From 191d640135bcf5904fdb28e93bddc56c2de41b8f Mon Sep 17 00:00:00 2001
From: Matthieu Moy <git@matthieu-moy.fr>
Date: Fri, 22 Sep 2017 17:37:07 +0200
Subject: [PATCH] allow --help to run when called outside a repository

Don't try to run Git commands before having an opportunity to run
'usage' and other help commands.

Fixes #
---
 git-latexdiff | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/git-latexdiff b/git-latexdiff
index d104584..0bedd50 100755
--- a/git-latexdiff
+++ b/git-latexdiff
@@ -198,7 +198,6 @@ bibtex=0
 biber=0
 output=
 initial_dir=$PWD
-initial_repo=$(git rev-parse --show-toplevel)
 tmpdir_prefix="/tmp"
 prepare_cmd=
 flatten=1
@@ -377,6 +376,8 @@ while test $# -ne 0; do
     shift
 done
 
+initial_repo=$(git rev-parse --show-toplevel)
+
 if test -z "$new" ; then
     new=HEAD
 fi