- # Handle backlinks; if a page has added/removed links, update the
- # pages it links to. Also handles rebuilding dependant pages.
- # TODO: inefficient; pages may get rendered above and again here;
- # problem is the backlinks could be wrong in the first pass render
- # above
- if (%rendered || @del) {
- foreach my $f (@files) {
- my $p=pagename($f);
- if (exists $depends{$p}) {
- foreach my $file (keys %rendered, @del) {
- next if $f eq $file;
- my $page=pagename($file);
- if (pagespec_match($page, $depends{$p})) {
- debug("rendering $f, which depends on $page");
- render($f);
- $rendered{$f}=1;
- last;
+ if (%rendered || @del || @internal) {
+ my @changed;
+ my $changes;
+ do {
+ $changes=0;
+ @changed=(keys %rendered, @del);
+ my %lcchanged = map { lc(pagename($_)) => 1 } @changed;
+
+ # rebuild dependant pages
+ foreach my $f (@$files) {
+ next if $rendered{$f};
+ my $p=pagename($f);
+ my $reason = undef;
+
+ if (exists $depends_simple{$p}) {
+ foreach my $d (keys %{$depends_simple{$p}}) {
+ if (exists $lcchanged{$d}) {
+ $reason = $d;
+ last;
+ }
+ }
+ }
+
+ if (exists $depends{$p} && ! defined $reason) {
+ D: foreach my $d (keys %{$depends{$p}}) {
+ my $sub=pagespec_translate($d);
+ next if $@ || ! defined $sub;
+
+ # only consider internal files
+ # if the page explicitly depends
+ # on such files
+ foreach my $file (@changed, $d =~ /internal\(/ ? @internal : ()) {
+ next if $file eq $f;
+ my $page=pagename($file);
+ if ($sub->($page, location => $p)) {
+ $reason = $page;
+ last D;
+ }
+ }