Indrajit Raychaudhuri c857e809c3 command-not-found: Detect Homebrew repo internally, not idiomatically ...

For performance reasons, we prefer detecting Homebrew prefix internally
instead of the more idiomatic form `brew --repository`.

We attempt looking up $HOMEBREW_REPOSITORY first (in case `brew shellenv`
has been sourced-in earlier). Else, we look it up by resolving absolute
path of $HOMEBREW_REPOSITORY.

This should work for most standard (and officially documented) Homebrew
installations.

2022-04-08 14:23:51 -05:00

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