Fix links generated by preprocessor directives when previewing.

As was already done for linkfication, links generated in a prevew page
are relative to the top of the wiki, so it has to be told that the destpage
is there.

I was using "" to indicate this, but that may confuse some preprocessor
plugins, which treat parameters with an empry value specially (sparkline is one
such). Instead, use "/", which is more accurate anyway and works just as well.

1 files changed, 3 insertions, 3 deletions

diff --git a/IkiWiki/CGI.pm b/IkiWiki/CGI.pm
index cfb2c0b1d..87cb9c3f3 100644
--- a/IkiWiki/CGI.pm
+++ b/IkiWiki/CGI.pm
@@ -354,9 +354,9 @@ sub cgi_editpage ($$) { #{{{
 		});
 		$form->tmpl_param("page_preview",
 			htmlize($page, $type,
-			linkify($page, "",
-			preprocess($page, $page,
-			filter($page, $page, $content), 0, 1))));
+			linkify($page, "/",
+			preprocess($page, "/",
+			filter($page, "/", $content), 0, 1))));
 		# previewing may have created files on disk
 		saveindex();
 	}