git-merge-version-tag.sh

#!/usr/bin/env bash

# Merges the latest release into the current Git branch (based on semver
# tagging).

# Get up to date with origin
git fetch origin &> /dev/null

# Find the latest release tag
release=$(git tag --sort=v:refname | grep "^\\d\{1,2\}\.\\d\{1,2\}\.\\d\{1,4\}\$" | tail -1)

# Error if no versions were found
if [ -z "$release" ]
then
    echo -e "\033[91mNo versions exist in this repository!"
    exit 1
fi

# Merge in the latest release
git merge ${release}