To reproduce: 

1. Add the backlinkbug plugin below to ikiwiki. 
2. Create a page named test.mdwn somewhere in the wiki. 
3. Refresh ikiwiki in verbose mode. Pages whose bestlink is the test.mwdn page will be printed to the terminal.
4. Delete test.mdwn.
5. Refresh ikiwiki in verbose mode again. The same pages will be printed to the terminal again.
6. Refresh ikiwiki in verbose mode another time. Now no pages will be printed.

bestlink() checks %links (and %pagecase) to confirm the existance of the page.
However, find_del_files() does not remove the deleted page from %links (and %pagecase).

Since find_del_files removes the deleted page from %pagesources and %destsources,
won't it make sense for bestlink() to check %pagesources first? --[[harishcm]]


----

    #!/usr/bin/perl
    # Plugin to reproduce bestlink returning deleted pages. 
    # Run with ikiwiki in verbose mode.
    
    package IkiWiki::Plugin::bestlinkbug;
    
    use warnings;
    use strict;
    use IkiWiki 3.00;
    
    sub import {
    	hook(type => "getsetup", id => "bestlinkbug", call => \&getsetup);
    	hook(type => "needsbuild", id => "bestlinkbug", call => \&needsbuild);
    }
    
    sub getsetup () {
    	return
    		plugin => {
    			safe => 1,
    			rebuild => 0,
    		},
    }
    
    sub needsbuild (@) {
    	my $needsbuild=shift;
    	
    	foreach my $page (keys %pagestate) {
    		my $testpage=bestlink($page, "test") || next;
    		
    		debug("$page");
    	}
    }	
    
    1