markdown: escape the meta information of code block in html

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/lib/markdown/markdown.nit b/lib/markdown/markdown.nit
index 613e1a4..b9e2f6a 100644 (file)
--- a/lib/markdown/markdown.nit
+++ b/lib/markdown/markdown.nit
@@ -758,8 +758,11 @@ class HTMLDecorator
        end
 
        redef fun add_code(v, block) do
-               if block isa BlockFence and block.meta != null then
-                       v.add "<pre class=\"{block.meta.to_s}\"><code>"
+               var meta = block.meta
+               if meta != null then
+                       v.add "<pre class=\""
+                       append_value(v, meta)
+                       v.add "\"><code>"
                else
                        v.add "<pre><code>"
                end