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How can I clear the cache of zsh autocomplete.

E.g. if I do:

> apt-get install rubygems
> gem
zsh: correct 'gem' to 'gdm' [nyae]? % n
RubyGems is a sophisticated package manager for Ruby.  This is a
basic help message containing pointers to more information.

How can I prevent the "correct 'gem' to 'gdm'" part?

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up vote 2 down vote accepted

I think the answer lies with something like hashing. See this StackOverflow answer for more.

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