Homebrew description provides not working instruction

[tbille]

When installing from homebrew autojump, the first step is to add those lines to our bash/zsh files:

Add the following line to your ~/.bash_profile or ~/.zshrc file:
    [ -f $HOMEBREW_PREFIX/etc/profile.d/autojump.sh ] && . $HOMEBREW_PREFIX/etc/profile.d/autojump.sh

$HOMEBREW_PREFIX is not setup by default

For a more reliable option the documentation can use this:

Add the following line to your ~/.bash_profile or ~/.zshrc file:
    [ -f "$(brew --prefix)/etc/profile.d/autojump.sh" ] && . "$(brew --prefix)/etc/profile.d/autojump.sh"