Changed debug options:

-d4 now prints compressed trees from nodeToString()
-d5 prints pretty trees via nodeDisplay()

new pg_options: pretty_plan, pretty_parse, pretty_rewritten

Jan

src/include/utils/trace.h

@@ -49,6 +49,9 @@ enum pg_option_enum
 	TRACE_PLAN,
 	TRACE_PARSE,
 	TRACE_REWRITTEN,
+	TRACE_PRETTY_PLAN,			/* indented multiline versions of trees */
+	TRACE_PRETTY_PARSE,
+	TRACE_PRETTY_REWRITTEN,
 	TRACE_PARSERSTATS,
 	TRACE_PLANNERSTATS,
 	TRACE_EXECUTORSTATS,