diff --git a/lib/components_guide/wasm/examples/podcast_feed/podcast_feed.ex b/lib/components_guide/wasm/examples/podcast_feed/podcast_feed.ex
index f54d2f3..bc0808b 100644
--- a/lib/components_guide/wasm/examples/podcast_feed/podcast_feed.ex
+++ b/lib/components_guide/wasm/examples/podcast_feed/podcast_feed.ex
@@ -44,6 +44,12 @@ defmodule ComponentsGuide.Wasm.PodcastFeed do
   # Global.import()
   # wasm_import(:datasource, populate_episode_at_index: Orb.DSL.funcp(name: :datasource_populate_episode, params: I32))
 
+  defmodule StdOut do
+    use Orb.Import
+
+    defw(flush(read_ptr: I32.UnsafePointer, byte_count: I32), nil)
+  end
+
   defmodule Datasource do
     use Orb.Import
 
@@ -53,6 +59,10 @@ defmodule ComponentsGuide.Wasm.PodcastFeed do
     defw(write_episode_id(episode_id: EpisodeID, write_ptr: I32.UnsafePointer), I32)
     defw(write_episode_title(episode_id: EpisodeID, write_ptr: I32.UnsafePointer), I32)
     # defw(write_episode_author(episode_id: EpisodeID, write_ptr: I32.UnsafePointer), I32)
+    # TODO: what happens if it wants to write more than the memory available?
+    # Yet another reason to have arenas for title, description, etc.
+    # Or have to use a proper malloc approach.
+    # Or have to flush before each write, and rewind bump_offset to beginning.
     defw(write_episode_description(episode_id: EpisodeID, write_ptr: I32.UnsafePointer), I32)
     defw(write_episode_link_url(episode_id: EpisodeID, write_ptr: I32.UnsafePointer), I32)
     defw(write_episode_mp3_url(episode_id: EpisodeID, write_ptr: I32.UnsafePointer), I32)
@@ -72,6 +82,10 @@ defmodule ComponentsGuide.Wasm.PodcastFeed do
   importw(Datasource, :datasource)
 
   # SilverOrb.Arena.def(DatasourceArena, pages: 1)
+  # Used by url attribute in <enclosure url="…">
+  SilverOrb.Arena.def(WriteBuffer, pages: 1)
+  # Attributes must have <&" escaped.
+  SilverOrb.Arena.def(EscapeXMLBuffer, pages: byte_size("&amp;"))
 
   # There are a few ways to implement this:
   # 1. Pass every episode in as some sort of data structure. e.g.
@@ -134,7 +148,7 @@ defmodule ComponentsGuide.Wasm.PodcastFeed do
     build! do
       ~S[<?xml version="1.0" encoding="UTF-8"?>\n]
 
-      XML.open(:rss,
+      XML.open_newline(:rss,
         version: "2.0",
         "xmlns:itunes": "http://www.itunes.com/dtds/podcast-1.0.dtd",
         "xmlns:googleplay": "http://www.google.com/schemas/play-podcasts/1.0",
@@ -146,7 +160,7 @@ defmodule ComponentsGuide.Wasm.PodcastFeed do
       # This then causes the module to clear its local memory, resetting the bump
       # offset to the very beginning again.
 
-      XML.open(:channel)
+      XML.open_newline(:channel)
       XML.element(:title, @title)
 
       XML.element(:description, @description)
diff --git a/lib/components_guide/wasm/examples/podcast_feed/xml_formatter.ex b/lib/components_guide/wasm/examples/podcast_feed/xml_formatter.ex
index 6952e77..b447517 100644
--- a/lib/components_guide/wasm/examples/podcast_feed/xml_formatter.ex
+++ b/lib/components_guide/wasm/examples/podcast_feed/xml_formatter.ex
@@ -29,6 +29,13 @@ defmodule ComponentsGuide.Wasm.PodcastFeed.XMLFormatter do
     ])
   end
 
+  def open_newline(tag, attributes \\ []) when is_atom(tag) do
+    Orb.InstructionSequence.new(:memory_effect, [
+      open(tag, attributes),
+      append!(ascii: ?\n)
+    ])
+  end
+
   def close_newline(tag) when is_atom(tag) do
     xml_close_newline(Orb.DSL.const(Atom.to_string(tag)))
   end
diff --git a/test/components_guide/wasm/examples/podcast_feed_test.exs b/test/components_guide/wasm/examples/podcast_feed_test.exs
index 35db822..574323c 100644
--- a/test/components_guide/wasm/examples/podcast_feed_test.exs
+++ b/test/components_guide/wasm/examples/podcast_feed_test.exs
@@ -101,6 +101,9 @@ defmodule ComponentsGuide.Wasm.PodcastFeed.Test do
     assert "Episode 2" = xml_text_content(item2, "//itunes:title[1]")
     assert "Description for 1" = xml_text_content(item1, "//description[1]")
     assert "Description for 2" = xml_text_content(item2, "//description[1]")
+
+    # <enclosure url="${bunnyEpisodeURL(episodeID)}" length="${feedItem.mp3ByteCount}" type="audio/mpeg"/>
+    assert "Description for 2" = xml_xpath(item1, "//enclosure[1]")
   end
 
   defp xml_parse(xml) do
@@ -131,7 +134,7 @@ defmodule ComponentsGuide.Wasm.PodcastFeed.Test do
 
   defp do_xml_text_content(_, acc), do: acc
 
