make_rc.sh
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	#!/bin/bash
	#
	# Script to help generate a new release candidate. This assumes that
	# the master branch is checked out and the working directory is clean.
	#
	# To confirm changes before checking them in, replace the -A option
	# to "git add" below with -p.
	#

	# Update the following two variables before running this script.
	VERSION=0.9.0
	RC_NUM=1

	RC_NUMBER=RC${RC_NUM}
	NEXT_RC_NUMBER=RC$((${RC_NUM} + 1))
	RC_VERSION=${VERSION}-${RC_NUMBER}

	git checkout ${VERSION}-staging

	# Modify version string from SNAPSHOT to RC.
	test $RC_NUM = 1 && FROM=${VERSION}-SNAPSHOT \|\| FROM=${RC_VERSION}-SNAPSHOT
	TO=$RC_VERSION

	FILES="`grep -rl -- -SNAPSHOT *`"

	echo "$FILES" \| xargs sed -i "s/$FROM/$TO/"
	git add -A
	git commit -m "[release] mark ${VERSION} ${RC_NUMBER}"

	# Now create a tag that we can reference on GitHub.
	git tag $RC_VERSION

	# Modify version string from RC to the next RC snapshot. Now fixes
	# that come in during testing can be picked back here for files that
	# need updating.
	FROM=$RC_VERSION
	TO=${VERSION}-${NEXT_RC_NUMBER}-SNAPSHOT
	echo "$FILES" \| xargs sed -i "s/$FROM/$TO/"
	git add -A
	git commit -m "[release] update version for ${NEXT_RC_NUMBER}"

	# Finally push all of this up to GitHub.
	git push origin ${VERSION}-staging $RC_VERSION