Git command script to merge a single branch into multiple others.

git-merge-all

#!/bin/bash

##############################
# Merge the current branch into multiple other local branches.
#
# TODO: Add the option to pass additional arguments to merge commands
##############################

# Determine the current branch name
source=$(git symbolic-ref HEAD 2> /dev/null) || source=$(git rev-parse --short HEAD 2> /dev/null);
# Strip prefix from branch name
source=${source#refs/heads/};

targets=$*;

for target in $*
do
  git checkout $target;
  if ! git merge --no-ff $source; then
    printf 'Failed to merge "%s" into "%s"\n' $source $target >&2
    exit 1
  fi
  git checkout $source;
done

exit 0;