shithub: mc

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Add match tree debug option.

--- a/mi/match.c

+++ b/mi/match.c

@@ -724,6 +724,8 @@

 			fatal(pat[i], "pattern matched by earlier case");

 		addcapture(pat[i]->match.block, cap, ncap);

 	}

+	if (debugopt['M'])

+		dtreedump(stdout, start);

 	if (!verifymatch(start))

 		fatal(m, "nonexhaustive pattern set in match statement");

 	return start;