Merge and then delete traces of feature branch

melt.sh

#!/bin/sh

feature_branch=$(git branch | grep \* | sed 's/\* //')
all_branches=$(git branch | tr '\n' ' ')
main_branch=$1

if [[ $all_branches != *$main_branch* ]]; then
  echo "$main_branch is not a valid branch to merge back into"
  exit 1
fi

exit

if [ $# -ne 1 ]; then
  echo "missing main branch to merge back into"
  exit 1
fi

if [ $feature_branch == $main_branch ]; then
  echo "cannot merge branch into itself"
  exit 1
fi

git checkout $main_branch
git pull
git merge $feature_branch
git push origin $main_branch
git push origin --delete $feature_branch
git branch -D $feature_branch