diff --git a/IkiWiki.pm b/IkiWiki.pm
index 7adc63139..39a43ddbe 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -1795,8 +1795,10 @@ sub add_depends ($$;@) {
 	return if $@;
 	foreach my $p (keys %pagesources) {
 		my $r=$sub->($p, location => $page );
-		map { $depends_simple{$page}{lc $_} |= $DEPEND_CONTENT } $r->influences
-			if $r;
+		my %i=$r->influences;
+		foreach my $i (keys %i) {
+			$depends_simple{$page}{lc $i} |= $i{$i};
+		}
 	}
 
 	$depends{$page}{$pagespec} |= $deptype;
@@ -1998,8 +2000,8 @@ use overload (
 	'""'	=> sub { $_[0][0] },
 	'0+'	=> sub { 0 },
 	'!'	=> sub { bless $_[0], 'IkiWiki::SuccessReason'},
-	'&'	=> sub { $_[0][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[0] },
-	'|'	=> sub { $_[1][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[1] },
+	'&'	=> sub { $_[0]->merge_influences($_[1]); $_[0] },
+	'|'	=> sub { $_[1]->merge_influences($_[0]); $_[1] },
 	fallback => 1,
 );
 
@@ -2011,19 +2013,27 @@ use overload (
 	'""'	=> sub { $_[0][0] },
 	'0+'	=> sub { 1 },
 	'!'	=> sub { bless $_[0], 'IkiWiki::FailReason'},
-	'&'	=> sub { $_[1][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[1] },
-	'|'	=> sub { $_[0][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[0] },
+	'&'	=> sub { $_[1]->merge_influences($_[0]); $_[1] },
+	'|'	=> sub { $_[0]->merge_influences($_[1]); $_[0] },
 	fallback => 1,
 );
 
 sub new {
 	my $class = shift;
 	my $value = shift;
-	return bless [$value, {map { $_ => 1 } @_}], $class;
+	return bless [$value, {@_}], $class;
 }
 
 sub influences {
-	return keys %{$_[0][1]};
+	return %{$_[0][1]};
+}
+
+sub merge_influences {
+	my $this=shift;
+	my $other=shift;
+	foreach my $influence (keys %{$other->[1]}) {
+		$this->[1]{$influence} |= $other->[1]{$influence};
+	}
 }
 
 package IkiWiki::ErrorReason;
@@ -2079,23 +2089,24 @@ sub match_link ($$;@) {
 	my $from=exists $params{location} ? $params{location} : '';
 
 	my $links = $IkiWiki::links{$page};
-	return IkiWiki::FailReason->new("$page has no links", $page) unless $links && @{$links};
+	return IkiWiki::FailReason->new("$page has no links", $page => $IkiWiki::DEPEND_LINKS)
+		unless $links && @{$links};
 	my $bestlink = IkiWiki::bestlink($from, $link);
 	foreach my $p (@{$links}) {
 		if (length $bestlink) {
-			return IkiWiki::SuccessReason->new("$page links to $link", $page)
+			return IkiWiki::SuccessReason->new("$page links to $link", $page => $IkiWiki::DEPEND_LINKS)
 				if $bestlink eq IkiWiki::bestlink($page, $p);
 		}
 		else {
-			return IkiWiki::SuccessReason->new("$page links to page $p matching $link", $page)
+			return IkiWiki::SuccessReason->new("$page links to page $p matching $link", $page => $IkiWiki::DEPEND_LINKS)
 				if match_glob($p, $link, %params);
 			my ($p_rel)=$p=~/^\/?(.*)/;
 			$link=~s/^\///;
-			return IkiWiki::SuccessReason->new("$page links to page $p_rel matching $link", $page)
+			return IkiWiki::SuccessReason->new("$page links to page $p_rel matching $link", $page => $IkiWiki::DEPEND_LINKS)
 				if match_glob($p_rel, $link, %params);
 		}
 	}
-	return IkiWiki::FailReason->new("$page does not link to $link", $page);
+	return IkiWiki::FailReason->new("$page does not link to $link", $page => $IkiWiki::DEPEND_LINKS);
 }
 
