diff --git a/compatibility/2.3.nom b/compatibility/2.3.nom
index 4df7850..2381010 100644
--- a/compatibility/2.3.nom
+++ b/compatibility/2.3.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <2.3 to Nomsu 2.3
 
diff --git a/compatibility/2.4.nom b/compatibility/2.4.nom
index 741b7eb..b50fec3 100644
--- a/compatibility/2.4.nom
+++ b/compatibility/2.4.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <2.4 to Nomsu 2.4
 
diff --git a/compatibility/2.5.5.5.nom b/compatibility/2.5.5.5.nom
index b086a9d..b242e57 100644
--- a/compatibility/2.5.5.5.nom
+++ b/compatibility/2.5.5.5.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <2.5.5.5 to Nomsu 2.5.5.5
 
diff --git a/compatibility/2.5.nom b/compatibility/2.5.nom
index 27473e7..e55915d 100644
--- a/compatibility/2.5.nom
+++ b/compatibility/2.5.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <2.5 to Nomsu 2.5
 
diff --git a/compatibility/2.nom b/compatibility/2.nom
index 06e3bff..3f37cb4 100644
--- a/compatibility/2.nom
+++ b/compatibility/2.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu 1 to Nomsu 2
 
diff --git a/compatibility/3.5.5.6.nom b/compatibility/3.5.5.6.nom
index 892725f..b46144e 100644
--- a/compatibility/3.5.5.6.nom
+++ b/compatibility/3.5.5.6.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <3.5.5.6 to Nomsu 3.5.5.6
 
diff --git a/compatibility/3.6.nom b/compatibility/3.6.nom
index c6afc75..07ad7a5 100644
--- a/compatibility/3.6.nom
+++ b/compatibility/3.6.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <3.6 to 3.6
 
diff --git a/compatibility/3.7.nom b/compatibility/3.7.nom
index dda2b5a..ca49e3f 100644
--- a/compatibility/3.7.nom
+++ b/compatibility/3.7.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <3.7 to 3.7
 
diff --git a/compatibility/3.nom b/compatibility/3.nom
index d1599cc..8f20f1a 100644
--- a/compatibility/3.nom
+++ b/compatibility/3.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines upgrades from Nomsu <=2 to Nomsu 3
 
diff --git a/compatibility/compatibility.nom b/compatibility/compatibility.nom
index 7f186ea..2093aff 100644
--- a/compatibility/compatibility.nom
+++ b/compatibility/compatibility.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains code for defining ways to upgrade code between different versions
     of Nomsu.
@@ -26,7 +26,7 @@ compile [upgrade action %actions to %version as %body] to:
             if (%action.%i.type is "Var"):
                 %replacements.(%action.%i.1) = "\(\%tree as lua id)[\%i]"
         
-        %needs_mangle = (no)
+        define mangler
         local action [make tree %t]:
             when:
                 (%t is "Var" syntax tree):
@@ -34,10 +34,7 @@ compile [upgrade action %actions to %version as %body] to:
                         return %replacements.(%t.1)
                     ..else:
                         external %needs_mangle = (yes)
-                        return ".."
-                            \(%t.type){source=\(quote "\(%t.source)"), \(..)
-                                quote "\(%t.1) \000\(=lua "string.format('%X', __MANGLE_INDEX)")"
-                            ..}
+                        return "\(%t.type){source=\(quote "\(%t.source)"), \(quote (mangle %t.1))}"
                 
                 (%t is syntax tree):
                     %args = []
@@ -47,7 +44,7 @@ compile [upgrade action %actions to %version as %body] to:
                         ..else:
                             %args::add "\(%k)=\(make tree %v)"
                     
-                    return "\(%t.type){\(%args joined with ", ")}"
+                    return "\(%t.type){\(%args::joined with ", ")}"
                 
                 else: return (quote %t)
         
