style(3p/lisp): expand tabs in npg, mime4cl and sclf r/3675

Done using

    find third_party/lisp/{sclf,mime4cl,npg} \
      -name '*.lisp' -or -name '*.asd' \
      -exec bash -c 'expand -i -t 8 "$0" | sponge "$0"' {} \;

Change-Id: If84afac9c1d5cbc74e137a5aa0ae61472f0f1e90
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5066
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>

10 files changed, 1115 insertions, 1115 deletions

diff --git a/third_party/lisp/sclf/directory.lisp b/third_party/lisp/sclf/directory.lisp
index 4684a8e7056a..3e479c4ac279 100644
--- a/third_party/lisp/sclf/directory.lisp
+++ b/third_party/lisp/sclf/directory.lisp
@@ -29,25 +29,25 @@
   (setf pathname (pathname pathname))
   (if (pathname-name pathname)
       (make-pathname :directory (append (or (pathname-directory pathname)
-					    '(:relative))
-					(list (file-namestring pathname)))
-		     :name nil
-		     :type nil
-		     :defaults pathname)
+                                            '(:relative))
+                                        (list (file-namestring pathname)))
+                     :name nil
+                     :type nil
+                     :defaults pathname)
       pathname))
 
 (defun d+ (path &rest rest)
   "Concatenate directory pathname parts and return a pathname."
   (make-pathname :defaults path
-		 :directory (append (pathname-directory path) rest)))
+                 :directory (append (pathname-directory path) rest)))
 
 (defun delete-directory (pathname)
   "Remove directory PATHNAME.  Return PATHNAME."
   #+cmu (multiple-value-bind (done errno)
-	     (unix:unix-rmdir (namestring pathname))
-	   (unless done
-	     (error "Unable to delete directory ~A (errno=~A)"
-		    pathname errno)))
+             (unix:unix-rmdir (namestring pathname))
+           (unless done
+             (error "Unable to delete directory ~A (errno=~A)"
+                    pathname errno)))
   #+sbcl (sb-posix:rmdir pathname)
   #+lispworks (lw:delete-directory pathname)
   #-(or cmu sbcl)
@@ -60,11 +60,11 @@ to follow symbolic links."
   #-(or sbcl cmu) (declare (ignore truenamep))
   (let (#+cmu (lisp::*ignore-wildcards* t))
     (directory (make-pathname :defaults (pathname-as-directory pathname)
-			      :name :wild
-			      :type :wild
-			      :version :wild)
-	       #+cmu :truenamep #+cmu truenamep
-	       #+sbcl :resolve-symlinks #+sbcl truenamep)))
+                              :name :wild
+                              :type :wild
+                              :version :wild)
+               #+cmu :truenamep #+cmu truenamep
+               #+sbcl :resolve-symlinks #+sbcl truenamep)))
 
 (defun traverse-directory-tree (root-pathname proc &key truenamep test depth-first)
   "Call PROC on all pathnames under ROOT-PATHNAME, both files and
@@ -76,42 +76,42 @@ broken symbolic links in your filesystem."
   (check-type proc (or function symbol))
   (check-type test (or function symbol null))
   (labels ((ls (dir)
-	     (declare (type pathname dir))
-	     (list-directory dir :truenamep truenamep))
-	   (traverse? (file)
-	     (declare (type pathname file))
-	     (and (not (pathname-name file))
-		  (or truenamep
-		      (not (symbolic-link-p file)))
-		  (or (not test)
-		      (funcall test file))))
-	   (traverse-pre-order (dir)
-	     (declare (type pathname dir))
-	     (loop
-		for file in (ls dir)
-		do (funcall proc file)
-		when (traverse? file)
-		do (traverse-pre-order file)))
-	   (traverse-post-order (dir)
-	     (declare (type pathname dir))
-	     (loop
-		for file in (ls dir)
-		when (traverse? file)
-		do (traverse-post-order file)
-		do (funcall proc file))))
+             (declare (type pathname dir))
+             (list-directory dir :truenamep truenamep))
+           (traverse? (file)
+             (declare (type pathname file))
+             (and (not (pathname-name file))
+                  (or truenamep
+                      (not (symbolic-link-p file)))
+                  (or (not test)
+                      (funcall test file))))
+           (traverse-pre-order (dir)
+             (declare (type pathname dir))
+             (loop
+                for file in (ls dir)
+                do (funcall proc file)
+                when (traverse? file)
+                do (traverse-pre-order file)))
+           (traverse-post-order (dir)
+             (declare (type pathname dir))
+             (loop
+                for file in (ls dir)
+                when (traverse? file)
+                do (traverse-post-order file)
+                do (funcall proc file))))
     (if depth-first
-	(traverse-post-order root-pathname)
-	(traverse-pre-order root-pathname))
+        (traverse-post-order root-pathname)
+        (traverse-pre-order root-pathname))
     (values)))
 
