Do no colorify test output if stdout is not a terminal

diff --git a/cache-tree.h b/cache-tree.h
index 119407e3a10562166fc61e009613842b213dfcfc..8243228e49ffd7078a783582be6ce79c97541a9c 100644 (file)
--- a/cache-tree.h
+++ b/cache-tree.h
@@ -22,7 +22,7 @@ void cache_tree_free(struct cache_tree **);
 void cache_tree_invalidate_path(struct cache_tree *, const char *);
 struct cache_tree_sub *cache_tree_sub(struct cache_tree *, const char *);
 
-void *cache_tree_write(struct cache_tree *root, unsigned long *size_p);
+void cache_tree_write(struct strbuf *, struct cache_tree *root);
 struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
 
 int cache_tree_fully_valid(struct cache_tree *);