-  @tag :skip
+  # @tag :skip
   test "output optimized wasm" do
     path_wasm = Path.join(__DIR__, "podcast_feed_xml.wasm")
     path_wat = Path.join(__DIR__, "podcast_feed_xml.wat")
@@ -142,10 +145,10 @@ defmodule ComponentsGuide.Wasm.PodcastFeed.Test do
     System.cmd("wasm-opt", [path_wasm, "-o", path_opt_wasm, "-O"])
 
     %{size: size} = File.stat!(path_wasm)
-    assert size == 2419
+    assert size == 2418
 
     %{size: size} = File.stat!(path_opt_wasm)
-    assert size == 1868
+    assert size == 1909
 
     {wat, 0} = System.cmd("wasm2wat", [path_wasm])
     File.write!(path_wat, wat)
diff --git a/test/components_guide/wasm/examples/podcast_feed_xml.wasm b/test/components_guide/wasm/examples/podcast_feed_xml.wasm
index 618dd3f..1e90339 100644
Binary files a/test/components_guide/wasm/examples/podcast_feed_xml.wasm and b/test/components_guide/wasm/examples/podcast_feed_xml.wasm differ
diff --git a/test/components_guide/wasm/examples/podcast_feed_xml.wat b/test/components_guide/wasm/examples/podcast_feed_xml.wat
index 6166936..1ad1f29 100644
--- a/test/components_guide/wasm/examples/podcast_feed_xml.wat
+++ b/test/components_guide/wasm/examples/podcast_feed_xml.wat
@@ -1,28 +1,28 @@
 (module
   (type (;0;) (func (result i32)))
-  (type (;1;) (func (param i32 i32) (result i32)))
+  (type (;1;) (func (param i32) (result i64)))
   (type (;2;) (func (param i32) (result i32)))
-  (type (;3;) (func (param i32 i32 i32)))
-  (type (;4;) (func))
-  (type (;5;) (func (param i32)))
+  (type (;3;) (func (param i32 i32) (result i32)))
+  (type (;4;) (func (param i32 i32 i32)))
+  (type (;5;) (func))
+  (type (;6;) (func (param i32)))
   (import "datasource" "get_episodes_count" (func (;0;) (type 0)))
-  (import "datasource" "write_episode_id" (func (;1;) (type 1)))
-  (import "datasource" "get_episode_pub_date_utc" (func (;2;) (type 2)))
-  (import "datasource" "get_episode_duration_seconds" (func (;3;) (type 2)))
-  (import "datasource" "write_episode_title" (func (;4;) (type 1)))
-  (import "datasource" "write_episode_author" (func (;5;) (type 1)))
-  (import "datasource" "write_episode_description" (func (;6;) (type 1)))
-  (import "datasource" "write_episode_link_url" (func (;7;) (type 1)))
-  (import "datasource" "write_episode_mp3_url" (func (;8;) (type 1)))
-  (import "datasource" "get_episode_mp3_byte_count" (func (;9;) (type 2)))
-  (import "datasource" "write_episode_content_html" (func (;10;) (type 1)))
-  (func (;11;) (type 2) (param i32) (result i32)
+  (import "datasource" "get_episode_pub_date_utc" (func (;1;) (type 1)))
+  (import "datasource" "get_episode_duration_seconds" (func (;2;) (type 2)))
+  (import "datasource" "write_episode_id" (func (;3;) (type 3)))
+  (import "datasource" "write_episode_title" (func (;4;) (type 3)))
+  (import "datasource" "write_episode_description" (func (;5;) (type 3)))
+  (import "datasource" "write_episode_link_url" (func (;6;) (type 3)))
+  (import "datasource" "write_episode_mp3_url" (func (;7;) (type 3)))
+  (import "datasource" "get_episode_mp3_byte_count" (func (;8;) (type 2)))
+  (import "datasource" "write_episode_content_html" (func (;9;) (type 3)))
+  (func (;10;) (type 2) (param i32) (result i32)
     global.get 0
     global.get 0
     local.get 0
     i32.add
     global.set 0)
-  (func (;12;) (type 3) (param i32 i32 i32)
+  (func (;11;) (type 4) (param i32 i32 i32)
     (local i32)
     loop  ;; label = @1
       local.get 3
@@ -45,7 +45,7 @@
       local.set 3
       br 0 (;@1;)
     end)
-  (func (;13;) (type 3) (param i32 i32 i32)
+  (func (;12;) (type 4) (param i32 i32 i32)
     (local i32)
     loop  ;; label = @1
       local.get 3
@@ -65,7 +65,7 @@
       local.set 3
       br 0 (;@1;)
     end)
-  (func (;14;) (type 1) (param i32 i32) (result i32)
+  (func (;13;) (type 3) (param i32 i32) (result i32)
     (local i32 i32 i32)
     loop (result i32)  ;; label = @1
       local.get 0
@@ -98,7 +98,7 @@
       i32.const 0
       return
     end)
-  (func (;15;) (type 2) (param i32) (result i32)
+  (func (;14;) (type 2) (param i32) (result i32)
     (local i32)
     loop  ;; label = @1
       local.get 0
@@ -114,7 +114,7 @@
       end
     end
     local.get 1)
-  (func (;16;) (type 2) (param i32) (result i32)
+  (func (;15;) (type 2) (param i32) (result i32)
     (local i32 i32)
     loop  ;; label = @1
       local.get 1
