Simple script to fix git submodules inside subtrees

fix_subtree_submodules.sh

#!/bin/bash

find . -name .gitmodules | grep -v './.gitmodules' | while read file;
do
	$dir = `dirname $file`
	git config -f $file --get-regexp '^submodule\..*\.path$' |
	    while read path_key path
	    do
	        url_key=$(echo $path_key | sed 's/\.path/.url/')
	        url=$(git config -f $file --get "$url_key")
	        git submodule add $url $dir/$path
	    done
done

Based on https://stackoverflow.com/questions/11258737/restore-git-submodules-from-gitmodules