GitHub "open PR" script. Add somewhere in your path, then opening a PR is as easy as typing `pr` on the branch you want to open a PR for

pr

#!/usr/bin/env bash

# GitHub "open PR" script
# Add somewhere in your path, then opening a PR is as easy as typing `pr` on the branch you want to opena  PR for
#
# NOTES:
# - If working from a fork, name your fork's remove "origin" and the main repo "upstream"
# - Use pr <branch_name> to open a PR against a branch other than "master". If the default branch is not "master", use `git config pr.defaultbranch <branch_name>` to tell this script the correct branch to use
# - If you're working against a GitHub enterprise instance, set `git config pr.githuburl`

set -e

LOCAL_BRANCH=`git branch | grep ^\* | sed 's/^* //'`
MERGE_BRANCH=$1
BOX=`uname -s`

git push origin $LOCAL_BRANCH

ORIGIN_ORG_NAME=`git config remote.origin.url | sed -E 's/.*:(.*)\/.*/\1/'`
UPSTREAM_ORG_NAME=`git config remote.upstream.url | sed -E 's/.*:(.*)\/.*/\1/'`
REPO_NAME=`git config remote.upstream.url | sed -E 's/.*\/([^\/]*)\.git/\1/'`
GITHUB_URL=`git config pr.github.url`

if [ "$GITHUB_URL" == "" ]; then
    GITHUB_URL=https://github.com
fi

if [ "$MERGE_BRANCH" == "" ]; then
    set +e
    MERGE_BRANCH=`git config pr.defaultbranch`
    if [ "$MERGE_BRANCH" == "" ]; then
        MERGE_BRANCH=master
    fi
    set -e
fi

if [ "$ORIGIN_ORG_NAME" == "" ]; then
    echo Cannot divine the origin organisation name. Ensure you have a remote called "origin"
    exit 1
fi
if [ "$UPSTREAM_ORG_NAME" == "" ]; then
    UPSTREAM_ORG_NAME=$ORIGIN_ORG_NAME
fi
if [ "$REPO_NAME" == "" ]; then
    REPO_NAME=`git config remote.origin.url | sed -E 's/.*\/([^\/]*)\.git/\1/'`
fi

URL=$GITHUB_URL/$UPSTREAM_ORG_NAME/$REPO_NAME/pull/new/$MERGE_BRANCH...$ORIGIN_ORG_NAME:$LOCAL_BRANCH

echo Opening $URL
if [ "$BOX" == "Linux" ]; then
    xdg-open $URL > /dev/null
elif [ "$BOX" == "Darwin" ]; then
    open $URL
else
    echo Are you using Windows??? Come oooon!
    explorer.exe $URL
fi