@@ -135,11 +135,11 @@
       br_if 0 (;@1;)
     end
     local.get 1)
-  (func (;17;) (type 1) (param i32 i32) (result i32)
+  (func (;16;) (type 3) (param i32 i32) (result i32)
     (local i32 i32 i32)
     local.get 1
     local.get 0
-    call 16
+    call 15
     i32.add
     local.set 3
     local.get 3
@@ -168,7 +168,7 @@
       br_if 0 (;@1;)
     end
     local.get 3)
-  (func (;18;) (type 4)
+  (func (;17;) (type 5)
     global.get 2
     i32.eqz
     if  ;; label = @1
@@ -179,7 +179,7 @@
     i32.const 1
     i32.add
     global.set 2)
-  (func (;19;) (type 0) (result i32)
+  (func (;18;) (type 0) (result i32)
     global.get 2
     i32.const 0
     i32.gt_u
@@ -204,7 +204,7 @@
       global.set 0
     end
     global.get 1)
-  (func (;20;) (type 5) (param i32)
+  (func (;19;) (type 6) (param i32)
     (local i32)
     local.get 0
     global.get 1
@@ -213,60 +213,60 @@
       return
     end
     local.get 0
-    call 15
+    call 14
     local.set 1
     global.get 0
     local.get 0
     local.get 1
-    call 12
+    call 11
     global.get 0
     local.get 1
     i32.add
     global.set 0)
-  (func (;21;) (type 0) (result i32)
+  (func (;20;) (type 0) (result i32)
     global.get 0
     global.get 1
     i32.gt_u)
-  (func (;22;) (type 2) (param i32) (result i32)
-    call 18
-    i32.const 298
-    call 20
+  (func (;21;) (type 2) (param i32) (result i32)
+    call 17
+    i32.const 270
+    call 19
     local.get 0
-    call 20
-    i32.const 308
-    call 20
-    call 19)
-  (func (;23;) (type 2) (param i32) (result i32)
-    call 18
-    i32.const 760
-    call 20
+    call 19
+    i32.const 307
+    call 19
+    call 18)
+  (func (;22;) (type 2) (param i32) (result i32)
+    call 17
+    i32.const 759
+    call 19
     local.get 0
-    call 20
-    i32.const 763
-    call 20
-    call 19)
-  (func (;24;) (type 1) (param i32 i32) (result i32)
-    call 18
-    i32.const 766
-    call 20
+    call 19
+    i32.const 762
+    call 19
+    call 18)
+  (func (;23;) (type 3) (param i32 i32) (result i32)
+    call 17
+    i32.const 765
+    call 19
     local.get 0
-    call 20
-    i32.const 768
-    call 20
+    call 19
+    i32.const 767
+    call 19
     local.get 1
-    call 22
-    drop
-    i32.const 760
-    call 20
+    call 21
+    call 19
+    i32.const 759
+    call 19
     local.get 0
-    call 20
-    i32.const 770
-    call 20
-    call 19)
-  (func (;25;) (type 4)
+    call 19
+    i32.const 769
+    call 19
+    call 18)
+  (func (;24;) (type 5)
     i32.const 65536
     global.set 0)
-  (func (;26;) (type 4)
+  (func (;25;) (type 5)
     (local i32 i32)
     call 0
     local.set 0
@@ -276,9 +276,9 @@
       return
     end
     loop  ;; label = @1
-      call 18
-      i32.const 265
-      call 20
+      call 17
+      i32.const 264
+      call 19
       global.get 0
       i32.const 62
       i32.store8
@@ -286,12 +286,12 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 271
-      call 20
-      i32.const 277
-      call 20
-      i32.const 292
-      call 20
+      i32.const 280
+      call 19
+      i32.const 286
+      call 19
+      i32.const 301
+      call 19
       global.get 0
       i32.const 34
       i32.store8
@@ -306,21 +306,21 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
-      call 20
+      i32.const 270
+      call 19
       global.get 0
       local.get 1
       global.get 0
-      call 1
+      call 3
       i32.add
       global.set 0
-      i32.const 308
-      call 20
-      i32.const 312
-      call 23
+      i32.const 307
+      call 19
+      i32.const 311
+      call 22
       drop
-      i32.const 317
-      call 20
+      i32.const 316
+      call 19
       global.get 0
       i32.const 62
       i32.store8
@@ -328,21 +328,21 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
-      call 20
+      i32.const 270
+      call 19
       global.get 0
       local.get 1
       global.get 0
       call 4
       i32.add
       global.set 0
-      i32.const 308
-      call 20
-      i32.const 324
-      call 23
+      i32.const 307
+      call 19
+      i32.const 323
+      call 22
       drop
-      i32.const 330
-      call 20
+      i32.const 329
+      call 19
       global.get 0
       i32.const 62
       i32.store8
@@ -350,21 +350,21 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
-      call 20
+      i32.const 270
+      call 19