 (defmacro do-directory-tree ((file root-pathname &key truenamep test depth-first) &body body)
   "Call TRAVERSE-DIRECTORY-TREE with BODY es procedure."
   `(traverse-directory-tree ,root-pathname
-			    #'(lambda (,file)
-				,@body)
-			    :truenamep ,truenamep
-			    :test ,test
-			    :depth-first ,depth-first))
+                            #'(lambda (,file)
+                                ,@body)
+                            :truenamep ,truenamep
+                            :test ,test
+                            :depth-first ,depth-first))
 
 (defun empty-directory-p (pathname)
   (and (directory-p pathname)
@@ -142,7 +142,7 @@ system.)"
   (be files '()
     (do-directory-tree (file root-pathname :truenamep truenamep)
       (when (funcall matcher-function file)
-	(push file files)))
+        (push file files)))
     (nreverse files)))
 
 (defun delete-directory-tree (pathname)
@@ -156,17 +156,17 @@ this function in your programs."
   (if (pathname-name pathname)
       (delete-file pathname)
       (progn
-	(dolist (file (list-directory pathname))
-	  (delete-directory-tree file))
-	(delete-directory pathname))))
+        (dolist (file (list-directory pathname))
+          (delete-directory-tree file))
+        (delete-directory pathname))))
 
 (defun make-directory (pathname &optional (mode #o777))
   "Create a new directory in the filesystem.  Permissions MODE
 will be assigned to it.  Return PATHNAME."
   #+cmu (multiple-value-bind (done errno)
-	    (unix:unix-mkdir (native-namestring pathname) mode)
-	  (unless done
-	    (error "Unable to create directory ~A (errno=~A)." pathname errno)))
+            (unix:unix-mkdir (native-namestring pathname) mode)
+          (unless done
+            (error "Unable to create directory ~A (errno=~A)." pathname errno)))
   #+sbcl (sb-posix:mkdir pathname mode)
   #-(or cmu sbcl)
   (error "MAKE-DIRECTORY is not implemented for this Lisp system.")
@@ -180,19 +180,19 @@ will be assigned to it.  Return PATHNAME."
   "Just like ENSURE-DIRECTORIES-EXIST but, in some situations,
 it's faster."
   (labels ((ensure (path)
-	     (unless (probe-file path)
-	       (be* tail (last (pathname-directory path) 2)
-		    last (cdr tail)
-		 (setf (cdr tail) nil)
-		 (unwind-protect
-		      (ensure path)
-		   (setf (cdr tail) last))
-		 (make-directory path mode)
-		 (when verbose
-		   (format t "Created ~S~%" path))))))
+             (unless (probe-file path)
+               (be* tail (last (pathname-directory path) 2)
+                    last (cdr tail)
+                 (setf (cdr tail) nil)
+                 (unwind-protect
+                      (ensure path)
+                   (setf (cdr tail) last))
+                 (make-directory path mode)
+                 (when verbose
+                   (format t "Created ~S~%" path))))))
     (ensure (make-pathname :defaults pathname
-			   :name nil :type nil
-			   :version nil))))
+                           :name nil :type nil
+                           :version nil))))
 
 (defun make-temp-directory (&optional (default-pathname *tmp-file-defaults*) (mode #o777))
   "Create a new directory and return its pathname.
@@ -212,7 +212,7 @@ BODY returns.  BODY is _not_ executed within the PATH directory; the
 working directory is never changed."
   `(be ,path (make-temp-directory ,@make-temp-directory-args)
      (unwind-protect
-	  (progn ,@body)
+          (progn ,@body)
        (delete-directory-tree ,path))))
 