@@ -58,8 +55,7 @@ compile [upgrade action %actions to %version as %body] to:
                 upgrade_action_1_to_2_via_3(\(quote %action.stub), \(%version as lua expr), function(\(..)
                     \%tree as lua id
                 ..)
-                    \("__MANGLE_INDEX = (__MANGLE_INDEX or 0) + 1\n    " if (%needs_mangle) else "")\
-                ..return \%retval
+                    return \%retval
                 end)
     
     return %lua
diff --git a/core/collections.nom b/core/collections.nom
index 2af7605..bc58c7b 100644
--- a/core/collections.nom
+++ b/core/collections.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains code that supports manipulating and using collections like lists
     and dictionaries.
diff --git a/core/control_flow.nom b/core/control_flow.nom
index 0c38485..b26b870 100644
--- a/core/control_flow.nom
+++ b/core/control_flow.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains compile-time actions that define basic control flow structures
     like "if" statements and loops.
diff --git a/core/coroutines.nom b/core/coroutines.nom
index 753a2ef..d7d1db4 100644
--- a/core/coroutines.nom
+++ b/core/coroutines.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines the code that creates and manipulates coroutines
 
diff --git a/core/errors.nom b/core/errors.nom
index 638b487..53f88be 100644
--- a/core/errors.nom
+++ b/core/errors.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains basic error reporting code
 
@@ -27,7 +27,9 @@ compile [assume %a == %b] to:
             do
                 local \(mangle "a"), \(mangle "b") = \(%a as lua expr), \(%b as lua expr)
                 if \(mangle "a") ~= \(mangle "b") then
-                    error(\(quote "\%assumption").."\\n"..tostring(\(mangle "a")).." != "..tostring(\(mangle "b")), 0)
+                    error(\(quote "\%assumption").."\\n"..tostring(\(mangle "a")).." != "..tostring(\(..)
+                mangle "b"
+            ..), 0)
                 end
             end
 
diff --git a/core/id.nom b/core/id.nom
index 8a213d4..9f41cfb 100644
--- a/core/id.nom
+++ b/core/id.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     A simple UUID function based on RFC 4122: http://www.ietf.org/rfc/rfc4122.txt
 
@@ -10,14 +10,16 @@ use "core/control_flow.nom"
 %NaN_surrogate = {}
 %nil_surrogate = {}
 %obj_by_id = {}
-set %obj_by_id's metatable to {__mode: "v"}
+set %obj_by_id's metatable to {__mode:"v"}
 %id_by_obj = {}
-set %id_by_obj's metatable to {..}
-    __mode: "k"
+set %id_by_obj 's metatable to {..}
+    __mode:"k"
     __index: (..)
         [%self, %key] ->:
-            if (%key == (nil)): return %self.%nil_surrogate
-            if (%key != %key): return %self.%NaN_surrogate
+            if (%key == (nil)):
+                return %self.%nil_surrogate
+            if (%key != %key):
+                return %self.%NaN_surrogate
             --- %retry ---
             %id = (uuid)
             if (%obj_by_id.%id != (nil)): go to %retry
@@ -28,16 +30,18 @@ set %id_by_obj's metatable to {..}
 action [uuid]:
     # Set all the other bits to randomly (or pseudo-randomly) chosen values.
     %bytes = [..]
-        randint (2^(4*8)), # time-low
-        randint (2^(2*8)), # time-mid
-        randint (2^(2*8 - 4)), # time-high-and-version
-        randint (2^(1*8 - 2)), # clock-seq-and-reserved
-        randint (2^(1*8)), # clock-seq-low
-        randint (2^(3*8)), randint (2^(3*8)), # node
+        # time-low, time-mid, time-high-and-version
+        randint (2 ^ (4 * 8)), randint (2 ^ (2 * 8)), randint (2 ^ (2 * 8 - 4))
+        # clock-seq-and-reserved, clock-seq-low
+        randint (2 ^ (1 * 8 - 2)), randint (2 ^ (1 * 8)), randint (2 ^ (3 * 8))
+        # node
+        randint (2 ^ (3 * 8))
+    
     # Set the four most significant bits (bits 12 through 15) of the
     # time_hi_and_version field to the 4-bit version number from
     # Section 4.1.3.
     %bytes.3 += 0x4000
+    
     # Set the two most significant bits (bits 6 and 7) of the
     # clock_seq_hi_and_reserved to zero and one, respectively.
     %bytes.4 += 0xC0
@@ -52,5 +56,4 @@ test:
     seed random with 0
     assume ((id of %x) != (id of []))
     seed random
-
 action [id of %, %'s id, %' id] %id_by_obj.%
diff --git a/core/io.nom b/core/io.nom
index e47554f..d656419 100644
--- a/core/io.nom
+++ b/core/io.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains basic input/output code
 
diff --git a/core/math.nom b/core/math.nom
index 6a205b6..439b698 100644
--- a/core/math.nom
+++ b/core/math.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines some common math literals and functions
 