       global.get 0
       local.get 1
       global.get 0
       call 4
       i32.add
       global.set 0
-      i32.const 308
-      call 20
-      i32.const 344
-      call 23
+      i32.const 307
+      call 19
+      i32.const 343
+      call 22
       drop
-      i32.const 357
-      call 20
+      i32.const 356
+      call 19
       global.get 0
       i32.const 62
       i32.store8
@@ -372,21 +372,21 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
-      call 20
+      i32.const 270
+      call 19
       global.get 0
       local.get 1
       global.get 0
-      call 6
+      call 5
       i32.add
       global.set 0
-      i32.const 308
-      call 20
-      i32.const 370
-      call 23
+      i32.const 307
+      call 19
+      i32.const 369
+      call 22
       drop
-      i32.const 382
-      call 20
+      i32.const 381
+      call 19
       global.get 0
       i32.const 62
       i32.store8
@@ -394,23 +394,23 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
-      call 20
+      i32.const 270
+      call 19
       global.get 0
       local.get 1
       global.get 0
-      call 6
+      call 5
       i32.add
       global.set 0
-      i32.const 308
-      call 20
-      i32.const 399
-      call 23
+      i32.const 307
+      call 19
+      i32.const 398
+      call 22
       drop
-      i32.const 415
-      call 23
+      i32.const 414
+      call 22
       drop
-      call 19
+      call 18
       drop
       local.get 1
       i32.const 1
@@ -421,16 +421,16 @@
       i32.lt_s
       br_if 0 (;@1;)
     end)
-  (func (;27;) (type 0) (result i32)
-    call 18
-    i32.const 420
-    call 20
-    i32.const 461
-    call 20
-    i32.const 466
-    call 20
-    i32.const 477
-    call 20
+  (func (;26;) (type 0) (result i32)
+    call 17
+    i32.const 419
+    call 19
+    i32.const 460
+    call 19
+    i32.const 465
+    call 19
+    i32.const 476
+    call 19
     global.get 0
     i32.const 34
     i32.store8
@@ -438,10 +438,10 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 481
-    call 20
-    i32.const 497
-    call 20
+    i32.const 480
+    call 19
+    i32.const 496
+    call 19
     global.get 0
     i32.const 34
     i32.store8
@@ -449,10 +449,10 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 540
-    call 20
-    i32.const 560
-    call 20
+    i32.const 539
+    call 19
+    i32.const 559
+    call 19
     global.get 0
     i32.const 34
     i32.store8
@@ -460,10 +460,10 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 608
-    call 20
-    i32.const 620
-    call 20
+    i32.const 607
+    call 19
+    i32.const 619
+    call 19
     global.get 0
     i32.const 34
     i32.store8
@@ -471,10 +471,10 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 653
-    call 20
-    i32.const 670
-    call 20
+    i32.const 652
+    call 19
+    i32.const 669
+    call 19
     global.get 0
     i32.const 34
     i32.store8
@@ -489,8 +489,15 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 711
-    call 20
+    global.get 0
+    i32.const 10
+    i32.store8
+    global.get 0
+    i32.const 1
+    i32.add
+    global.set 0
+    i32.const 710
+    call 19
     global.get 0
     i32.const 62
     i32.store8
@@ -498,47 +505,54 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 324
+    global.get 0
+    i32.const 10
+    i32.store8
+    global.get 0
+    i32.const 1
+    i32.add
+    global.set 0
+    i32.const 323
     global.get 3
-    call 24
-    drop
-    i32.const 370
+    call 23
+    call 19
+    i32.const 369
     global.get 4
-    call 24
-    drop
-    i32.const 399
+    call 23
+    call 19
+    i32.const 398
     global.get 4
-    call 24
-    drop
-    i32.const 720
+    call 23
+    call 19
+    i32.const 719
     global.get 5
-    call 24
-    drop
-    i32.const 734
+    call 23
+    call 19
+    i32.const 733
     global.get 6
-    call 24
-    drop
-    i32.const 739
-    global.get 7
-    call 24
-    drop
-    call 26
-    i32.const 748
     call 23
-    drop
-    i32.const 756
+    call 19
+    i32.const 738
+    global.get 7
     call 23
-    drop
-    call 19)
+    call 19
+    call 25
+    i32.const 747
+    call 22
+    call 19
+    i32.const 755
+    call 22
+    call 19
+    call 18)
   (memory (;0;) 2)
   (global (;0;) (mut i32) (i32.const 65536))
   (global (;1;) (mut i32) (i32.const 0))
   (global (;2;) (mut i32) (i32.const 0))
