A script to create releases on github because Travis doesn't like newline chars in its release bodies.

travis-github-release.sh

#!/bin/bash

# MIT License
# 
# Copyright (c) 2018 James Fenn
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

# This is my script to create github releases. There are many like it, but this one is mine.
#
# Here are some other scripts with similar functionality, if you are curious:
# - https://gist.github.com/stefanbuck/ce788fee19ab6eb0b4447a85fc99f447
# - https://gist.github.com/Jaskaranbir/d5b065173b3a6f164e47a542472168c1
# 
# The main purpose of this script is to publish multi-line release bodies from Travis CI.
# The reason that Travis's implementation cannot do this is explained in an issue here:
#     https://github.com/travis-ci/dpl/issues/155
#
# Since I already have to specify the changelog in a file inside the repo, there is no point
# in manually copying that to the release notes every time I make a release.
# 
# Parameters: (these are environment variables that must be specified before the
#              script is run)
#   - GITHUB_TOKEN:       An authenticated API token with access to the repo.
#   - RELEASE_VERSION:    The version name/number/tag of the release.
#   - RELEASE_CHANGELOG:  The changelog, could be assigned like "$(cat CHANGELOG.md)"
#   - TRAVIS_BRANCH:      The branch of the repository to create a release on. 
#                           Automatically created by Travis. Should normally be "master".
#   - TRAVIS_REPO_SLUG:   The full name of the repository, formatted like "author/repo".
#                           Automatically created by Travis.

# formats data to pass to github api
data=$(jq -n \
  --arg body "$RELEASE_CHANGELOG" \
  --arg name "$RELEASE_VERSION" \
  --arg commitish "$TRAVIS_BRANCH" \
  '{
  	body: $body,
  	name: $name,
  	tag_name: $name,
  	target_commitish: $commitish,
  	draft: false,
  	prerelease: false
  }')

# creates the release...
curl -H "Authorization: token $GITHUB_TOKEN" \
  --data "$data" \
  "https://api.github.com/repos/$TRAVIS_REPO_SLUG/releases"