refs/debug: quote prefix

This makes the empty prefix ("") stand out better.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs/debug.c b/refs/debug.c
index 7db4abccc341b03a3c198633ab7f516bc43c08df..1a7a9e11cfac65eafb9b5e5cd997c5780703707f 100644 (file)
--- a/refs/debug.c
+++ b/refs/debug.c
@@ -232,7 +232,8 @@ debug_ref_iterator_begin(struct ref_store *ref_store, const char *prefix,
        struct debug_ref_iterator *diter = xcalloc(1, sizeof(*diter));
        base_ref_iterator_init(&diter->base, &debug_ref_iterator_vtable, 1);
        diter->iter = res;
-       trace_printf_key(&trace_refs, "ref_iterator_begin: %s (0x%x)\n", prefix, flags);
+       trace_printf_key(&trace_refs, "ref_iterator_begin: \"%s\" (0x%x)\n",
+                        prefix, flags);
        return &diter->base;
 }