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if [ -n "${BASH_VERSION-}" -o -n "${KSH_VERSION-}" -o -n "${ZSH_VERSION-}" ]; then
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  [ "`/usr/bin/id -u 2>/dev/null || echo 0`" -le 200 ] && return
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  # for bash and zsh, only if no alias is already set
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  alias vi >/dev/null 2>&1 || alias vi=vim
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fi