orphans.sh

#!/bin/sh
OLDIFS=$IFS
IFS=$'\n\t'
for commit in $( git fsck --unreachable HEAD | awk '$2 == "commit" {print substr($3,1,7)}' )
do
    printf "\nGit orphan: ${commit}\n"
    printf "%s\n" $( TZ=UTC git log -1 --date=iso-local --pretty=format:"parents: %<(24)%porphan: %<(10)%h%<(30)%an%<(26)%ad%s" ${commit} )
    parents=()
    IFS=$' \n\t'
    for parent in $( git log -1 --pretty=format:"%p" ${commit} )
    do
        IFS=$'\n\t'
        parent_result="$( TZ=UTC git log --date=iso-local --pretty=format:"parents: %<(24)%pcommit: %<(10)%h%<(30)%an%<(26)%ad%s" HEAD | grep "$parent\|$commit" )"
        if [[ ${#parent_result} -gt 0 ]]
        then
            for i in ${parent_result[@]}
            do
            	parents+=( "${i}" )
            done
        else
            parents+=( "<parent ${parent} is also orphaned>" )
        fi
    done
    IFS=$'\n\t'
    # this is super hacky
    for line in ${parents[@]}
    do
        printf "%s\n" ${line}
    done
done
IFS=$OLDIFS