--- a/src/lib/Shared.luan	Thu Dec 04 12:13:01 2025 -0700
+++ b/src/lib/Shared.luan	Thu Dec 04 21:43:47 2025 -0700
@@ -2,6 +2,8 @@
 local error = Luan.error
 local ipairs = Luan.ipairs or error()
 local parse = Luan.parse or error()
+local String = require "luan:String.luan"
+local contains = String.contains or error()
 local Table = require "luan:Table.luan"
 local concat = Table.concat or error()
 local Time = require "luan:Time.luan"
@@ -9,6 +11,7 @@
 local thread_run = Thread.run or error()
 local Html = require "luan:Html.luan"
 local html_encode = Html.encode or error()
+local url_encode = Html.url_encode or error()
 local Http = require "luan:http/Http.luan"
 local Mail = require "luan:mail/Mail.luan"
 local User = require "site:/lib/User.luan"
@@ -18,6 +21,7 @@
 local chat_search = Chat.search or error()
 local Utils = require "site:/lib/Utils.luan"
 local base_url = Utils.base_url or error()
+local to_list = Utils.to_list or error()
 local Db = require "site:/lib/Db.luan"
 local Post = require "site:/lib/Post.luan"
 local get_post_by_id = Post.get_by_id or error()
@@ -184,4 +188,25 @@
 
 Shared.compressed = {compressed=true}
 
+function Shared.add_with(path)
+	local with = Http.request.parameters.with
+	if with ~= nil then
+		with = to_list(with)
+		local t = {}
+		for _, email in ipairs(with) do
+			t[#t+1] = "with="..url_encode(email)
+		end
+		path = path..(contains(path,"?") and "&" or "?")..concat(t,"&")
+	end
+	return path
+end
+
+function Shared.hidden_with()
+	local with = Http.request.parameters.with
+	with = to_list(with)
+	for _, email in ipairs(with) do %>
+				<input type=hidden name=with value="<%=html_encode(email)%>">
+<%	end
+end
+
 return Shared