   (global (;3;) (mut i32) (i32.const 255))
-  (global (;4;) (mut i32) (i32.const 261))
-  (global (;5;) (mut i32) (i32.const 261))
-  (global (;6;) (mut i32) (i32.const 261))
-  (global (;7;) (mut i32) (i32.const 262))
+  (global (;4;) (mut i32) (i32.const 0))
+  (global (;5;) (mut i32) (i32.const 0))
+  (global (;6;) (mut i32) (i32.const 0))
+  (global (;7;) (mut i32) (i32.const 261))
   (global (;8;) (mut i32) (i32.const 0))
   (global (;9;) (mut i32) (i32.const 0))
   (global (;10;) (mut i32) (i32.const 0))
@@ -551,49 +565,48 @@
   (export "author" (global 5))
   (export "link" (global 6))
   (export "language" (global 7))
-  (export "free_all" (func 25))
-  (export "alloc" (func 11))
-  (export "write_episodes_xml" (func 26))
-  (export "text_xml" (func 27))
-  (data (;0;) (i32.const 720) "itunes:author")
-  (data (;1;) (i32.const 466) " version=\22")
-  (data (;2;) (i32.const 357) "<description")
-  (data (;3;) (i32.const 653) " xmlns:content=\22")
-  (data (;4;) (i32.const 540) " xmlns:googleplay=\22")
-  (data (;5;) (i32.const 298) "<![CDATA[")
-  (data (;6;) (i32.const 312) "guid")
-  (data (;7;) (i32.const 261) "")
-  (data (;8;) (i32.const 608) " xmlns:dc=\22")
-  (data (;9;) (i32.const 760) "</")
-  (data (;10;) (i32.const 255) "hello")
-  (data (;11;) (i32.const 770) ">\0a")
-  (data (;12;) (i32.const 748) "channel")
-  (data (;13;) (i32.const 292) "false")
-  (data (;14;) (i32.const 415) "item")
-  (data (;15;) (i32.const 560) "http://www.google.com/schemas/play-podcasts/1.0")
-  (data (;16;) (i32.const 324) "title")
-  (data (;17;) (i32.const 317) "<title")
-  (data (;18;) (i32.const 768) ">")
-  (data (;19;) (i32.const 330) "<itunes:title")
-  (data (;20;) (i32.const 734) "link")
-  (data (;21;) (i32.const 481) " xmlns:itunes=\22")
-  (data (;22;) (i32.const 344) "itunes:title")
-  (data (;23;) (i32.const 766) "<")
-  (data (;24;) (i32.const 620) "http://purl.org/dc/elements/1.1/")
-  (data (;25;) (i32.const 497) "http://www.itunes.com/dtds/podcast-1.0.dtd")
-  (data (;26;) (i32.const 370) "description")
-  (data (;27;) (i32.const 382) "<itunes:subtitle")
-  (data (;28;) (i32.const 711) "<channel")
-  (data (;29;) (i32.const 477) "2.0")
-  (data (;30;) (i32.const 739) "language")
-  (data (;31;) (i32.const 461) "<rss")
-  (data (;32;) (i32.const 262) "en")
-  (data (;33;) (i32.const 756) "rss")
-  (data (;34;) (i32.const 399) "itunes:subtitle")
-  (data (;35;) (i32.const 265) "<item")
-  (data (;36;) (i32.const 763) ">\0a")
-  (data (;37;) (i32.const 271) "<guid")
-  (data (;38;) (i32.const 670) "http://purl.org/rss/1.0/modules/content/")
-  (data (;39;) (i32.const 277) " isPermaLink=\22")
-  (data (;40;) (i32.const 420) "<?xml version=\221.0\22 encoding=\22UTF-8\22?>\0a")
-  (data (;41;) (i32.const 308) "]]>"))
+  (export "free_all" (func 24))
+  (export "alloc" (func 10))
+  (export "write_episodes_xml" (func 25))
+  (export "text_xml" (func 26))
+  (data (;0;) (i32.const 719) "itunes:author")
+  (data (;1;) (i32.const 465) " version=\22")
+  (data (;2;) (i32.const 356) "<description")
+  (data (;3;) (i32.const 652) " xmlns:content=\22")
+  (data (;4;) (i32.const 539) " xmlns:googleplay=\22")
+  (data (;5;) (i32.const 270) "<![CDATA[")
+  (data (;6;) (i32.const 311) "guid")
+  (data (;7;) (i32.const 607) " xmlns:dc=\22")
+  (data (;8;) (i32.const 759) "</")
+  (data (;9;) (i32.const 255) "hello")
+  (data (;10;) (i32.const 769) ">\0a")
+  (data (;11;) (i32.const 747) "channel")
+  (data (;12;) (i32.const 301) "false")
+  (data (;13;) (i32.const 414) "item")
+  (data (;14;) (i32.const 559) "http://www.google.com/schemas/play-podcasts/1.0")
+  (data (;15;) (i32.const 323) "title")
+  (data (;16;) (i32.const 316) "<title")
+  (data (;17;) (i32.const 767) ">")
+  (data (;18;) (i32.const 329) "<itunes:title")
+  (data (;19;) (i32.const 733) "link")
+  (data (;20;) (i32.const 480) " xmlns:itunes=\22")
+  (data (;21;) (i32.const 343) "itunes:title")
+  (data (;22;) (i32.const 765) "<")
+  (data (;23;) (i32.const 619) "http://purl.org/dc/elements/1.1/")
+  (data (;24;) (i32.const 496) "http://www.itunes.com/dtds/podcast-1.0.dtd")
+  (data (;25;) (i32.const 369) "description")
+  (data (;26;) (i32.const 381) "<itunes:subtitle")
+  (data (;27;) (i32.const 710) "<channel")
+  (data (;28;) (i32.const 476) "2.0")
+  (data (;29;) (i32.const 738) "language")
+  (data (;30;) (i32.const 460) "<rss")
