diff -r a98812908fbc -r 6510de302f95 core/src/luan/modules/Which_mod.luan
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/src/luan/modules/Which_mod.luan	Mon Jan 18 06:42:50 2016 -0700
@@ -0,0 +1,53 @@
+local Luan = require "luan:Luan"
+local error = Luan.error
+local ipairs = Luan.ipairs or error()
+local pairs = Luan.pairs or error()
+local type = Luan.type or error()
+local String = require "luan:String"
+local literal = String.literal or error()
+local match = String.match or error()
+local Io = require "luan:Io"
+local print = Io.print or error()
+
+
+local M = {}
+
+M.uris = {
+	"luan:Luan"
+	"luan:Binary"
+	"luan:Html"
+	"luan:Io"
+	"luan:Math"
+	"luan:Package"
+	"luan:String"
+	"luan:Table"
+	"luan:Thread"
+	"luan:Time"
+	"luan:host/Hosting"
+	"luan:http/Http"
+	"luan:http/Server"
+	"luan:lucene/Lucene"
+	"luan:lucene/Versioning"
+	"luan:mail/Mail"
+	"luan:logging/Logging"
+	"luan:stripe/Stripe"
+}
+
+function M.which(name)
+	local ptn = "[:./]"..literal(name).."$"
+	for _, uri in ipairs(M.uris) do
+		local mod = require(uri)
+		if match(uri,ptn) ~= nil then
+			print(uri)
+		end
+		if type(mod) == "table" then
+			for key in pairs(mod) do
+				if key == name then
+					print(uri.." "..key)
+				end
+			end
+		end
+	end
+end
+
+return M

diff -r a98812908fbc -r 6510de302f95 core/src/luan/modules/which.luan
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/src/luan/modules/which.luan	Mon Jan 18 06:42:50 2016 -0700
@@ -0,0 +1,9 @@
+local Luan = require "luan:Luan"
+local error = Luan.error
+local values = Luan.values or error()
+local Which_mod = require "luan:Which_mod"
+local which = Which_mod.which or error()
+
+for name in values(...) do
+	which(name)
+end