 (defun current-directory ()
@@ -229,44 +229,44 @@ are defined."
     ;; we should discard and replace whatever has been defined in any
     ;; rc file during compilation
     (setf (logical-pathname-translations "home")
-	  (list
-	   (list "**;*.*.*"
-		 (make-pathname :defaults home
-				:directory (append (pathname-directory home)
-						   '(:wild-inferiors))
-				:name :wild
-				:type :wild))))))
+          (list
+           (list "**;*.*.*"
+                 (make-pathname :defaults home
+                                :directory (append (pathname-directory home)
+                                                   '(:wild-inferiors))
+                                :name :wild
+                                :type :wild))))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defun parse-native-namestring (string &optional host (defaults *default-pathname-defaults*)
-				&key (start 0) end junk-allowed)
+                                &key (start 0) end junk-allowed)
   #+sbcl (sb-ext:parse-native-namestring string host defaults
-					 :start start
-					 :end end
-					 :junk-allowed junk-allowed)
+                                         :start start
+                                         :end end
+                                         :junk-allowed junk-allowed)
   #-sbcl (let (#+cmu(lisp::*ignore-wildcards* t))
-	   (parse-namestring string host defaults
-			     :start start
-			     :end end
-			     :junk-allowed junk-allowed)))
+           (parse-namestring string host defaults
+                             :start start
+                             :end end
+                             :junk-allowed junk-allowed)))
 
 (defun native-namestring (pathname)
   #+sbcl (sb-ext:native-namestring pathname)
   #-sbcl (let (#+cmu (lisp::*ignore-wildcards* t))
-	   (namestring pathname)))
+           (namestring pathname)))
 
 (defun native-file-namestring (pathname)
   #+sbcl (sb-ext:native-namestring
-	  (make-pathname :name (pathname-name pathname)
-			 :type (pathname-type pathname)))
+          (make-pathname :name (pathname-name pathname)
+                         :type (pathname-type pathname)))
   #+cmu (be lisp::*ignore-wildcards* t
-	  (file-namestring pathname)))
+          (file-namestring pathname)))
 
 (defun native-pathname (thing)
   #+sbcl (sb-ext:native-pathname thing)
   #+cmu (be lisp::*ignore-wildcards* t
-	  (pathname thing)))
+          (pathname thing)))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
@@ -277,9 +277,9 @@ are defined."
 (defun directory-p (pathname)
   "Return true if PATHNAME names a directory on the filesystem."
   #-clisp (awhen (unix-stat (native-namestring pathname))
-	    (bits-set-p (stat-mode it)
-			#+sbcl sb-posix:s-ifdir
-			#+cmu unix:s-ifdir))
+            (bits-set-p (stat-mode it)
+                        #+sbcl sb-posix:s-ifdir
+                        #+cmu unix:s-ifdir))
   #+clisp (ext:probe-directory (pathname-as-directory pathname)))
 
 (defun regular-file-p (pathname)
@@ -287,8 +287,8 @@ are defined."
   #-(or sbcl cmu) (error "don't know how to check whether a file might be a regular file")
   (awhen (unix-stat (native-namestring pathname))
     (bits-set-p (stat-mode it)
-		#+sbcl sb-posix:s-ifreg
-		#+cmu unix:s-ifreg)))
+                #+sbcl sb-posix:s-ifreg
+                #+cmu unix:s-ifreg)))
 
 (defun file-readable-p (pathname)
   #+sbcl (sb-unix:unix-access (native-namestring pathname) sb-unix:r_ok)
@@ -324,27 +324,27 @@ are defined."
 (defun unix-stat (pathname)
   ;; this could be different depending on the unix systems
   (multiple-value-bind (ok? device inode mode links uid gid rdev
-			    size atime mtime ctime
-			    blksize blocks)
+                            size atime mtime ctime
+                            blksize blocks)
       (#+cmu unix:unix-lstat
        #+sbcl sb-unix:unix-lstat
        (if (stringp pathname)
-	   pathname
-	   (native-namestring pathname)))
+           pathname
+           (native-namestring pathname)))
     (declare (ignore rdev))
     (when ok?
       (make-unix-file-stat :device device
-			   :inode inode
-			   :links links
-			   :atime atime
-			   :mtime mtime
-			   :ctime ctime
-			   :size size
-			   :blksize blksize
-			   :blocks blocks
-			   :uid uid
-			   :gid gid
-			   :mode mode))))
+                           :inode inode
+                           :links links
+                           :atime atime
+                           :mtime mtime
+                           :ctime ctime
+                           :size size
+                           :blksize blksize
+                           :blocks blocks
+                           :uid uid
+                           :gid gid
+                           :mode mode))))
 