 sub match_backlink ($$;@) {
@@ -2111,14 +2122,14 @@ sub match_created_before ($$;@) {
 
 	if (exists $IkiWiki::pagectime{$testpage}) {
 		if ($IkiWiki::pagectime{$page} < $IkiWiki::pagectime{$testpage}) {
-			return IkiWiki::SuccessReason->new("$page created before $testpage", $testpage);
+			return IkiWiki::SuccessReason->new("$page created before $testpage", $testpage => $IkiWiki::DEPEND_PRESENCE);
 		}
 		else {
-			return IkiWiki::FailReason->new("$page not created before $testpage", $testpage);
+			return IkiWiki::FailReason->new("$page not created before $testpage", $testpage => $IkiWiki::DEPEND_PRESENCE);
 		}
 	}
 	else {
-		return IkiWiki::ErrorReason->new("$testpage does not exist", $testpage);
+		return IkiWiki::ErrorReason->new("$testpage does not exist", $testpage => $IkiWiki::DEPEND_PRESENCE);
 	}
 }
 
@@ -2131,14 +2142,14 @@ sub match_created_after ($$;@) {
 
 	if (exists $IkiWiki::pagectime{$testpage}) {
 		if ($IkiWiki::pagectime{$page} > $IkiWiki::pagectime{$testpage}) {
-			return IkiWiki::SuccessReason->new("$page created after $testpage", $testpage);
+			return IkiWiki::SuccessReason->new("$page created after $testpage", $testpage => $IkiWiki::DEPEND_PRESENCE);
 		}
 		else {
-			return IkiWiki::FailReason->new("$page not created after $testpage", $testpage);
+			return IkiWiki::FailReason->new("$page not created after $testpage", $testpage => $IkiWiki::DEPEND_PRESENCE);
 		}
 	}
 	else {
-		return IkiWiki::ErrorReason->new("$testpage does not exist", $testpage);
+		return IkiWiki::ErrorReason->new("$testpage does not exist", $testpage => $IkiWiki::DEPEND_PRESENCE);
 	}
 }
 
diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
index a8ee5bc85..c160e7eba 100644
--- a/IkiWiki/Plugin/meta.pm
+++ b/IkiWiki/Plugin/meta.pm
@@ -291,14 +291,14 @@ sub match {
 
 	if (defined $val) {
 		if ($val=~/^$re$/i) {
-			return IkiWiki::SuccessReason->new("$re matches $field of $page", $page);
+			return IkiWiki::SuccessReason->new("$re matches $field of $page", $page => $IkiWiki::DEPEND_CONTENT);
 		}
 		else {
-			return IkiWiki::FailReason->new("$re does not match $field of $page", $page);
+			return IkiWiki::FailReason->new("$re does not match $field of $page", $page => $IkiWiki::DEPEND_CONTENT);
 		}
 	}
 	else {
-		return IkiWiki::FailReason->new("$page does not have a $field", $page);
+		return IkiWiki::FailReason->new("$page does not have a $field", $page => $IkiWiki::DEPEND_CONTENT);
 	}
 }
 
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 6b47033e5..232430079 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -982,9 +982,9 @@ an IkiWiki::FailReason object if the match fails. If the match cannot be
 attempted at all, for any page, it can instead return an
 IkiWiki::ErrorReason object explaining why.
 
