#!/usr/bin/bash

function dshow {
    git show $1 | eat-diff-numbers
}

function comp {
    local b="/tmp/[b-$3]-$(git log --format=%f -n 1 $2).patch"
    dshow $2 > $b
    dshow $(git-find-subj $1 $2 || echo "NOT FOUND") > /tmp/a.patch
    if ! diff /tmp/a.patch $b > /dev/null ; then
        co=$(git log --format=%s -n 1 $c)
        echo -n $co - differs | tee -a loglog
        echo "/tmp/a.patch - found in $1: "
        echo "$b - $c from current branch"
        echo "type exit to continue"
        #git diff --no-index --color-words --word-diff-regex=. /tmp/{a,b}.patch
        if vimdiff  < /dev/tty -c 0 /tmp/a.patch $b ; then
            echo " - ok" | tee -a loglog
        else
            echo " - bad" | tee -a loglog
        fi
        return 1
    fi
}

rm loglog logcur
a=0
git log $2 --format="%h" --reverse | while read c; do
    ((a++))
    co=$(git log --format=%s -n 1 $c)
    git log -n 1 $c > logcur
    if comp $1 $c $a; then
        echo $co - ok | tee -a loglog
    fi
done