best-git-branch.sh

#!/bin/bash

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
NO_COLOR='\033[0m'
BLUE='\033[0;34m'
YELLOW='\033[0;33m'
NO_COLOR='\033[0m'

width0=1
widthN=3
width3=40
width1=5
width2=6
width4=20
width5=40

# Function to count commits
count_commits() {
    local branch="$1"
    local base_branch="$2"
    local ahead_behind

    ahead_behind=$(git rev-list --left-right --count "$base_branch"..."$branch")
    echo "$ahead_behind"
}

# Main script
#main_branch=$(git rev-parse HEAD)
main_branch=$(git show-ref -s origin/master)
current_branch=$(git rev-parse --abbrev-ref HEAD)

printf "  ${NO_COLOR}%${widthN}s ${BLUE}%-${width3}s ${GREEN}%-${width1}s ${RED}%-${width2}s ${YELLOW}%-${width4}s ${NO_COLOR}%-${width5}s\n" "#" "Branch" "Ahead" "Behind" "Last Commit"  "Last Commit Message"

# Separator line for clarity
printf "  ${NO_COLOR}%${widthN}s ${BLUE}%-${width3}s ${GREEN}%-${width1}s ${RED}%-${width2}s ${YELLOW}%-${width4}s ${NO_COLOR}%-${width5}s\n" "---" "----------------------------------------" "-----" "------" "--------------------" "----------------------------------------"


format_string="%(objectname:short)@%(refname:short)@%(committerdate:relative)"
IFS=$'\n'

branches=()
index=0

for branchdata in $(git for-each-ref --sort=-authordate --format="$format_string" refs/heads/ ); do # --no-merged
    sha=$(echo "$branchdata" | cut -d '@' -f1)
    branch=$(echo "$branchdata" | cut -d '@' -f2)
    time=$(echo "$branchdata" | cut -d '@' -f3)

    if [ "$branch" == "$current_branch" ]; then
        main='*'
        commit_message=$(git log --format="%B" -n 1 HEAD)
    else
        main=" "
        commit_message=$(git log --format="%B" -n 1 "$branch")
    fi

    description=$(echo "$commit_message" | head -n 1)
    description=${description:0:80}

    # Count commits ahead and behind
    ahead_behind=$(count_commits "$sha" "$main_branch")
    ahead=$(echo "$ahead_behind" | cut -f2)
    behind=$(echo "$ahead_behind" | cut -f1)

    index=$((index + 1))
    branches+=("$branch")

    # Display branch info
    printf "${NO_COLOR}%-${width0}s ${NO_COLOR}%${widthN}s ${BLUE}%-${width3}s ${GREEN}%-${width1}s ${RED}%-${width2}s ${YELLOW}%-${width4}s ${NO_COLOR}%-${width5}s\n" "$main" "$index" $branch $ahead $behind "$time" "$description"
done

unset IFS

if [ "$index" -eq 0 ]; then
    exit 0
fi

printf "\nEnter row number to checkout (or press Enter to exit): "
read -r selection </dev/tty

if [ -z "$selection" ]; then
    exit 0
fi

if ! [[ "$selection" =~ ^[0-9]+$ ]] || [ "$selection" -lt 1 ] || [ "$selection" -gt "$index" ]; then
    echo "Invalid selection: $selection" >&2
    exit 1
fi

target_branch="${branches[$((selection - 1))]}"
git checkout "$target_branch"

customized https://gist.github.com/schacon/e9e743dee2e92db9a464619b99e94eff (better-git-branch.sh)

changes:

• references against origin/master (instead of current branch)
• prints all branches (including merged)
• marks current branch
• fixed descriptions (last commit message)

• added option to checkout a branch