static int skip_first_line;
 
 static void add_work(struct grep_opt *opt, enum grep_source_type type,
-                    const char *name, const void *id)
+                    const char *name, const char *path, const void *id)
 {
        grep_lock();
 
                pthread_cond_wait(&cond_write, &grep_mutex);
        }
 
-       grep_source_init(&todo[todo_end].source, type, name, id);
+       grep_source_init(&todo[todo_end].source, type, name, path, id);
        if (opt->binary != GREP_BINARY_TEXT)
                grep_source_load_driver(&todo[todo_end].source);
        todo[todo_end].done = 0;
 }
 
 static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
-                    const char *filename, int tree_name_len)
+                    const char *filename, int tree_name_len,
+                    const char *path)
 {
        struct strbuf pathbuf = STRBUF_INIT;
 
        if (opt->relative && opt->prefix_length) {
-               quote_path_relative(filename + tree_name_len, -1, &pathbuf,
-                                   opt->prefix);
+               quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf);
                strbuf_insert(&pathbuf, 0, filename, tree_name_len);
        } else {
                strbuf_addstr(&pathbuf, filename);
 
 #ifndef NO_PTHREADS
        if (use_threads) {
-               add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, sha1);
+               add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1);
                strbuf_release(&pathbuf);
                return 0;
        } else
                struct grep_source gs;
                int hit;
 
-               grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, sha1);
+               grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1);
                strbuf_release(&pathbuf);
                hit = grep_source(opt, &gs);
 
        struct strbuf buf = STRBUF_INIT;
 
        if (opt->relative && opt->prefix_length)
-               quote_path_relative(filename, -1, &buf, opt->prefix);
+               quote_path_relative(filename, opt->prefix, &buf);
        else
                strbuf_addstr(&buf, filename);
 
 #ifndef NO_PTHREADS
        if (use_threads) {
-               add_work(opt, GREP_SOURCE_FILE, buf.buf, filename);
+               add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename);
                strbuf_release(&buf);
                return 0;
        } else
                struct grep_source gs;
                int hit;
 
-               grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename);
+               grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
                strbuf_release(&buf);
                hit = grep_source(opt, &gs);
 
        read_cache();
 
        for (nr = 0; nr < active_nr; nr++) {
-               struct cache_entry *ce = active_cache[nr];
+               const struct cache_entry *ce = active_cache[nr];
                if (!S_ISREG(ce->ce_mode))
                        continue;
                if (!match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL))
                if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) {
                        if (ce_stage(ce))
                                continue;
-                       hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
+                       hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name);
                }
                else
                        hit |= grep_file(opt, ce->name);
 }
 
 static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
-                    struct tree_desc *tree, struct strbuf *base, int tn_len)
+                    struct tree_desc *tree, struct strbuf *base, int tn_len,
+                    int check_attr)
 {
        int hit = 0;
        enum interesting match = entry_not_interesting;
                strbuf_add(base, entry.path, te_len);
 
                if (S_ISREG(entry.mode)) {
-                       hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len);
+                       hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len,
+                                        check_attr ? base->buf + tn_len : NULL);
                }
                else if (S_ISDIR(entry.mode)) {
                        enum object_type type;
 
                        strbuf_addch(base, '/');
                        init_tree_desc(&sub, data, size);
-                       hit |= grep_tree(opt, pathspec, &sub, base, tn_len);
+                       hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
+                                        check_attr);
                        free(data);
                }
                strbuf_setlen(base, old_baselen);
                       struct object *obj, const char *name)
 {
        if (obj->type == OBJ_BLOB)
-               return grep_sha1(opt, obj->sha1, name, 0);
+               return grep_sha1(opt, obj->sha1, name, 0, NULL);
        if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
                struct tree_desc tree;
                void *data;
                        strbuf_addch(&base, ':');
                }
                init_tree_desc(&tree, data, size);
-               hit = grep_tree(opt, pathspec, &tree, &base, base.len);
+               hit = grep_tree(opt, pathspec, &tree, &base, base.len,
+                               obj->type == OBJ_COMMIT);
                strbuf_release(&base);
                free(data);
                return hit;
                unsigned char sha1[20];
                /* Is it a rev? */
                if (!get_sha1(arg, sha1)) {
-                       struct object *object = parse_object(sha1);
-                       if (!object)
-                               die(_("bad object %s"), arg);
+                       struct object *object = parse_object_or_die(sha1, arg);
+                       if (!seen_dashdash)
+                               verify_non_filename(prefix, arg);
                        add_object_array(object, arg, &list);
                        continue;
                }