prepare-commit-msg to add branch name to commit

prepare-commit-msg

#!/bin/sh
# put this in .git/hooks/prepare-commit-msg
# you can customize which branches should be skipped when
# prepending commit message.
if [ -z "$BRANCHES_TO_SKIP" ]; then
  BRANCHES_TO_SKIP=(development)
fi
BRANCH_NAME=$(git symbolic-ref --short HEAD)
BRANCH_NAME="${BRANCH_NAME##*/}"

BRANCH_EXCLUDED=$(printf "%s\n" "${BRANCHES_TO_SKIP[@]}" | grep -c "^$BRANCH_NAME$")
BRANCH_IN_COMMIT=$(grep -c "\[*$BRANCH_NAME\]*" $1)
BRANCH_NAME_IS_TICKET_NUMBER=$(grep -c "[a-zA-Z][a-zA-Z]*[-][0-9][0-9]*" <<< "$BRANCH_NAME")



if [ -n "$BRANCH_NAME" ] && ! [[ $BRANCH_EXCLUDED -eq 1 ]] && ! [[ $BRANCH_IN_COMMIT -ge 1 ]] && [[ $BRANCH_NAME_IS_TICKET_NUMBER -ge 1 ]]; then
  printf "Prepending branch name to commit message...\n"
  sed -i.bak -e "1s/^/[$BRANCH_NAME] /" $1;
fi