 (defun stat-modification-time (stat)
   "Return the modification time of the STAT structure as Lisp
@@ -383,9 +383,9 @@ contents."
 (defun symbolic-link-p (pathname)
   #-(or sbcl cmu) (error "don't know hot to test for symbolic links.")
   (aand (unix-stat pathname)
-	(bits-set-p (stat-mode it)
-		    #+sbcl sb-posix:s-iflnk
-		    #+cmu unix:s-iflnk)))
+        (bits-set-p (stat-mode it)
+                    #+sbcl sb-posix:s-iflnk
+                    #+cmu unix:s-iflnk)))
 
 (defun broken-link-p (pathname)
  (when (symbolic-link-p pathname)
diff --git a/third_party/lisp/sclf/lazy.lisp b/third_party/lisp/sclf/lazy.lisp
index 18f6bfdb7109..34bae82ebb64 100644
--- a/third_party/lisp/sclf/lazy.lisp
+++ b/third_party/lisp/sclf/lazy.lisp
@@ -41,13 +41,13 @@
   (if (forced-p promise)
       (promise-value promise)
       (prog1 (setf (promise-value promise)
-		   (funcall (promise-procedure promise)))
-	(setf (promise-procedure promise) nil))))
+                   (funcall (promise-procedure promise)))
+        (setf (promise-procedure promise) nil))))
 
 (defmacro deflazy (name value &optional documentation)
   `(defparameter ,name (lazy ,value)
      ,@(when documentation
-	     (list documentation))))
+             (list documentation))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
@@ -71,8 +71,8 @@ any other."))
 
 (defclass lazy-slot-mixin ()
   ((lazy-function :initarg :lazy
-		   :reader lazy-slot-function
-		   :initform nil))
+                   :reader lazy-slot-function
+                   :initform nil))
   (:documentation
    "Slot for LAZY-METACLASS classes.  Lazy slots must be declared with
 the argument :LAZY which must be a function accepting the object
@@ -100,20 +100,20 @@ instance as argument."))
   (let ((ds (car direct-slots)))
     (if (typep ds 'lazy-direct-slot-definition)
       (let ((form (lazy-slot-function ds))
-	    (args (call-next-method)))
-	(when (or (getf args :initarg)
-		  (getf args :initform))
-	  (error "Lazy slot ~S cannot have :INITARG nor :INITFORM arguments." ds))
-	(list* :lazy
-	       (cond ((and (listp form)
-			   (eq 'lambda (car form)))
-		      (compile nil form))
-		     ((symbolp form)
-		      form)
-		     (t (compile nil `(lambda (self)
-					(declare (ignorable self))
-					,form))))
-	       args))
+            (args (call-next-method)))
+        (when (or (getf args :initarg)
+                  (getf args :initform))
+          (error "Lazy slot ~S cannot have :INITARG nor :INITFORM arguments." ds))
+        (list* :lazy
+               (cond ((and (listp form)
+                           (eq 'lambda (car form)))
+                      (compile nil form))
+                     ((symbolp form)
+                      form)
+                     (t (compile nil `(lambda (self)
+                                        (declare (ignorable self))
+                                        ,form))))
+               args))
       (call-next-method))))
 
 (defmethod slot-value-using-class ((class lazy-metaclass) instance (slot lazy-slot-mixin))
@@ -122,7 +122,7 @@ instance as argument."))
   ;; instance and memoize the value in the slot.
   (unless (slot-boundp-using-class class instance slot)
     (setf (slot-value-using-class class instance slot)
-	  (funcall (lazy-slot-function slot) instance)))
+          (funcall (lazy-slot-function slot) instance)))
   (call-next-method))
 
 (defun reset-lazy-slots (object)
@@ -131,4 +131,4 @@ re-evaluated next time their value is requested again."
   (be* class (class-of object)
     (dolist (slot (class-slots class))
       (when (typep slot 'lazy-effective-slot-definition)
-	(slot-makunbound object (slot-definition-name slot))))))
\ No newline at end of file
+        (slot-makunbound object (slot-definition-name slot))))))
\ No newline at end of file
diff --git a/third_party/lisp/sclf/mp/cmu.lisp b/third_party/lisp/sclf/mp/cmu.lisp
index 6617f6dadd5d..1bdbba79896f 100644
--- a/third_party/lisp/sclf/mp/cmu.lisp
+++ b/third_party/lisp/sclf/mp/cmu.lisp
@@ -30,14 +30,14 @@
 
