antlr/.travis/before-install-osx-swift.sh

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#!/bin/bash
set -euo pipefail
thisdir=$(dirname "$0")
brew update
# Work around apparent rvm bug that is in Travis's Xcode image.
# https://github.com/direnv/direnv/issues/210
# https://github.com/travis-ci/travis-ci/issues/6307
shell_session_update() { :; }