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-rw-r--r--builtin-diff-index.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/builtin-diff-index.c b/builtin-diff-index.c
index eeeee93fb7..95a3db156b 100644
--- a/builtin-diff-index.c
+++ b/builtin-diff-index.c
@@ -9,13 +9,13 @@ static const char diff_cache_usage[] =
"[<common diff options>] <tree-ish> [<path>...]"
COMMON_DIFF_OPTIONS_HELP;
-int cmd_diff_index(int argc, const char **argv, char **envp)
+int cmd_diff_index(int argc, const char **argv, const char *prefix)
{
struct rev_info rev;
int cached = 0;
int i;
- init_revisions(&rev, setup_git_directory());
+ init_revisions(&rev, prefix);
git_config(git_default_config); /* no "diff" UI options */
rev.abbrev = 0;