-When constructing these objects, you should also include a list of any
-pages whose contents or other metadata influenced the result of the match.
-For example, "backlink(foo)" is influenced by the contents of page foo;
+When constructing these objects, you should also include information about
+of any pages whose contents or other metadata influenced the result of the
+match. For example, "backlink(foo)" is influenced by the contents of page foo;
 "link(foo)" and "title(bar)" are influenced by the contents of any
 page they match; "created_before(foo)" is influenced by the metadata of
 foo; while "glob(*)" is not influenced by the contents of any page.
diff --git a/docwiki.setup b/docwiki.setup
index 52421e501..41c07f024 100644
--- a/docwiki.setup
+++ b/docwiki.setup
@@ -16,5 +16,5 @@ use IkiWiki::Setup::Standard {
 	userdir => "users",
 	usedirs => 0,
 	prefix_directives => 1,
-	add_plugins => [qw{goodstuff version haiku polygen fortune}],
+	add_plugins => [qw{linkmap goodstuff version haiku polygen fortune}],
 }
diff --git a/t/add_depends.t b/t/add_depends.t
index d49aa74ce..9f426187b 100755
--- a/t/add_depends.t
+++ b/t/add_depends.t
@@ -57,17 +57,17 @@ ok($IkiWiki::depends{foo0}{"*"} & ($IkiWiki::DEPEND_CONTENT | $IkiWiki::DEPEND_L
 ok(! ($IkiWiki::depends{foo0}{"*"} & $IkiWiki::DEPEND_PRESENCE));
 
 # Adding a pagespec that requires page metadata should add the influence
-# as an explicit content dependency.
+# as an explicit dependency. In the case of a link, a links dependency.
 $links{foo0}=$links{foo9}=[qw{bar baz}];
 foreach my $spec ("* and ! link(bar)", "* or link(bar)") {
 	ok(add_depends("foo3", $spec, presence => 1));
 	ok($IkiWiki::depends{foo3}{$spec} & $IkiWiki::DEPEND_PRESENCE);
 	ok(! ($IkiWiki::depends{foo3}{$spec} & ($IkiWiki::DEPEND_CONTENT | $IkiWiki::DEPEND_LINKS)));
-	ok($IkiWiki::depends_simple{foo3}{foo3} == $IkiWiki::DEPEND_CONTENT);
+	ok($IkiWiki::depends_simple{foo3}{foo3} == $IkiWiki::DEPEND_LINKS);
 	ok(add_depends("foo4", $spec, links => 1));
 	ok($IkiWiki::depends{foo4}{$spec} & $IkiWiki::DEPEND_LINKS);
 	ok(! ($IkiWiki::depends{foo4}{$spec} & ($IkiWiki::DEPEND_CONTENT | $IkiWiki::DEPEND_PRESENCE)));
-	ok($IkiWiki::depends_simple{foo4}{foo4} == $IkiWiki::DEPEND_CONTENT);
+	ok($IkiWiki::depends_simple{foo4}{foo4} == $IkiWiki::DEPEND_LINKS);
 }
 
 # a pagespec with backlinks() will add as an influence the page with the links
@@ -76,20 +76,20 @@ foreach my $spec ("bugs or (backlink(foo0) and !*.png)", "backlink(foo)") {
 	ok(add_depends("foo5", $spec, presence => 1));
 	ok($IkiWiki::depends{foo5}{$spec} & $IkiWiki::DEPEND_PRESENCE);
 	ok(! ($IkiWiki::depends{foo5}{$spec} & ($IkiWiki::DEPEND_CONTENT | $IkiWiki::DEPEND_LINKS)));
-	ok($IkiWiki::depends_simple{foo5}{foo0} == $IkiWiki::DEPEND_CONTENT);
+	ok($IkiWiki::depends_simple{foo5}{foo0} == $IkiWiki::DEPEND_LINKS);
 	ok(add_depends("foo6", $spec, links => 1));
 	ok($IkiWiki::depends{foo6}{$spec} & $IkiWiki::DEPEND_LINKS);
 	ok(! ($IkiWiki::depends{foo6}{$spec} & ($IkiWiki::DEPEND_PRESENCE | $IkiWiki::DEPEND_CONTENT)));
-	ok($IkiWiki::depends_simple{foo5}{foo0} == $IkiWiki::DEPEND_CONTENT);
+	ok($IkiWiki::depends_simple{foo5}{foo0} == $IkiWiki::DEPEND_LINKS);
 	ok(add_depends("foo7", $spec, presence => 1, links => 1));
 	ok($IkiWiki::depends{foo7}{$spec} & $IkiWiki::DEPEND_PRESENCE);
 	ok($IkiWiki::depends{foo7}{$spec} & $IkiWiki::DEPEND_LINKS);
 	ok(! ($IkiWiki::depends{foo7}{$spec} & $IkiWiki::DEPEND_CONTENT));
-	ok($IkiWiki::depends_simple{foo7}{foo0} == $IkiWiki::DEPEND_CONTENT);
+	ok($IkiWiki::depends_simple{foo7}{foo0} == $IkiWiki::DEPEND_LINKS);
 	ok(add_depends("foo8", $spec));
 	ok($IkiWiki::depends{foo8}{$spec} & $IkiWiki::DEPEND_CONTENT);
 	ok(! ($IkiWiki::depends{foo8}{$spec} & ($IkiWiki::DEPEND_PRESENCE | $IkiWiki::DEPEND_LINKS)));
-	ok($IkiWiki::depends_simple{foo8}{foo0} == $IkiWiki::DEPEND_CONTENT);
+	ok($IkiWiki::depends_simple{foo8}{foo0} == $IkiWiki::DEPEND_LINKS);
 }
 
