support backlink() in pagespecs for links dependencies

[ikiwiki.git] / IkiWiki.pm

diff --git a/IkiWiki.pm b/IkiWiki.pm
index b895e12fc0a924fac01a6ef1b10d58e02dbdb003..78592e6ad2dcd6f8d5db3ebd1086ab5b34a213a4 100644 (file)
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -1776,21 +1776,42 @@ sub add_depends ($$;@) {
        my $simple=$pagespec =~ /$config{wiki_file_regexp}/ &&
                $pagespec !~ /[\s*?()!]/;
 
-       my $deptype=$DEPEND_CONTENT;
+       my $deptype=0;
        if (@_) {
                my %params=@_;
                
-               # Is the pagespec limited to terms that will continue
-               # to match pages as long as those pages exist?
-               my $limited=1;
-               while ($limited && $pagespec=~m/(\w+)\([^\)]*\)/g) {
-                       $limited = $1 =~ /^(glob|internal|creation_month|creation_day|creation_year|created_before|created_after)$/;
+               if ($params{presence}) {
+                       # Is the pagespec limited to terms that will continue
+                       # to match pages as long as those pages exist?
+                       my $presence_limited=1;
+                       while ($presence_limited && $pagespec=~m/(\w+)\([^\)]*\)/g) {
+                               $presence_limited = $1 =~ /^(glob|internal|creation_month|creation_day|creation_year|created_before|created_after)$/;
+                       }
+                       if ($presence_limited) {
+                               $deptype=$deptype | $DEPEND_PRESENCE;
+                       }
+                       else {
+                               $deptype=$deptype | $DEPEND_CONTENT;
+                       }
                }
-
-               $deptype=$deptype & ~$DEPEND_CONTENT | $DEPEND_PRESENCE
-                       if $params{presence} && $limited;
-               $deptype=$deptype & ~$DEPEND_CONTENT | $DEPEND_LINKS
-                       if $params{links} && $limited;
+               if ($params{links}) {
+                       # Is the pagespec limited to terms that will continue
+                       # to match pages as long as those pages exist and
+                       # link to the same places?
+                       my $links_limited=1;
+                       while ($links_limited && $pagespec=~m/(\w+)\([^\)]*\)/g) {
+                               $links_limited = $1 =~ /^(glob|internal|creation_month|creation_day|creation_year|created_before|created_after|backlink)$/;
+                       }
+                       if ($links_limited) {
+                               $deptype=$deptype | $DEPEND_LINKS;
+                       }
+                       else {
+                               $deptype=$deptype | $DEPEND_CONTENT;
+                       }
+               }
+       }
+       else {
+               $deptype=$DEPEND_CONTENT;
        }
 
        if ($simple) {