diff --git a/scripts/format.lisp b/scripts/format.lisp
index 3d55d0b..1dba856 100644
--- a/scripts/format.lisp
+++ b/scripts/format.lisp
@@ -1,5 +1,6 @@
 (defpackage :kiln/scripts/format
   (:use :cl :alexandria :serapeum :kiln)
+  (:import-from :clawk)
   (:import-from :clingon)
   (:documentation "Use format like awk"))
 (in-package :kiln/scripts/format)
@@ -34,8 +35,8 @@
       (let ((list? (clingon:getopt opts :list)))
         (with-boolean (list?)
           (let ((formatter (compile nil (eval `(formatter ,control-string)))))
-            (do-lines (line)
-              (let ((fields (fields line field-separator)))
+            (clawk:for-stream-lines (*standard-input*)
+              (let ((fields (clawk:split nil field-separator)))
                 (:if list?
                      (format t formatter fields)
                      (format t "~?" formatter fields))))))))))
diff --git a/utils.lisp b/utils.lisp
index 12722e4..de13f60 100644
--- a/utils.lisp
+++ b/utils.lisp
@@ -3,7 +3,7 @@
   (:use :cl :alexandria :serapeum :named-readtables)
   (:use-reexport :kiln/os :kiln/tty)
   (:import-from :cffi)
-  (:import-from :cl-ppcre)
+  (:import-from :clawk)
   (:import-from :kiln/dispatch :invoke-script)
   (:import-from :kiln/flags :dbg)
   (:local-nicknames
@@ -21,40 +21,6 @@
 (in-package :kiln/utils)
 (in-readtable :interpol-syntax)
 
-(defun walk-lines (fn &optional (source *standard-input*))
-  (etypecase source
-    (null
-     (walk-lines fn *standard-input*))
-    (stream
-     (fbind fn
-       (loop for line = (read-line source nil nil)
-             while line
-             do (fn line))))
-    (string
-     (with-input-from-string (stream source)
-       (walk-lines fn stream)))))
-
-(defmacro do-lines ((line &optional source return) &body body)
-  `(do-lines-1 (,line ,source ,return)
-     ,@body))
-
-(define-do-macro do-lines-1 ((line source &optional return) &body body)
-  (with-thunk (body line)
-    `(walk-lines ,body ,source)))
-
-(defun fields (string &optional (split-on #'whitespacep))
-  (etypecase split-on
-    (function
-     (split-sequence-if split-on string))
-    ((eql #\Space)
-     (fields string #'whitespacep))
-    (character
-     (split-sequence split-on string))
-    (string
-     (if (single split-on)
-         (split-sequence (character split-on) string)
-         (cl-ppcre:split split-on string)))))
-
 (defun interpolate-escapes (string)
   (let ((interpol:*inner-delimiters* nil)
         (*readtable*