+  (data (;31;) (i32.const 261) "en")
+  (data (;32;) (i32.const 755) "rss")
+  (data (;33;) (i32.const 398) "itunes:subtitle")
+  (data (;34;) (i32.const 264) "<item")
+  (data (;35;) (i32.const 762) ">\0a")
+  (data (;36;) (i32.const 280) "<guid")
+  (data (;37;) (i32.const 669) "http://purl.org/rss/1.0/modules/content/")
+  (data (;38;) (i32.const 286) " isPermaLink=\22")
+  (data (;39;) (i32.const 419) "<?xml version=\221.0\22 encoding=\22UTF-8\22?>\0a")
+  (data (;40;) (i32.const 307) "]]>"))
diff --git a/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wasm b/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wasm
index 0add004..a7770a2 100644
Binary files a/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wasm and b/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wasm differ
diff --git a/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wat b/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wat
index a95ca1a..f440ae3 100644
--- a/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wat
+++ b/test/components_guide/wasm/examples/podcast_feed_xml_OPT.wat
@@ -1,15 +1,14 @@
 (module
-  (type (;0;) (func (result i32)))
-  (type (;1;) (func (param i32 i32) (result i32)))
+  (type (;0;) (func (param i32 i32) (result i32)))
+  (type (;1;) (func (result i32)))
   (type (;2;) (func))
-  (type (;3;) (func (param i32)))
-  (type (;4;) (func (param i32) (result i32)))
-  (type (;5;) (func (param i32 i32)))
-  (import "datasource" "get_episodes_count" (func (;0;) (type 0)))
-  (import "datasource" "write_episode_id" (func (;1;) (type 1)))
-  (import "datasource" "write_episode_title" (func (;2;) (type 1)))
-  (import "datasource" "write_episode_description" (func (;3;) (type 1)))
-  (func (;4;) (type 4) (param i32) (result i32)
+  (type (;3;) (func (param i32) (result i32)))
+  (type (;4;) (func (param i32)))
+  (import "datasource" "get_episodes_count" (func (;0;) (type 1)))
+  (import "datasource" "write_episode_id" (func (;1;) (type 0)))
+  (import "datasource" "write_episode_title" (func (;2;) (type 0)))
+  (import "datasource" "write_episode_description" (func (;3;) (type 0)))
+  (func (;4;) (type 3) (param i32) (result i32)
     (local i32)
     global.get 0
     global.get 0
@@ -27,7 +26,7 @@
     i32.const 1
     i32.add
     global.set 2)
-  (func (;6;) (type 0) (result i32)
+  (func (;6;) (type 1) (result i32)
     global.get 2
     i32.eqz
     if  ;; label = @1
@@ -49,7 +48,7 @@
       global.set 0
     end
     global.get 1)
-  (func (;7;) (type 3) (param i32)
+  (func (;7;) (type 4) (param i32)
     (local i32 i32 i32)
     local.get 0
     global.get 1
@@ -100,41 +99,39 @@
     local.get 2
     i32.add
     global.set 0)
-  (func (;8;) (type 3) (param i32)
+  (func (;8;) (type 3) (param i32) (result i32)
     call 5
-    i32.const 760
+    i32.const 759
     call 7
     local.get 0
     call 7
-    i32.const 763
+    i32.const 762
     call 7
-    call 6
-    drop)
-  (func (;9;) (type 5) (param i32 i32)
+    call 6)
+  (func (;9;) (type 0) (param i32 i32) (result i32)
     call 5
-    i32.const 766
+    i32.const 765
     call 7
     local.get 0
     call 7
-    i32.const 768
+    i32.const 767
     call 7
     call 5
-    i32.const 298
+    i32.const 270
     call 7
     local.get 1
     call 7
-    i32.const 308
+    i32.const 307
     call 7
     call 6
-    drop
-    i32.const 760
+    call 7
+    i32.const 759
     call 7
     local.get 0
     call 7
-    i32.const 770
+    i32.const 769
     call 7
-    call 6
-    drop)
+    call 6)
   (func (;10;) (type 2)
     i32.const 65536
     global.set 0)
@@ -148,7 +145,7 @@
     end
     loop  ;; label = @1
       call 5
-      i32.const 265
+      i32.const 264
       call 7
       global.get 0
       i32.const 62
@@ -157,11 +154,11 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 271
+      i32.const 280
       call 7
-      i32.const 277
+      i32.const 286
       call 7
-      i32.const 292
+      i32.const 301
       call 7
       global.get 0
       i32.const 34
@@ -177,7 +174,7 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
+      i32.const 270
       call 7
       global.get 0
       local.get 0
@@ -185,11 +182,12 @@
       call 1
       i32.add
       global.set 0
-      i32.const 308
+      i32.const 307
       call 7
-      i32.const 312
+      i32.const 311
       call 8
-      i32.const 317
+      drop
