Better Git Branch output

better-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'

width1=5
width2=6
width3=30
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)

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

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


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

for branchdata in $(git for-each-ref --sort=-authordate --format="$format_string" refs/heads/ --no-merged); do
    sha=$(echo "$branchdata" | cut -d '@' -f1)
    branch=$(echo "$branchdata" | cut -d '@' -f2)
    time=$(echo "$branchdata" | cut -d '@' -f3)
    if [ "$branch" != "$main_branch" ]; then
            # Get branch description
            description=$(git config branch."$branch".description)
            
            # Count commits ahead and behind
            ahead_behind=$(count_commits "$sha" "$main_branch")
            ahead=$(echo "$ahead_behind" | cut -f2)
            behind=$(echo "$ahead_behind" | cut -f1)
            
            # Display branch info
	    printf "${GREEN}%-${width1}s ${RED}%-${width2}s ${BLUE}%-${width3}s ${YELLOW}%-${width4}s ${NO_COLOR}%-${width5}s\n" $ahead $behind $branch "$time" "$description"
    fi
done

I think if [ "$branch" != "$main_branch" ] will always be True

• main_branch=$(git rev-parse HEAD) will display the commit SHA
• branch will display a string, e.g. dev

because of git for-each-ref --format="$format_string", each line will be abc1234@feature/login@2 days ago, then when we parse branch=$(echo "$branchdata" | cut -d '@' -f2), so branch = feature/login

Fix: main_branch=$(git rev-parse HEAD) --> main_branch=$(git rev-parse --abbrev-ref HEAD)