@@ -73,27 +73,27 @@ compile [all of %items, all %items] to:
     unless (%items.type is "List"):
         return (Lua value "utils.all(\(%items as lua expr))")
     %clauses = ((% as lua expr) for % in %items)
-    return (Lua value "(\(%clauses joined with " and "))")
+    return (Lua value "(\(%clauses::joined with " and "))")
 
 parse [not all of %items, not all %items] as (not (all of %items))
 compile [any of %items, any %items] to:
     unless (%items.type is "List"):
         return (Lua value "utils.any(\(%items as lua expr))")
     %clauses = ((% as lua expr) for % in %items)
-    return (Lua value "(\(%clauses joined with " or "))")
+    return (Lua value "(\(%clauses::joined with " or "))")
 
 parse [none of %items, none %items] as (not (any of %items))
 compile [sum of %items, sum %items] to:
     unless (%items.type is "List"):
         return (Lua value "utils.sum(\(%items as lua expr))")
     %clauses = ((% as lua expr) for % in %items)
-    return (Lua value "(\(%clauses joined with " + "))")
+    return (Lua value "(\(%clauses::joined with " + "))")
 
 compile [product of %items, product %items] to:
     unless (%items.type is "List"):
         return (Lua value "utils.product(\(%items as lua expr))")
     %clauses = ((% as lua expr) for % in %items)
-    return (Lua value "(\(%clauses joined with " * "))")
+    return (Lua value "(\(%clauses::joined with " * "))")
 
 action [avg of %items, average of %items] (=lua "(utils.sum(\%items)/#\%items)")
 compile [min of %items, smallest of %items, lowest of %items] to (..)
diff --git a/core/metaprogramming.nom b/core/metaprogramming.nom
index c978bf8..836b5a2 100644
--- a/core/metaprogramming.nom
+++ b/core/metaprogramming.nom
@@ -1,9 +1,9 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This File contains actions for making actions and compile-time actions and some helper
     functions to make that easier.
 
-lua> "NOMSU_CORE_VERSION = 7"
+lua> "NOMSU_CORE_VERSION = 8"
 lua> ".."
     do
         local mangle_index = 0
@@ -18,6 +18,7 @@ lua> ".."
     COMPILE_ACTIONS["define mangler"] = function(nomsu, tree)
         return LuaCode(tree.source, "local mangle_1 = mangler()")
     end
+
 lua> ".."
     COMPILE_ACTIONS["1 -> 2"] = function(nomsu, tree, \%args, \%body)
         local lua = LuaCode.Value(tree.source, "(function(")
diff --git a/core/operators.nom b/core/operators.nom
index 9395d9d..3d18275 100644
--- a/core/operators.nom
+++ b/core/operators.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains definitions of operators like "+" and "and".
 
diff --git a/core/scopes.nom b/core/scopes.nom
index 6ee2939..6cc79c0 100644
--- a/core/scopes.nom
+++ b/core/scopes.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains definitions pertaining to variable scoping
 
diff --git a/core/text.nom b/core/text.nom
index bd9335a..da9d550 100644
--- a/core/text.nom
+++ b/core/text.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains some definitions of text escape sequences, including ANSI console
     color codes.
@@ -26,36 +26,12 @@ test:
     assume ("asdf"::uppercase) == "ASDF"
     assume ("asdf"::with "s" -> "X") == "aXdf"
     assume ("one\ntwo\n"::lines) == ["one", "two", ""]
-    
     parse [アクション %spec %body] as (action %spec %body)
 test:
     %こんにちは = "こんにちは"
     アクション [% と言う] "\(%)世界"
     assume (%こんにちは と言う) == "こんにちは世界"
 