+      i32.const 316
       call 7
       global.get 0
       i32.const 62
@@ -198,7 +196,7 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
+      i32.const 270
       call 7
       global.get 0
       local.get 0
@@ -206,11 +204,12 @@
       call 2
       i32.add
       global.set 0
-      i32.const 308
+      i32.const 307
       call 7
-      i32.const 324
+      i32.const 323
       call 8
-      i32.const 330
+      drop
+      i32.const 329
       call 7
       global.get 0
       i32.const 62
@@ -219,7 +218,7 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
+      i32.const 270
       call 7
       global.get 0
       local.get 0
@@ -227,11 +226,12 @@
       call 2
       i32.add
       global.set 0
-      i32.const 308
+      i32.const 307
       call 7
-      i32.const 344
+      i32.const 343
       call 8
-      i32.const 357
+      drop
+      i32.const 356
       call 7
       global.get 0
       i32.const 62
@@ -240,7 +240,7 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
+      i32.const 270
       call 7
       global.get 0
       local.get 0
@@ -248,11 +248,12 @@
       call 3
       i32.add
       global.set 0
-      i32.const 308
+      i32.const 307
       call 7
-      i32.const 370
+      i32.const 369
       call 8
-      i32.const 382
+      drop
+      i32.const 381
       call 7
       global.get 0
       i32.const 62
@@ -261,7 +262,7 @@
       i32.const 1
       i32.add
       global.set 0
-      i32.const 298
+      i32.const 270
       call 7
       global.get 0
       local.get 0
@@ -269,12 +270,14 @@
       call 3
       i32.add
       global.set 0
-      i32.const 308
+      i32.const 307
       call 7
-      i32.const 399
+      i32.const 398
       call 8
-      i32.const 415
+      drop
+      i32.const 414
       call 8
+      drop
       call 6
       drop
       local.get 0
@@ -285,15 +288,15 @@
       i32.lt_s
       br_if 0 (;@1;)
     end)
-  (func (;12;) (type 0) (result i32)
+  (func (;12;) (type 1) (result i32)
     call 5
-    i32.const 420
+    i32.const 419
     call 7
-    i32.const 461
+    i32.const 460
     call 7
-    i32.const 466
+    i32.const 465
     call 7
-    i32.const 477
+    i32.const 476
     call 7
     global.get 0
     i32.const 34
@@ -302,9 +305,9 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 481
+    i32.const 480
     call 7
-    i32.const 497
+    i32.const 496
     call 7
     global.get 0
     i32.const 34
@@ -313,9 +316,9 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 540
+    i32.const 539
     call 7
-    i32.const 560
+    i32.const 559
     call 7
     global.get 0
     i32.const 34
@@ -324,9 +327,9 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 608
+    i32.const 607
     call 7
-    i32.const 620
+    i32.const 619
     call 7
     global.get 0
     i32.const 34
@@ -335,9 +338,9 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 653
+    i32.const 652
     call 7
-    i32.const 670
+    i32.const 669
     call 7
     global.get 0
     i32.const 34
@@ -353,7 +356,14 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 711
+    global.get 0
+    i32.const 10
+    i32.store8
+    global.get 0
+    i32.const 1
+    i32.add
+    global.set 0
+    i32.const 710
     call 7
     global.get 0
     i32.const 62
@@ -362,39 +372,54 @@
     i32.const 1
     i32.add
     global.set 0
-    i32.const 324
+    global.get 0
+    i32.const 10
+    i32.store8
+    global.get 0
+    i32.const 1
+    i32.add
+    global.set 0
+    i32.const 323
     global.get 3
     call 9
-    i32.const 370
+    call 7
+    i32.const 369
     global.get 4
     call 9
-    i32.const 399
+    call 7
+    i32.const 398
     global.get 4
     call 9
-    i32.const 720
+    call 7
+    i32.const 719
     global.get 5
     call 9
-    i32.const 734
+    call 7
+    i32.const 733
     global.get 6
     call 9
-    i32.const 739
+    call 7
+    i32.const 738
     global.get 7
     call 9
+    call 7
     call 11
-    i32.const 748
+    i32.const 747
     call 8
-    i32.const 756
+    call 7
+    i32.const 755
     call 8
+    call 7
     call 6)
   (memory (;0;) 2)
   (global (;0;) (mut i32) (i32.const 65536))
   (global (;1;) (mut i32) (i32.const 0))
   (global (;2;) (mut i32) (i32.const 0))
   (global (;3;) (mut i32) (i32.const 255))
-  (global (;4;) (mut i32) (i32.const 261))
-  (global (;5;) (mut i32) (i32.const 261))
