fix nested quotes and alter linebreak parsing

migrations.lua

@@ -73,4 +73,22 @@ return {
     schema.add_column("users", "signature_original_markup", types.text{default = ""})
     schema.add_column("users", "signature_rendered", types.text{default = ""})
   end,
+  
+  [11] = function ()
+    local render = require("lib.babycode").to_html
+    local html_escape = require("lapis.html").escape
+    local phs = db.query("SELECT * from post_history")
+    local users = db.query("SELECT * from users")
+    db.query("BEGIN")
+    
+    for _, post_history in ipairs(phs) do
+      db.query("UPDATE post_history SET content = ? WHERE id = ?", render(post_history.original_markup, html_escape), post_history.id)
+    end
+    
+    for _, user in ipairs(users) do
+      db.query("UPDATE users SET signature_rendered = ? WHERE id = ?", render(user.signature_original_markup, html_escape), user.id)
+    end
+    
+    db.query("COMMIT")
+  end,
 }