-# Text functions
-parse [%texts joined with %glue] as (%texts::joined with %glue)
-parse [%texts joined, joined %texts] as (%texts::joined)
-parse [byte %i of %text] as (%text::byte %i)
-parse [bytes %start to %stop of %text] as (%text::bytes %start to %stop)
-parse [bytes of %text] as (%text::bytes)
-parse [capitalized %text, %text capitalized] as (%text::capitalized)
-parse [uppercase %text, %text uppercase] as (%text::uppercase)
-parse [..]
-    %text with %sub instead of %patt, %text with %patt replaced by %sub
-    %text s/ %patt / %sub
-..as (%text::with %patt -> %sub)
-parse [%text matches %pattern] as (%text::matches %pattern)
-parse [%text matching %pattern] as ((%text::matching %pattern).1)
-
-compile [for %match in %text matching %patt %body] to (..)
-    Lua ".."
-        for \(%match as lua expr) in (\(%text as lua expr)):gmatch(\(%patt as lua expr)) do
-            \(%body as lua statements)
-            \(compile as (===next %match ===))
-        end
-        \(compile as (===stop %match ===))
-
 compile [%expr for %match in %text matching %patt] to (..)
     Lua value ".."
         (function()
diff --git a/examples/how_do_i.nom b/examples/how_do_i.nom
index 1f1b683..cc9901a 100644
--- a/examples/how_do_i.nom
+++ b/examples/how_do_i.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 # How do I...
 # Write a comment? Put a # and go till the end of the line
 # How do I write a multi-line comment?
@@ -190,7 +190,7 @@ action [..]
     I think %worse_things are worse than %better_things
     I like %better_things more than %worse_things
 ..:
-    say "\(%better_things capitalized) rule and \%worse_things drool!"
+    say "\(%better_things::capitalized) rule and \%worse_things drool!"
 
 I like "dogs" more than "cats"
 I think "chihuahuas" are worse than "corgis"
diff --git a/lib/base64.nom b/lib/base64.nom
index 92ce7c4..366ac3e 100644
--- a/lib/base64.nom
+++ b/lib/base64.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines actions for encoding/decoding base 64, as specified in:
     https://tools.ietf.org/html/rfc4648
@@ -39,7 +39,7 @@ action [base64 %str, base64 encode %str, %str base64]:
                 %chars::add "="
                 %chars::add "="
     
-    return (%chars joined)
+    return (%chars::joined)
 
 action [chr %] (=lua "string.char(\%)")
 action [decode base64 %str, %str base64 decoded, base64 decode %str]:
@@ -52,4 +52,4 @@ action [decode base64 %str, %str base64 decoded, base64 decode %str]:
         if (%str.(%i + 3) == "="): stop
         %chars::add (chr (((%indices.3 & 3) << 6) + %indices.4))
     
-    return (%chars joined)
+    return (%chars::joined)
diff --git a/lib/consolecolor.nom b/lib/consolecolor.nom
index 7809f86..c86e6d1 100644
--- a/lib/consolecolor.nom
+++ b/lib/consolecolor.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines actions for ANSI console color escape codes.
 
diff --git a/lib/file_hash.nom b/lib/file_hash.nom
index 35b8340..5553b35 100644
--- a/lib/file_hash.nom
+++ b/lib/file_hash.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines some actions for hashing files and looking up files by hash.
 
@@ -31,9 +31,10 @@ if %use_sha1:
         return (base64 %hash)
 ..else:
     # TODO: remove warning?
-    say "\027[31;1mWARNING: OpenSSL module not found. Defaulting to a non-cryptographically secure hash function.\027[0m"
+    say ".."
+        \027[31;1mWARNING: OpenSSL module not found. Defaulting to a non-cryptographically secure hash function.\027[0m
     action [hash %]:
-        %bytes = (bytes of %)
+        %bytes = (%::bytes)
         %hash = (%bytes.1 << 7)
         for %i in 2 to (size of %bytes):
             %hash = ((1000003 * %hash) ~ %bytes.%i)
diff --git a/lib/object.nom b/lib/object.nom
index 81632c2..897657c 100644
--- a/lib/object.nom
+++ b/lib/object.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains the implementation of an Object-Oriented programming system.
 
@@ -8,7 +8,7 @@ test:
         my action [set up]: %me.barks or= 0
         my action [bark, woof]:
             %barks = ("Bark!" for % in 1 to %me.barks)
-            return (%barks joined with " ")
+            return (%barks::joined with " ")
         
         my action [get pissed off]: %me.barks += 1
     
@@ -31,7 +31,7 @@ test:
         my action [sploot] "splooted"
         my action [bark, woof]:
             %barks = ("Yip!" for % in 1 to %me.barks)
-            return (%barks joined with " ")
+            return (%barks::joined with " ")
     
     %corg = (new Corgi)
     assume (%corg.barks == 0)
diff --git a/lib/os.nom b/lib/os.nom
index 4edccb9..2c9addf 100644
--- a/lib/os.nom
+++ b/lib/os.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file defines some actions that interact with the operating system and filesystem.
 