 # content is the default if unknown types are entered
diff --git a/t/pagespec_match.t b/t/pagespec_match.t
index 1a0db1cef..36fa04370 100755
--- a/t/pagespec_match.t
+++ b/t/pagespec_match.t
@@ -93,19 +93,19 @@ $ret=pagespec_match("foo", "bar or foo");
 ok($ret, "simple match");
 is($ret, "foo matches foo", "stringified return");
 
-$ret=pagespec_match("foo", "link(bar)");
-is(join(",", $ret->influences), 'foo', "link is influenced by the page with the link");
-$ret=pagespec_match("bar", "backlink(foo)");
-is(join(",", $ret->influences), 'foo', "backlink is influenced by the page with the link");
-$ret=pagespec_match("bar", "backlink(foo)");
-is(join(",", $ret->influences), 'foo', "backlink is influenced by the page with the link");
-$ret=pagespec_match("bar", "created_before(foo)");
-is(join(",", $ret->influences), 'foo', "created_before is influenced by the comparison page");
-$ret=pagespec_match("bar", "created_after(foo)");
-is(join(",", $ret->influences), 'foo', "created_after is influenced by the comparison page");
-$ret=pagespec_match("bar", "link(quux) and created_after(foo)");
-is(join(",", sort $ret->influences), 'foo,quux', "influences add up over AND");
-$ret=pagespec_match("bar", "link(quux) and created_after(foo)");
-is(join(",", sort $ret->influences), 'foo,quux', "influences add up over OR");
-$ret=pagespec_match("bar", "!link(quux) and !created_after(foo)");
-is(join(",", sort $ret->influences), 'foo,quux', "influences unaffected by negation");
+my %i=pagespec_match("foo", "link(bar)")->influences;
+is(join(",", keys %i), 'foo', "link is influenced by the page with the link");
+%i=pagespec_match("bar", "backlink(foo)")->influences;
+is(join(",", keys %i), 'foo', "backlink is influenced by the page with the link");
+%i=pagespec_match("bar", "backlink(foo)")->influences;
+is(join(",", keys %i), 'foo', "backlink is influenced by the page with the link");
+%i=pagespec_match("bar", "created_before(foo)")->influences;
+is(join(",", keys %i), 'foo', "created_before is influenced by the comparison page");
+%i=pagespec_match("bar", "created_after(foo)")->influences;
+is(join(",", keys %i), 'foo', "created_after is influenced by the comparison page");
+%i=pagespec_match("bar", "link(quux) and created_after(foo)")->influences;
+is(join(",", sort keys %i), 'bar,foo', "influences add up over AND");
+%i=pagespec_match("bar", "link(quux) and created_after(foo)")->influences;
+is(join(",", sort keys %i), 'bar,foo', "influences add up over OR");
+%i=pagespec_match("bar", "!link(quux) and !created_after(foo)")->influences;
+is(join(",", sort keys %i), 'bar,foo', "influences unaffected by negation");