It seems `backlink(.)` doesn't work, that is, it doesn't match pages linked
to from the current page.

If I have two test pages, `foo`, which links to `bar`, then (on the `foo`
page):

 * backlink(foo) lists 'bar'
 * backlink(.) lists nothing

tested with 3.20120109.

— [[Jon]]

> The attached patch should fix it:

>> [[applied|done]] thanks --[[Joey]] 

    From 30512ac5f6a724bafb1095ab246e0648999f7b6c Mon Sep 17 00:00:00 2001
    From: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
    Date: Fri, 13 Jan 2012 11:02:11 +0100
    Subject: [PATCH] backlink(.) should behave like backlink(<current page>)
    
    Since commit c4d4cad3befbbd444d094cbeb0b6ebba3910a025, the single dot in
    a pagespec can be used to mean the current page. While this worked
    correctly in link() it didn't work in backlink(). Fix this by explicitly
    checking the testpage in backlink against . and replacing it with the
    current location if necessary.
    ---
     IkiWiki.pm |   10 ++++++++--
     1 files changed, 8 insertions(+), 2 deletions(-)
    
    diff --git a/IkiWiki.pm b/IkiWiki.pm
    index 08e242a..bc56501 100644
    --- a/IkiWiki.pm
    +++ b/IkiWiki.pm
    @@ -2647,8 +2647,14 @@ sub match_link ($$;@) {
     }
     
     sub match_backlink ($$;@) {
    -	my $ret=match_link($_[1], $_[0], @_);
    -	$ret->influences($_[1] => $IkiWiki::DEPEND_LINKS);
    +	my $page=shift;
    +	my $testpage=shift;
    +	my %params=@_;
    +	if ($testpage eq '.') {
    +		$testpage = $params{'location'}
    +	}
    +	my $ret=match_link($testpage, $page, @_);
    +	$ret->influences($testpage => $IkiWiki::DEPEND_LINKS);
     	return $ret;
     }
     
    -- 
    1.7.8.rc2.253.gdbf3


> (you need to re-make IkiWiki for it to work)
