gentoo-overlay/app-misc/run-mailcap/files/run-mailcap-breakrecursion.patch

--- mime-support/run-mailcap.old	2005-08-03 15:36:00.000000000 -0400
+++ mime-support/run-mailcap	2005-08-03 15:37:41.000000000 -0400
@@ -440,7 +440,7 @@
 				$fail++;
 				next;
 			}
-		} elsif ($action eq 'view' && $match =~ m/;\s*copiousoutput\s*($|;)/) {
+		} elsif ($action eq 'view' && $match =~ m/;\s*copiousoutput\s*($|;)/ && $type ne 'text/plain') {
 			$comm .= " | $0 --action=$action text/plain:-";
 		}