I don't know what's wrong but I can't add a file with the mercurial backend (the file is created but not added).

Here is a patch that's seems to work, although I'm not quite sure what's wrong with current code :

    hbernard@tactic:/usr/share/perl5/IkiWiki/Rcs$ diff mercurial.pm /home/hbernard/mercurial.pm -Nau
    --- mercurial.pm        2007-03-24 16:14:35.000000000 +0100
    +++ /home/hbernard/mercurial.pm 2007-04-19 19:05:47.000000000 +0200
    @@ -95,7 +95,7 @@
     sub rcs_add ($) { # {{{
            my ($file) = @_;
     
    -       my @cmdline = ("hg", "-q", "-R", "$config{srcdir}", "add", "$file");
    +       my @cmdline = ("hg", "-q", "-R", "$config{srcdir}", "add", "$config{srcdir}/$file");
            if (system(@cmdline) != 0) {
                    warn "'@cmdline' failed: $!";
           }

My srcdir path has some symbolics links and hidden directorys... maybe that's it ?