c15cbbfc3d37

--- a/src/base.lisp	Fri Aug 07 14:50:01 2020 -0400
+++ b/src/base.lisp	Tue Oct 06 19:21:14 2020 -0400
@@ -61,20 +61,6 @@
     (setf *stack* (car *previous*))))
 
 
-;;;; Misc ---------------------------------------------------------------------
-(defun sh (command &key (input "") output)
-  (uiop:run-program command
-                    :output (when output :string)
-                    :input (make-string-input-stream input)))
-
-(defun pbcopy (object)
-  (sh '("pbcopy") :input (aesthetic-string object))
-  (values))
-
-(defun pbpaste ()
-  (values (sh '("pbpaste") :output t)))
-
-
 ;;;; Help ---------------------------------------------------------------------
 (defun first-letter (command)
   (let ((ch (aref (symbol-name command) 0)))
@@ -107,7 +93,7 @@
           ~@
           What happens when a form is read depends on the form:~@
           ~@
-          * Numbers are pushed onto the stack.~@
+          * Numbers and characters are pushed onto the stack.~@
           * Symbols run commands.~@
           * Quoted forms are pushed onto the stack.~@
           ~@
@@ -272,6 +258,14 @@
   "Do nothing.")
 
 
+;;;; Commands/Misc ------------------------------------------------------------
+(define-command char-code (char)
+  (push! (char-code char)))
+
+(define-command code-char (code)
+  (push! (code-char code)))
+
+
 ;;;; Special Forms ------------------------------------------------------------
 (defgeneric special-form (symbol &rest body))
 
@@ -306,7 +300,7 @@
   (with-errors-handled
     (catch :do-not-add-undo-state
       (etypecase input
-        ((or number string) (push! input))
+        ((or number string character) (push! input))
         (symbol (command input))
         (cons (apply 'special-form input)))
       (save-stack))))

--- a/src/math.lisp	Fri Aug 07 14:50:01 2020 -0400
+++ b/src/math.lisp	Tue Oct 06 19:21:14 2020 -0400
@@ -86,6 +86,22 @@
   (setf *print-base* n
         *read-base* n))
 
+(define-command bits (x)
+  "Pop the top of the stack and print its binary representation."
+  (unless (typep x '(integer 0 *))
+    (error "BITS requires a nonnegative integer."))
+  (format t "~v,'0,' ,4:B~%"
+          (let ((chunks (ceiling (integer-length x) 4)))
+            (+ (* 4 chunks) ; actual bits
+               (1- chunks))) ; comma chars
+          x))
+
+(define-command hex (x)
+  "Pop the top of the stack and print its hex representation."
+  (unless (typep x '(integer 0 *))
+    (error "HEX requires a nonnegative integer."))
+  (format t "~X~%" x))
+
 (define-command base10 ()
   "Set the print base and read base for numbers to base 10."
   (let ((pb *print-base*)