diff --git a/prelude.ld b/prelude.ld
index 58acc16..0f70064 100644
--- a/prelude.ld
+++ b/prelude.ld
@@ -249,33 +249,32 @@ fn concat {
 & the console: sending messages to the outside world
 & the console is *both* something we send to the host language's console
 & ...and also a list of messages.
-box console = []
+& box console = []
 
-fn flush! {
-	"Clears the console, and returns the messages."
-	() -> {
-		let msgs = unbox (console)
-		store! (console, [])
-		msgs 
-	}
-}
+& fn flush! {
+& 	"Clears the console, and returns the messages."
+& 	() -> {
+& 		let msgs = unbox (console)
+& 		store! (console, [])
+& 		msgs 
+& 	}
+& }
 
-fn add_msg! {
-	"Adds a message to the console."
-	(msg as :string) -> update! (console, append (_, msg))
-	(msgs as :list) -> {
-		base :print! (("adding msg", msgs))
-		let msg =	do msgs > map (string, _) > join 
-		base :print! (("msg: ", msg))
-		update! (console, append (_, msg))
-	}
-}
+& fn add_msg! {
+& 	"Adds a message to the console."
+& 	(msg as :string) -> update! (console, append (_, msg))
+& 	(msgs as :list) -> {
+& 		base :print! (("adding msg", msgs))
+& 		let msg =	do msgs > map (string, _) > join 
+& 		base :print! (("msg: ", msg))
+& 		update! (console, append (_, msg))
+& 	}
+& }
 
 fn print! {
 	"Sends a text representation of Ludus values to the console."
 	(...args) -> {
 		base :print! (args)
-		& add_msg! (args)
 		:ok
 	}
 }
@@ -1306,7 +1305,6 @@ pkg Prelude {
 	coll?
 	colors
 	concat
-	console
 	cos
 	count
 	dec
@@ -1332,7 +1330,6 @@ pkg Prelude {
 	filter
 	first
 	floor
-	flush!
 	fn?
 	fold
 	forward!
diff --git a/src/errors.janet b/src/errors.janet
index d4fff55..71a2f0d 100644
--- a/src/errors.janet
+++ b/src/errors.janet
@@ -70,7 +70,7 @@
  (print source-line))
 
 (defn runtime-error [e]
- (when (= :string (type e)) (print e) (break e))
+ (when (= :string (type e)) (print (string "Internal Ludus error: " e)) (break e))
  (def msg (e :msg))
  (case msg
   "no match: function call" (fn-no-match e)
diff --git a/src/interpreter.janet b/src/interpreter.janet
index 6d62913..4f2b095 100644
--- a/src/interpreter.janet
+++ b/src/interpreter.janet
@@ -251,7 +251,9 @@
   (interpret last-line ctx))
 
 (defn- to_string [ctx] (fn [x] 
-  (b/stringify (interpret x ctx))))
+  (if (buffer? x) 
+    (string x)
+    (b/stringify (interpret x ctx)))))
 
 (defn- interpolated [ast ctx]
   (def terms (ast :data))
@@ -620,9 +622,9 @@
 (set interpret interpret*)
 
 # # repl
-# (import ./scanner :as s)
-# (import ./parser :as p)
-# (import ./validate :as v) 
+# (import /src/scanner :as s)
+# (import /src/parser :as p)
+# (import /src/validate :as v) 
 
 # (var source nil)
 
@@ -637,14 +639,16 @@
 #   # (when (has-errors? validated) (break (validated :errors)))
 #   # (def cleaned (get-in parsed [:ast :data 1]))
 #   # # (pp cleaned)
-#   # (interpret (parsed :ast) @{:^parent b/ctx})
-#   (try (interpret (parsed :ast) @{:^parent b/ctx})
-#     ([e] (if (struct? e) (error (e :msg)) (error e)))))
+#   (interpret (parsed :ast) @{:^parent b/ctx})
+#   # (try (interpret (parsed :ast) @{:^parent b/ctx})
+#   #   ([e] (if (struct? e) (error (e :msg)) (error e))))
+#   )
 
 # # (do 
 # (comment
 # (set source `
-
+# let foo = 42
+# "{foo} bar baz"
 # `)
 # (def result (run))
 # )
diff --git a/src/ludus.janet b/src/ludus.janet
index 928be28..8773a6f 100644
--- a/src/ludus.janet
+++ b/src/ludus.janet
@@ -24,13 +24,13 @@
    (set (out :errors) (scanned :errors))
    (each err (scanned :errors)
     (e/scan-error err))
-   (break out))
+   (break (j/encode out)))
  (def parsed (p/parse scanned))
  (when (any? (parsed :errors))
   (set (out :errors) (parsed :errors))
   (each err (parsed :errors)
    (e/parse-error err))
-  (break out))
+  (break (j/encode out)))
  (def validated (v/valid parsed ctx))
  (when (any? (validated :errors))
   (set (out :errors) (validated :errors))
@@ -43,7 +43,7 @@
   ([err] 
    (e/runtime-error err)
    (set (out :errors) [err])
-   (break out)))
+   (break (j/encode out))))
  (setdyn :out stdout)
  (set (out :result) (b/show result))
  (var post @{})
@@ -53,4 +53,7 @@
  (set (out :draw) (post :draw))
  (string (j/encode out)))
 
-
+(ludus `
+ let foo = 42
+ "{foo} bar baz"
+`)
diff --git a/src/parser.janet b/src/parser.janet
index 6d94c49..0286fac 100644
--- a/src/parser.janet
+++ b/src/parser.janet
@@ -1116,10 +1116,11 @@
 
 # (do
 (comment
-(def source `...
+(def source `
+"{f} a {f}"
 `)
 (def scanned (s/scan source))
 # (print "\n***NEW PARSE***\n")
 (def a-parser (new-parser scanned))
-(def parsed (splat a-parser))
+(def parsed (interpolated a-parser))
 )