Zsh Mailing List Archive
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Re: symlink chain.

Another little gotcha:

   $ whence -s /usr/bin/zsh
   /usr/bin/zsh -> /usr/local/bin/zsh-5.0.7-165-g2194da1

   $ whence -sa /usr/bin/zsh
   (nothing)


... why would the '-a' switch kill the '-s' switch?

But only sometimes:

   $ whence -as zsh

   /usr/local/bin/zsh -> /usr/local/bin/zsh-5.0.7-165-g2194da1
   /usr/bin/zsh -> /usr/local/bin/zsh-5.0.7-165-g2194da1
   /bin/zsh -> /usr/local/bin/zsh-5.0.7-165-g2194da1

... with the broader search pattern, '-as' is happy to show the symlink.
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