diff --git a/code_obj.lua b/code_obj.lua
index ab0f1ac..f0440ca 100644
--- a/code_obj.lua
+++ b/code_obj.lua
@@ -101,20 +101,21 @@ do
     end,
     append = function(self, ...)
       local n = select("#", ...)
-      local bits = self.bits
+      local bits, indents = self.bits, self.indents
+      local match = string.match
       for i = 1, n do
         local b = select(i, ...)
         assert(b ~= self, "No recursion please.")
         bits[#bits + 1] = b
         if type(b) == 'string' then
           do
-            local spaces = b:match("\n([ ]*)[^\n]*$")
+            local spaces = match(b, "\n([ ]*)[^\n]*$")
             if spaces then
               self.current_indent = #spaces
             end
           end
         elseif self.current_indent ~= 0 then
-          self.indents[#bits] = self.current_indent
+          indents[#bits] = self.current_indent
         end
       end
       self.__str = nil
@@ -151,26 +152,8 @@ do
   _class_0 = setmetatable({
     __init = function(self, source, ...)
       self.source = source
-      self.bits = {
-        ...
-      }
-      local indent, indents = 0, { }
-      local match = string.match
-      for i, b in ipairs(self.bits) do
-        if type(b) == 'string' then
-          do
-            local spaces = match(b, "\n([ ]*)[^\n]*$")
-            if spaces then
-              indent = #spaces
-            end
-          end
-        elseif indent ~= 0 then
-          indents[i] = indent
-        end
-      end
-      self.current_indent = indent
-      self.indents = indents
-      self.__str = nil
+      self.bits, self.indents, self.current_indent = { }, { }, 0
+      self:append(...)
       if type(self.source) == 'string' then
         local filename, start, stop = self.source:match("^(.-)%[(%d+):(%d+)%]$")
         if not (filename) then
diff --git a/code_obj.moon b/code_obj.moon
index fbe202c..66b7978 100644
--- a/code_obj.moon
+++ b/code_obj.moon
@@ -62,18 +62,8 @@ Source = immutable {"filename","start","stop"}, {
 
 class Code
     new: (@source, ...)=>
-        @bits = {...}
-        indent, indents = 0, {}
-        match = string.match
-        for i,b in ipairs @bits
-            if type(b) == 'string'
-                if spaces = match(b, "\n([ ]*)[^\n]*$")
-                    indent = #spaces
-            elseif indent != 0
-                indents[i] = indent
-        @current_indent = indent
-        @indents = indents
-        @__str = nil
+        @bits, @indents, @current_indent = {}, {}, 0
+        @append(...)
         if type(@source) == 'string'
             filename,start,stop = @source\match("^(.-)%[(%d+):(%d+)%]$")
             unless filename
@@ -91,16 +81,17 @@ class Code
 
     append: (...)=>
         n = select("#",...)
-        bits = @bits
+        bits, indents = @bits, @indents
+        match = string.match
         for i=1,n
             b = select(i, ...)
             assert(b != self, "No recursion please.")
             bits[#bits+1] = b
             if type(b) == 'string'
-                if spaces = b\match("\n([ ]*)[^\n]*$")
+                if spaces = match(b, "\n([ ]*)[^\n]*$")
                     @current_indent = #spaces
             elseif @current_indent != 0
-                @indents[#bits] = @current_indent
+                indents[#bits] = @current_indent
         @__str = nil
     
     prepend: (...)=>
diff --git a/core/metaprogramming.nom b/core/metaprogramming.nom
index 9d6e1e6..6c5221c 100644
--- a/core/metaprogramming.nom
+++ b/core/metaprogramming.nom
@@ -101,11 +101,7 @@ immediately
                     return t.type.."("..make_tree(t.value)..")"
                 end
             end
-            lua:append([[)
-                local tree = ]], make_tree(\%longhand), [[
-
-                return nomsu:tree_to_lua(tree)
-            end);]])
+            lua:append(")\n    local tree = ", make_tree(\%longhand), "\n    return nomsu:tree_to_lua(tree)\nend);")
             return lua
 
 action [remove action %stub]
diff --git a/lib/file_hash.nom b/lib/file_hash.nom
index 9a707c3..1f263de 100644
--- a/lib/file_hash.nom
+++ b/lib/file_hash.nom
@@ -3,7 +3,7 @@ use "core"
 action [file with hash %hash]
     lua> ".."
         local Hash = require("openssl.digest")
-        for filename in io.popen('find -L . -type f -name "*.nom"'):lines() do
+        for filename in io.popen('find -L . -not -path "*/\\\\.*" -type f -name "*.nom"'):lines() do
             local file = io.open(filename)
             local contents = file:read("*a")
             file:close()
diff --git a/nomsu.lua b/nomsu.lua
index 10a3b66..4d80357 100644
--- a/nomsu.lua
+++ b/nomsu.lua
@@ -89,7 +89,7 @@ all_files = function(path)
   end
   path = path:gsub("\\", "\\\\"):gsub("`", ""):gsub('"', '\\"'):gsub("$", "")
   return coroutine.wrap(function()
-    local f = io.popen('find -L "' .. path .. '" -type f -name "*.nom"')
+    local f = io.popen('find -L "' .. path .. '" -not -path "*/\\.*" -type f -name "*.nom"')
     for line in f:lines() do
       coroutine.yield(line)
     end
diff --git a/nomsu.moon b/nomsu.moon
index 50a95d9..d8ae4e0 100755
--- a/nomsu.moon
+++ b/nomsu.moon
@@ -78,7 +78,7 @@ all_files = (path)->
     -- TODO: improve sanitization
     path = path\gsub("\\","\\\\")\gsub("`","")\gsub('"','\\"')\gsub("$","")
     return coroutine.wrap ->
-        f = io.popen('find -L "'..path..'" -type f -name "*.nom"')
+        f = io.popen('find -L "'..path..'" -not -path "*/\\.*" -type f -name "*.nom"')
         for line in f\lines!
             coroutine.yield(line)
         success = f\close!
diff --git a/utils.lua b/utils.lua
index d9d64c3..c78a0c8 100644
--- a/utils.lua
+++ b/utils.lua
@@ -49,9 +49,6 @@ local function repr(x, depth)
             return "{"..table.concat(ret, ", ").."}"
         end
     elseif x_type == 'string' then
-        if x == "\n" then
-            return "'\\n'"
-        end
         local escaped = x:gsub("\\", "\\\\"):gsub("\n","\\n"):gsub('"', '\\"')
         return '"'..escaped..'"'
     else