 (defmacro with-lock-held ((lock &key whostate (wait t) timeout) &body forms)
   `(mp:with-lock-held (,lock ,(or whostate "Lock Wait")
-			     :wait wait
-			     ,@(when timeout (list :timeout timeout)))
+                             :wait wait
+                             ,@(when timeout (list :timeout timeout)))
      ,@forms))
 
 (defmacro with-recursive-lock-held ((lock &key wait timeout) &body forms)
   `(mp:with-lock-held (,lock
-		       ,@(when wait (list :wait wait))
-		       ,@(when timeout (list :timeout timeout)))
+                       ,@(when wait (list :wait wait))
+                       ,@(when timeout (list :timeout timeout)))
      ,@forms))
 
 (defstruct condition-variable
@@ -47,31 +47,31 @@
 
 (defun %release-lock (lock) ; copied from with-lock-held in multiproc.lisp
   #+i486 (kernel:%instance-set-conditional
-	  lock 2 mp:*current-process* nil)
+          lock 2 mp:*current-process* nil)
   #-i486 (when (eq (lock-process lock) mp:*current-process*)
-	   (setf (lock-process lock) nil)))
+           (setf (lock-process lock) nil)))
 
 (defun condition-wait (cv lock &optional timeout)
   (declare (ignore timeout))		;For now
   (loop
      (let ((cv-lock (condition-variable-lock cv)))
        (with-lock-held (cv-lock)
-	 (when (condition-variable-value cv)
-	   (setf (condition-variable-value cv) nil)
-	   (return-from condition-wait t))
-	 (setf (condition-variable-process-queue cv)
-	       (nconc (condition-variable-process-queue cv)
-		      (list mp:*current-process*)))
-	 (%release-lock lock))
+         (when (condition-variable-value cv)
+           (setf (condition-variable-value cv) nil)
+           (return-from condition-wait t))
+         (setf (condition-variable-process-queue cv)
+               (nconc (condition-variable-process-queue cv)
+                      (list mp:*current-process*)))
+         (%release-lock lock))
        (mp:process-add-arrest-reason mp:*current-process* cv)
        (let ((cv-val nil))
-	 (with-lock-held (cv-lock)
-	   (setq cv-val (condition-variable-value cv))
-	   (when cv-val
-	     (setf (condition-variable-value cv) nil)))
-	 (when cv-val
-	   (mp::lock-wait lock "waiting for condition variable lock")
-	   (return-from condition-wait t))))))
+         (with-lock-held (cv-lock)
+           (setq cv-val (condition-variable-value cv))
+           (when cv-val
+             (setf (condition-variable-value cv) nil)))
+         (when cv-val
+           (mp::lock-wait lock "waiting for condition variable lock")
+           (return-from condition-wait t))))))
 
 (defun condition-notify (cv)
   (with-lock-held ((condition-variable-lock cv))
@@ -79,12 +79,12 @@
       ;; The waiting process may have released the CV lock but not
       ;; suspended itself yet
       (when proc
-	(loop
-	 for activep = (mp:process-active-p proc)
-	 while activep
-	 do (mp:process-yield))
-	(setf (condition-variable-value cv) t)
-	(mp:process-revoke-arrest-reason proc cv))))
+        (loop
+         for activep = (mp:process-active-p proc)
+         while activep
+         do (mp:process-yield))
+        (setf (condition-variable-value cv) t)
+        (mp:process-revoke-arrest-reason proc cv))))
   ;; Give the other process a chance
   (mp:process-yield))
 
@@ -100,7 +100,7 @@
 (defun destroy-process (process)
   ;; silnetly ignore a process that is trying to destroy itself
   (unless (eq (mp:current-process)
-	      process)
+              process)
     (mp:destroy-process process)))
 
 (defun restart-process (process)
diff --git a/third_party/lisp/sclf/mp/sbcl.lisp b/third_party/lisp/sclf/mp/sbcl.lisp
index 7f47ec9c615f..a2cf497ff9bf 100644
--- a/third_party/lisp/sclf/mp/sbcl.lisp
+++ b/third_party/lisp/sclf/mp/sbcl.lisp
@@ -24,8 +24,8 @@
 (in-package :sclf)
 
