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#!/usr/bin/env bash
# Summary: Display prefix for a Ruby version
# Usage: rbenv prefix [<version>]
#
# Displays the directory where a Ruby version is installed. If no
# version is given, `rbenv prefix' displays the location of the
# currently selected version.
set -e
[ -n "$RBENV_DEBUG" ] && set -x
# Provide rbenv completions
if [ "$1" = "--complete" ]; then
echo system
exec rbenv-versions --bare
fi
if [ -n "$1" ]; then
export RBENV_VERSION="$1"
elif [ -z "$RBENV_VERSION" ]; then
RBENV_VERSION="$(rbenv-version-name)"
fi
if [ "$RBENV_VERSION" = "system" ]; then
if RUBY_PATH="$(rbenv-which ruby)"; then
RUBY_PATH="${RUBY_PATH%/*}"
RBENV_PREFIX_PATH="${RUBY_PATH%/bin}"
echo "${RBENV_PREFIX_PATH:-/}"
exit
else
echo "rbenv: system version not found in PATH" >&2
exit 1
fi
fi
RBENV_PREFIX_PATH="${RBENV_ROOT}/versions/${RBENV_VERSION}"
if [ ! -d "$RBENV_PREFIX_PATH" ]; then
echo "rbenv: version \`${RBENV_VERSION}' not installed" >&2
exit 1
fi
echo "$RBENV_PREFIX_PATH"
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