From 1d0dc0e8ed24b2559357203d1be28b6ab069ab59 Mon Sep 17 00:00:00 2001
From: Pierre-Alain Dupont <git@eltrai.net>
Date: Mon, 12 Sep 2016 14:41:55 +0200
Subject: [PATCH] Adds support for submodules

---
 git-latexdiff | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/git-latexdiff b/git-latexdiff
index b6ac0cb..d9eb680 100755
--- a/git-latexdiff
+++ b/git-latexdiff
@@ -528,6 +528,8 @@ fi
 
 # Checkout a subtree, without touching the index ("git checkout" would)
 (cd "$git_dir" && git archive --format=tar "$old" "$checkoutroot") | tar -xf -
+# Also expand the possible submodules
+(cd "$git_worktree" && git submodule foreach 'git archive --format=tar "$sha1" | tar -xf - --directory '$tmpdir/old'/$path')
 verbose_progress
 cd ../new || die "Cannot cd to new/"
 if test "$new" == "--"; then
@@ -536,6 +538,7 @@ if test "$new" == "--"; then
 else
     # checkout new revision
     (cd "$git_dir" && git archive --format=tar "$new" "$checkoutroot") | tar -xf -
+    (cd "$git_worktree" && git submodule foreach 'git archive --format=tar "$sha1" | tar -xf - --directory '$tmpdir/new'/$path')
 fi
 if test "$ln_untracked" = 1; then
     (