From 8fcbf58f2ca41b492aaf0336f118314b0fa69daa Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Mon, 13 Aug 2012 21:56:23 -0400
Subject: Support chapters in sectlink macro.

---
diff --git a/lib/Text/MarkdownBook/Book.pm b/lib/Text/MarkdownBook/Book.pm
index 4c49d1d..4c5f6c7 100644
--- a/lib/Text/MarkdownBook/Book.pm
+++ b/lib/Text/MarkdownBook/Book.pm
@@ -201,7 +201,13 @@ sub _do_subst_macro
 			Carp::carp('Invalid arguments to "sectlink" macro');
 		} else {
 			$sec = $self->{'sections_by_id'}->{$args[0]};
-			return '[§ ' . $sec->number() . '][' . $sec->id() . ']';
+			if (ref($sec) =~ m/^Text::MarkdownBook::Document/) {
+				return '[§ ' . $sec->id() . '][' . $sec->file() . ']';
+			} elsif (ref($sec) eq 'Text::MarkdownBook::Section') {
+				return '[§ ' . $sec->number() . '][' . $sec->id() . ']';
+			} else {
+				Carp::carp("Unknown section \"$args[0]\" in sectlink macro");
+			}
 		}
 	} else {
 		Carp::carp("Unrecognized macro \"$macro\"");
--
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