 (defstruct (process
-	     (:constructor %make-process)
-	     (:predicate processp))
+             (:constructor %make-process)
+             (:predicate processp))
   name
   state
   whostate
@@ -53,10 +53,10 @@
 (defmacro get-mutex (mutex &optional (wait t))
   `(
     #+#.(cl:if (cl:find-symbol "GRAB-MUTEX" "SB-THREAD") '(and) '(or))
-	sb-thread:grab-mutex
-	#-#.(cl:if (cl:find-symbol "GRAB-MUTEX" "SB-THREAD") '(and) '(or))
-	sb-thread:get-mutex
-	,mutex :waitp ,wait))
+        sb-thread:grab-mutex
+        #-#.(cl:if (cl:find-symbol "GRAB-MUTEX" "SB-THREAD") '(and) '(or))
+        sb-thread:get-mutex
+        ,mutex :waitp ,wait))
 
 (defvar *permanent-queue*
   (sb-thread:make-mutex :name "Lock for disabled threads"))
@@ -65,7 +65,7 @@
 
 (defun make-process (function &key name)
   (let ((p (%make-process :name name
-			  :function function)))
+                          :function function)))
     (sb-thread:with-mutex (*all-processes-lock*)
       (pushnew p *all-processes*))
     (restart-process p)))
@@ -73,7 +73,7 @@
 (defun process-kill-thread (process)
   (let ((thread (process-thread process)))
     (when (and thread
-	       (sb-thread:thread-alive-p thread))
+               (sb-thread:thread-alive-p thread))
       (assert (not (eq thread sb-thread:*current-thread*)))
       (sb-thread:terminate-thread thread)
       ;; Wait until all the clean-up forms are done.
@@ -85,13 +85,13 @@
 
 (defun restart-process (p)
   (labels ((boing ()
-	     (let ((*current-process* p)
-		   (function (process-function p)))
-	       (when function
-		 (funcall function)))))
+             (let ((*current-process* p)
+                   (function (process-function p)))
+               (when function
+                 (funcall function)))))
     (process-kill-thread p)
     (when (setf (process-thread p)
-		(sb-thread:make-thread #'boing :name (process-name p)))
+                (sb-thread:make-thread #'boing :name (process-name p)))
       p)))
 
 (defun destroy-process (process)
@@ -115,26 +115,26 @@
 (defun process-wait (reason predicate)
   (let ((old-state (process-whostate *current-process*)))
     (unwind-protect
-	 (progn
-	   (setf old-state (process-whostate *current-process*)
-		 (process-whostate *current-process*) reason)
-	   (until (funcall predicate)
-	     (process-yield)))
+         (progn
+           (setf old-state (process-whostate *current-process*)
+                 (process-whostate *current-process*) reason)
+           (until (funcall predicate)
+             (process-yield)))
       (setf (process-whostate *current-process*) old-state))))
 
 (defun process-wait-with-timeout (reason timeout predicate)
   (let ((old-state (process-whostate *current-process*))
-	(end-time (+ (get-universal-time) timeout)))
+        (end-time (+ (get-universal-time) timeout)))
     (unwind-protect
-	 (progn
-	   (setf old-state (process-whostate *current-process*)
-		 (process-whostate *current-process*) reason)
-	   (loop 
-	      for result = (funcall predicate)
-	      until (or result
-			(> (get-universal-time) end-time))
-	      do (process-yield)
-	      finally (return result)))
+         (progn
+           (setf old-state (process-whostate *current-process*)
+                 (process-whostate *current-process*) reason)
+           (loop 
+              for result = (funcall predicate)
+              until (or result
+                        (> (get-universal-time) end-time))
+              do (process-yield)
+              finally (return result)))
       (setf (process-whostate *current-process*) old-state))))
 
 (defun process-interrupt (process function)
@@ -175,13 +175,13 @@
   (let ((old-state (gensym "OLD-STATE")))
     `(sb-thread:with-mutex (,place :wait-p ,wait)
        (let (,old-state)
-	 (unwind-protect
-	      (progn
-		(when ,state
-		  (setf ,old-state (process-state *current-process*))
-		  (setf (process-state *current-process*) ,state))
-		,@body)
-	   (setf (process-state *current-process*) ,old-state))))))
+         (unwind-protect
+              (progn
+                (when ,state
+                  (setf ,old-state (process-state *current-process*))
+                  (setf (process-state *current-process*) ,state))
+                ,@body)
+           (setf (process-state *current-process*) ,old-state))))))
 
