pretty format always use ref-filter logic

Using pretty-lib.{c,h} instead on pretty.c
[This commit is only for testing purpose]

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Mentored-by: Heba Waly <heba.waly@gmail.com>
Signed-off-by: Hariom Verma <hariom18599@gmail.com>

log-tree.c

@@ -757,10 +757,7 @@ void show_log(struct rev_info *opt)
 	if (opt->graph)
 		ctx.graph_width = graph_width(opt->graph);
 
-	if (opt->use_ref_filter)
-		ref_pretty_print_commit(&ctx, commit, &msgbuf);
-	else
-		pretty_print_commit(&ctx, commit, &msgbuf);
+	ref_pretty_print_commit(&ctx, commit, &msgbuf);
 
 	if (opt->add_signoff)
 		append_signoff(&msgbuf, 0, APPEND_SIGNOFF_DEDUP);
@@ -772,11 +769,6 @@ void show_log(struct rev_info *opt)
 		strbuf_addstr(&msgbuf, ctx.notes_message);
 	}
 
-	if (opt->show_log_size && !opt->use_ref_filter) {
-		fprintf(opt->diffopt.file, "log size %i\n", (int)msgbuf.len);
-		graph_show_oneline(opt->graph);
-	}
-
 	/*
 	 * Set opt->missing_newline if msgbuf doesn't
 	 * end in a newline (including if it is empty)