-  (global (;6;) (mut i32) (i32.const 261))
-  (global (;7;) (mut i32) (i32.const 262))
+  (global (;4;) (mut i32) (i32.const 0))
+  (global (;5;) (mut i32) (i32.const 0))
+  (global (;6;) (mut i32) (i32.const 0))
+  (global (;7;) (mut i32) (i32.const 261))
   (export "memory" (memory 0))
   (export "title" (global 3))
   (export "description" (global 4))
@@ -405,44 +430,44 @@
   (export "alloc" (func 4))
   (export "write_episodes_xml" (func 11))
   (export "text_xml" (func 12))
-  (data (;0;) (i32.const 720) "itunes:author")
-  (data (;1;) (i32.const 466) " version=\22")
-  (data (;2;) (i32.const 357) "<description")
-  (data (;3;) (i32.const 653) " xmlns:content=\22")
-  (data (;4;) (i32.const 540) " xmlns:googleplay=\22")
-  (data (;5;) (i32.const 298) "<![CDATA[")
-  (data (;6;) (i32.const 312) "guid")
-  (data (;7;) (i32.const 608) " xmlns:dc=\22")
-  (data (;8;) (i32.const 760) "</")
+  (data (;0;) (i32.const 719) "itunes:author")
+  (data (;1;) (i32.const 465) " version=\22")
+  (data (;2;) (i32.const 356) "<description")
+  (data (;3;) (i32.const 652) " xmlns:content=\22")
+  (data (;4;) (i32.const 539) " xmlns:googleplay=\22")
+  (data (;5;) (i32.const 270) "<![CDATA[")
+  (data (;6;) (i32.const 311) "guid")
+  (data (;7;) (i32.const 607) " xmlns:dc=\22")
+  (data (;8;) (i32.const 759) "</")
   (data (;9;) (i32.const 255) "hello")
-  (data (;10;) (i32.const 770) ">\0a")
-  (data (;11;) (i32.const 748) "channel")
-  (data (;12;) (i32.const 292) "false")
-  (data (;13;) (i32.const 415) "item")
-  (data (;14;) (i32.const 560) "http://www.google.com/schemas/play-podcasts/1.0")
-  (data (;15;) (i32.const 324) "title")
-  (data (;16;) (i32.const 317) "<title")
-  (data (;17;) (i32.const 768) ">")
-  (data (;18;) (i32.const 330) "<itunes:title")
-  (data (;19;) (i32.const 734) "link")
-  (data (;20;) (i32.const 481) " xmlns:itunes=\22")
-  (data (;21;) (i32.const 344) "itunes:title")
-  (data (;22;) (i32.const 766) "<")
-  (data (;23;) (i32.const 620) "http://purl.org/dc/elements/1.1/")
-  (data (;24;) (i32.const 497) "http://www.itunes.com/dtds/podcast-1.0.dtd")
-  (data (;25;) (i32.const 370) "description")
-  (data (;26;) (i32.const 382) "<itunes:subtitle")
-  (data (;27;) (i32.const 711) "<channel")
-  (data (;28;) (i32.const 477) "2.0")
-  (data (;29;) (i32.const 739) "language")
-  (data (;30;) (i32.const 461) "<rss")
-  (data (;31;) (i32.const 262) "en")
-  (data (;32;) (i32.const 756) "rss")
-  (data (;33;) (i32.const 399) "itunes:subtitle")
-  (data (;34;) (i32.const 265) "<item")
-  (data (;35;) (i32.const 763) ">\0a")
-  (data (;36;) (i32.const 271) "<guid")
-  (data (;37;) (i32.const 670) "http://purl.org/rss/1.0/modules/content/")
-  (data (;38;) (i32.const 277) " isPermaLink=\22")
-  (data (;39;) (i32.const 420) "<?xml version=\221.0\22 encoding=\22UTF-8\22?>\0a")
-  (data (;40;) (i32.const 308) "]]>"))
+  (data (;10;) (i32.const 769) ">\0a")
+  (data (;11;) (i32.const 747) "channel")
+  (data (;12;) (i32.const 301) "false")
+  (data (;13;) (i32.const 414) "item")
+  (data (;14;) (i32.const 559) "http://www.google.com/schemas/play-podcasts/1.0")
+  (data (;15;) (i32.const 323) "title")
+  (data (;16;) (i32.const 316) "<title")
+  (data (;17;) (i32.const 767) ">")
+  (data (;18;) (i32.const 329) "<itunes:title")
+  (data (;19;) (i32.const 733) "link")
+  (data (;20;) (i32.const 480) " xmlns:itunes=\22")
+  (data (;21;) (i32.const 343) "itunes:title")
+  (data (;22;) (i32.const 765) "<")
+  (data (;23;) (i32.const 619) "http://purl.org/dc/elements/1.1/")
+  (data (;24;) (i32.const 496) "http://www.itunes.com/dtds/podcast-1.0.dtd")
+  (data (;25;) (i32.const 369) "description")
+  (data (;26;) (i32.const 381) "<itunes:subtitle")
+  (data (;27;) (i32.const 710) "<channel")
+  (data (;28;) (i32.const 476) "2.0")
+  (data (;29;) (i32.const 738) "language")
+  (data (;30;) (i32.const 460) "<rss")
+  (data (;31;) (i32.const 261) "en")
+  (data (;32;) (i32.const 755) "rss")
+  (data (;33;) (i32.const 398) "itunes:subtitle")
+  (data (;34;) (i32.const 264) "<item")
+  (data (;35;) (i32.const 762) ">\0a")
+  (data (;36;) (i32.const 280) "<guid")
+  (data (;37;) (i32.const 669) "http://purl.org/rss/1.0/modules/content/")
+  (data (;38;) (i32.const 286) " isPermaLink=\22")
+  (data (;39;) (i32.const 419) "<?xml version=\221.0\22 encoding=\22UTF-8\22?>\0a")
+  (data (;40;) (i32.const 307) "]]>"))