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# shortens the pwd for use in prompt
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local current_dir="${${1:-${PWD}}/#${HOME}/~}"
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# if we aren't in ~
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if [[ ${current_dir} != '~' ]]; then
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current_dir="${${${${(@j:/:M)${(@s:/:)current_dir}##.#?}:h}%/}//\%/%%}/${${current_dir:t}//\%/%%}"
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fi
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print ${current_dir}
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