git-pr.sh

#!/usr/bin/env bash

# get the upstream repository username
upstream_repo=$(git config remote.upstream.url | sed 's/^.*://' | sed 's/\/.*$//')

# open the PR against develop, or another branch specified as the first command-line argument
upstream_branch=${1:-develop}

# branch
branch=$(git symbolic-ref HEAD | sed 's/refs\/heads\///')

# make sure it's pushed
git push origin "$branch" || exit "failed to push $branch"

# get the user/project name
project=$(git config remote.origin.url | sed 's/^.*://' | sed 's/\.git$//')

# Assume that the HTTP website is the same as the git host.. works for
# gitlab, github and much more
githost=$(git config remote.origin.url | sed 's/:.*$//' | sed 's/.*\@//')

if [ "$githost" == "" ]
then
        echo "No host detected"
        exit 1
fi

# create pull request
firefox "https://${githost}/${project}/compare/$upstream_repo:$upstream_branch...$branch"