❯ brew tap "rhysd/hgrep" "https://github.com/rhysd/hgrep"
brew install hgrep
==> Downloading https://github.com/rhysd/hgrep/releases/download/v0.2.1/hgrep-v0.2.1-x86_64-apple-darwin.zip
Already downloaded: /Users/$USER/Library/Caches/Homebrew/downloads/712103ea480f4147dde712234225835a35bc2a2213180120913b81329051bd47--hgrep-v0.2.1-x86_64-apple-darwin.zip
==> Installing hgrep from rhysd/hgrep
Error: Failure while executing; `/Users/$USER/homebrew/Cellar/hgrep/0.2.1/bin/hgrep --generate-completion-script zsh` was terminated by uncaught signal ABRT. Here's the output:
❯ /Users/$USER/homebrew/Cellar/hgrep/0.2.1/bin/hgrep --generate-completion-script zsh
zsh: no such file or directory: /Users/$USER/homebrew/Cellar/hgrep/0.2.1/bin/hgrep