git-ls-blame

#!/usr/bin/env bash

# Parse command line arguments
reverse_sort=""
while getopts "r" opt; do
	case $opt in
		r) reverse_sort="yes" ;;
		*) echo "Usage: $0 [-r]" >&2; exit 1 ;;
	esac
done

# Get all root-level items (files and directories)
items=$(git ls-files | cut -d/ -f1 | sort -u)

# Get current year and 6 months ago timestamp for comparison
six_months_ago=$(date -v-6m +%s 2>/dev/null || date -d '6 months ago' +%s)

# First pass: collect data and find max filename length
max_len=0
declare -a data
while read -r item; do
	[ -z "$item" ] && continue
	display_name="$item"
	[ -d "$item" ] && display_name="$item/"
	
	commit_line=$(git last-modified "$item" 2>/dev/null)
	if [ -n "$commit_line" ]; then
		commit=$(echo "$commit_line" | awk '{print $1}')
		# Get commit info without color for length calculation
		hash=$(git --no-pager log -n 1 --pretty=format:"%h" "$commit" --)
		# Get full date for sorting
		full_date=$(git --no-pager log -n 1 --pretty=format:"%ai" "$commit" --)
		# Get timestamp for comparison
		commit_ts=$(git --no-pager log -n 1 --pretty=format:"%at" "$commit" --)
		
		# Format date like ls -ltrah: show time if recent (within 6 months), year if older
		if [ "$commit_ts" -gt "$six_months_ago" ]; then
			date=$(git --no-pager log -n 1 --pretty=format:"%ad" --date=format:"%b %e %H:%M" "$commit" --)
		else
			date=$(git --no-pager log -n 1 --pretty=format:"%ad" --date=format:"%b %e  %Y" "$commit" --)
		fi
		
		msg=$(git --no-pager log -n 1 --pretty=format:"%s" "$commit" --)
		
		data+=("$display_name|$hash|$full_date|$date|$msg")
		
		# Track max length
		len=${#display_name}
		[ "$len" -gt "$max_len" ] && max_len=$len
	fi
done <<< "$items"

# Determine sort order
sort_opts="-r"
[ -n "$reverse_sort" ] && sort_opts=""

# Second pass: output with aligned columns, sorted by date
(
	for line in "${data[@]}"; do
		IFS='|' read -r name hash full_date date msg <<< "$line"
		printf "%s|%-${max_len}s|%s|%s|%s\n" "$full_date" "$name" "$hash" "$date" "$msg"
	done
) | sort $sort_opts | while IFS='|' read -r _ name hash date msg; do
	printf "\033[32m%-${max_len}s\033[0m \033[33m%s\033[0m %s %s\n" "$name" "$hash" "$date" "$msg"
done