@@ -66,4 +66,4 @@ action [source lines of %tree]:
         (..)
             (line % in %file) for % in (line number of %source.start in %file) to (..)
                 line number of %source.stop in %file
-        ..joined with "\n"
+        ..::joined with "\n"
diff --git a/lib/training_wheels.nom b/lib/training_wheels.nom
index e98392a..8e197c4 100644
--- a/lib/training_wheels.nom
+++ b/lib/training_wheels.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     This file contains a set of definitions that bring some familiar language features
     from other languages into nomsu (e.g. "||" and "continue")
diff --git a/lib/version.nom b/lib/version.nom
index 12e691a..3c876b8 100644
--- a/lib/version.nom
+++ b/lib/version.nom
@@ -1,3 +1,3 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 # This file sets the current library version.
 lua> "NOMSU_LIB_VERSION = 6"
diff --git a/nomsu_compiler.lua b/nomsu_compiler.lua
index 215617f..a53de1a 100644
--- a/nomsu_compiler.lua
+++ b/nomsu_compiler.lua
@@ -963,8 +963,15 @@ do
       end
       local space = MAX_LINE - pos
       local inline
+      local check
+      check = function(prefix, nomsu, tree)
+        if type(tree) == 'number' then
+          require('ldt').breakpoint()
+        end
+        return coroutine.yield(prefix, nomsu, tree)
+      end
       for prefix, nomsu, tree in coroutine.wrap(function()
-        inline = self:tree_to_inline_nomsu(t, false, coroutine.yield)
+        inline = self:tree_to_inline_nomsu(t, false, check)
       end) do
         local len = #tostring(nomsu)
         if prefix + len > MAX_LINE then
@@ -1083,7 +1090,11 @@ do
       nomsu:append(pop_comments(tree.source.stop, '\n'))
       return nomsu
     elseif "EscapedNomsu" == _exp_0 then
-      return NomsuCode(tree.source, "\\", recurse(tree[1], 1))
+      local val_nomsu = recurse(tree[1], 1)
+      if tree[1].type == "Action" and not val_nomsu:is_multiline() then
+        val_nomsu:parenthesize()
+      end
+      return NomsuCode(tree.source, "\\", val_nomsu)
     elseif "Block" == _exp_0 then
       local nomsu = NomsuCode(tree.source, pop_comments(tree.source.start))
       for i, line in ipairs(tree) do
diff --git a/nomsu_compiler.moon b/nomsu_compiler.moon
index 7a637f4..ba911ce 100644
--- a/nomsu_compiler.moon
+++ b/nomsu_compiler.moon
@@ -621,7 +621,10 @@ with NomsuCompiler
             if type(pos) != 'number' then pos = #tostring(pos)\match("[ ]*([^\n]*)$")
             space = MAX_LINE - pos
             local inline
-            for prefix, nomsu, tree in coroutine.wrap(-> inline = @tree_to_inline_nomsu(t, false, coroutine.yield))
+            check = (prefix,nomsu,tree)->
+                if type(tree) == 'number' then require('ldt').breakpoint!
+                coroutine.yield(prefix,nomsu,tree)
+            for prefix, nomsu, tree in coroutine.wrap(-> inline = @tree_to_inline_nomsu(t, false, check))
                 len = #tostring(nomsu)
                 break if prefix+len > MAX_LINE
                 break if tree.type == "Block" and (#tree > 1 or len > 20)
@@ -700,7 +703,10 @@ with NomsuCompiler
                 return nomsu
 
             when "EscapedNomsu"
-                return NomsuCode tree.source, "\\", recurse(tree[1], 1)
+                val_nomsu = recurse(tree[1], 1)
+                if tree[1].type == "Action" and not val_nomsu\is_multiline!
+                    val_nomsu\parenthesize!
+                return NomsuCode tree.source, "\\", val_nomsu
 
             when "Block"
                 nomsu = NomsuCode(tree.source, pop_comments(tree.source.start))
diff --git a/tools/autoformat.nom b/tools/autoformat.nom
index dcccc21..42e7dca 100755
--- a/tools/autoformat.nom
+++ b/tools/autoformat.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     Auto-format Nomsu code. Usage:
         nomsu tools/autoformat.nom [-i] file1 file2 directory1 ...
@@ -15,7 +15,7 @@ if (%args.1 is "-i"):
 
