git-rebase-default

#!/bin/bash

# Copyright (c) 2021 Benjamin Holt -- MIT License

set -e  # Stop-on-error
# set -x  # Uncomment for debugging

if [ "$1" == "-h" -o "$1" == "--help" ]; then
    cat <<USAGE
usage: git rebase-default [REMOTE]    Rebase the current branch on the
                                      default branch of REMOTE ('origin'
                                      by default)
       git rebase-default -h|--help   Print this message and exit

notes:
    If the remote default branch has changed since this clone was made,
    run 'git remote set-head REMOTE --auto'

config:
    git config bettergit.defaultremote REMOTE   Set the default remote
USAGE
    exit 0
fi

Bold=`tput bold`
Off=`tput sgr0`

Remote="$1"
if [ -z "$Remote" ]; then
    ConfigRemote=`git config bettergit.defaultremote || echo ""`
    Remote=${ConfigRemote:-"origin"}  # REM: maybe use the first remote by default? `git remote | head -n1`
fi

Other=`git symbolic-ref refs/remotes/${Remote}/HEAD | sed -e 's:^refs/remotes/::'`

echo "${Bold}Rebasing onto ${Other}${Off}"
git rebase "$Other"

###