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-rw-r--r--diff-no-index.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/diff-no-index.c b/diff-no-index.c
index e301aaf..00a8eef 100644
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -215,9 +215,21 @@ void diff_no_index(struct rev_info *revs,
path_inside_repo(prefix, argv[i+1])))
return;
}
- if (argc != i + 2)
+ if (argc != i + 2) {
+ if (!no_index) {
+ /*
+ * There was no --no-index and there were not two
+ * paths. It is possible that the user intended
+ * to do an inside-repository operation.
+ */
+ fprintf(stderr, "Not a git repository\n");
+ fprintf(stderr,
+ "To compare two paths outside a working tree:\n");
+ }
+ /* Give the usage message for non-repository usage and exit. */
usagef("git diff %s <path> <path>",
no_index ? "--no-index" : "[--no-index]");
+ }
diff_setup(&revs->diffopt);
for (i = 1; i < argc - 2; ) {