 for %path in %args:
     for file %filename in %path:
-        unless (%filename matches "%.nom$"): do next %filename
+        unless (%filename::matches "%.nom$"): do next %filename
         %formatted = ".."
             #!/usr/bin/env nomsu -V\(Nomsu version)
             \((parse (read file %filename) from %filename) as nomsu)
diff --git a/tools/find_action.nom b/tools/find_action.nom
index 7067959..4918966 100755
--- a/tools/find_action.nom
+++ b/tools/find_action.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     Find an action by its stub. Usage:
         nomsu tools/find_action.nom "foo %" file1 file2 directory1 ...
@@ -12,7 +12,7 @@ say "Looking for stub: \%stub..."
 %files = ((command line args).% for % in 2 to (size of (command line args)))
 for %path in %files:
     for file %filename in %path:
-        unless (%filename matches "%.nom$") (do next %filename)
+        unless (%filename::matches "%.nom$") (do next %filename)
         %file = (read file %filename)
         %tree = (parse %file from %filename)
         for %t in recursive %tree:
diff --git a/tools/parse.nom b/tools/parse.nom
index 0622e27..ee4a722 100755
--- a/tools/parse.nom
+++ b/tools/parse.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     Tool to print out a parse tree of files in an easy-to-read format. Usage:
         nomsu tools/parse.nom file1 file2 directory1 ...        
@@ -32,5 +32,5 @@ action [print tree %t at indent %indent]:
 
 for %path in (=lua "arg"):
     for file %filename in %path:
-        unless (%filename matches "%.nom$"): do next %filename
+        unless (%filename::matches "%.nom$"): do next %filename
         print tree (parse (read file %filename) from %filename) at indent ""
diff --git a/tools/replace.nom b/tools/replace.nom
index 76617cf..a0de4cc 100755
--- a/tools/replace.nom
+++ b/tools/replace.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     Tool to find and replace one tree with another.
         nomsu tools/replace.nom [-i] tree_to_replace replacement file1 file2 directory1 ...
@@ -21,7 +21,7 @@ if ((size of %args) < 3):
 %replacement = (parse (%args::remove index 1))
 for %path in %args:
     for file %filename in %path:
-        unless (any [%filename matches "%.nom$", %filename == "-", %filename == "stdin"]):
+        unless (any [%filename::matches "%.nom$", %filename == "-", %filename == "stdin"]):
             do next %filename
         %tree = (parse (read file %filename) from %filename)
         %tree2 = (%tree with %pattern ~> %replacement)
diff --git a/tools/test.nom b/tools/test.nom
index 07f8c7d..5c42ec9 100755
--- a/tools/test.nom
+++ b/tools/test.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     Tool to run all tests in a file (i.e. the code block inside a call to 'test %'). Usage:
         nomsu tools/test.nom file1 file2 directory1 ...
@@ -14,13 +14,13 @@ if (%args.1 == "-v"):
 # Make sure all the files get run
 for %path in (command line args):
     for file %filename in %path:
-        if (%filename matches "%.nom$"): use %filename
+        if (%filename::matches "%.nom$"): use %filename
 
 for %path in (command line args): use %path
 %tests = ((=lua "Source:from_string(\%s)") = %t for %s = %t in (tests))
 for %path in (command line args):
     for file %filename in %path:
-        unless (%filename matches "%.nom$"): do next %filename
+        unless (%filename::matches "%.nom$"): do next %filename
         %file_tests = []
         for %src = %test in %tests:
             if (%src.filename == %filename):
@@ -32,7 +32,7 @@ for %path in (command line args):
             if %verbose: say ""
             for % in %file_tests:
                 if %verbose:
-                    say "    \(yellow (%.test with "\n" replaced by "\n    "))"
+                    say "    \(yellow (%.test::with "\n" -> "\n    "))"
                 run %.test
             
             if %verbose: say (green "PASS")
diff --git a/tools/upgrade.nom b/tools/upgrade.nom
index 15f9b8c..d85465e 100755
--- a/tools/upgrade.nom
+++ b/tools/upgrade.nom
@@ -1,4 +1,4 @@
-#!/usr/bin/env nomsu -V3.7.5.6
+#!/usr/bin/env nomsu -V3.8.7.6
 #
     Tool to automatically update code from old versions of Nomsu. Usage:
         nomsu tools/upgrade.nom [-i] file1 file2 directory1 ...
@@ -21,7 +21,7 @@ if (%args.1 is "-t"):
 
 for %path in %args:
     for file %filename in %path:
-        unless (%filename matches "%.nom$"): do next %filename
+        unless (%filename::matches "%.nom$"): do next %filename
         %tree = (parse (read file %filename) from %filename)
         %uptree = (%tree upgraded)
         %text = ".."