdiff3' is unavailable: No Cask with this name exists.
brew install kdiff3
Error: No available formula with the name "kdiff3"
==> Searching for a previously deleted formula (in the last month)...
Warning: homebrew/core is shallow clone. To get complete history run:
git -C "$(brew --repo homebrew/core)" fetch --unshallow
Error: No previously deleted formula found.
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
==> Searching taps...
==> Searching taps on GitHub... …
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