 
 (defun make-recursive-lock (&optional name)
@@ -193,24 +193,24 @@
   `(sb-thread:with-recursive-lock (,place)
     (let (,old-state)
       (unwind-protect
-	   (progn
-	     (when ,state
-	       (setf ,old-state (process-state *current-process*))
-	       (setf (process-state *current-process*) ,state))
-	     ,@body)
-	(setf (process-state *current-process*) ,old-state))))))
+           (progn
+             (when ,state
+               (setf ,old-state (process-state *current-process*))
+               (setf (process-state *current-process*) ,state))
+             ,@body)
+        (setf (process-state *current-process*) ,old-state))))))
 
 (defun make-condition-variable () (sb-thread:make-waitqueue))
 
 (defun condition-wait (cv lock &optional timeout)
   (if timeout
       (handler-case 
-	  (sb-ext:with-timeout timeout
-	    (sb-thread:condition-wait cv lock)
-	    t)
-	(sb-ext:timeout (c)
-	  (declare (ignore c))
-	  nil))
+          (sb-ext:with-timeout timeout
+            (sb-thread:condition-wait cv lock)
+            t)
+        (sb-ext:timeout (c)
+          (declare (ignore c))
+          nil))
       (progn (sb-thread:condition-wait cv lock) t)))
 
 (defun condition-notify (cv)
diff --git a/third_party/lisp/sclf/package.lisp b/third_party/lisp/sclf/package.lisp
index 652194f93cad..565ab301c7e8 100644
--- a/third_party/lisp/sclf/package.lisp
+++ b/third_party/lisp/sclf/package.lisp
@@ -25,234 +25,234 @@
 
 (defpackage :sclf
   (:use :common-lisp
-	;; we need the MOP for lazy.lisp and serial.lisp
-	#+cmu :pcl
-	#+sbcl :sb-mop)
+        ;; we need the MOP for lazy.lisp and serial.lisp
+        #+cmu :pcl
+        #+sbcl :sb-mop)
   ;; Don't know why but compute-effective-slot-definition-initargs is
   ;; internal in both CMUCL and SBCL
   (:import-from #+cmu"PCL" #+sbcl"SB-PCL"
-		#-(or cmu sbcl) "CLOS"
-		"COMPUTE-EFFECTIVE-SLOT-DEFINITION-INITARGS")
+                #-(or cmu sbcl) "CLOS"
+                "COMPUTE-EFFECTIVE-SLOT-DEFINITION-INITARGS")
   #+cmu (:import-from :mp
-		      #:make-process
-		      #:current-process
-		      #:all-processes
-		      #:processp
-		      #:process-name
-		      #:process-state
-		      #:process-whostate
-		      #:process-wait
-		      #:process-wait-with-timeout
-		      #:process-yield
-		      #:process-interrupt
-		      #:disable-process
-		      #:enable-process
-		      #:without-scheduling
-		      #:atomic-incf
-		      #:atomic-decf
-		      #:process-property-list)
+                      #:make-process
+                      #:current-process
+                      #:all-processes
+                      #:processp
+                      #:process-name
+                      #:process-state
+                      #:process-whostate
+                      #:process-wait
+                      #:process-wait-with-timeout
+                      #:process-yield
+                      #:process-interrupt
+                      #:disable-process
+                      #:enable-process
+                      #:without-scheduling
+                      #:atomic-incf
+                      #:atomic-decf
+                      #:process-property-list)
   (:export #:be #:be*
-	   #:defconst
-	   #:with-gensyms
-	   #:d+
-	   #:s+
-	   #:f++
-	   #:list->string
-	   #:string-starts-with #:string-ends-with
-	   #:aif #:awhen #:acond #:aand #:acase #:it
-	   #:+whitespace+
-	   #:string-trim-whitespace
-	   #:string-right-trim-whitespace
-	   #:string-left-trim-whitespace
-	   #:whitespace-p #:seq-whitespace-p
-	   #:not-empty
-	   #:position-any
-	   #:+month-names+
-	   #:find-any
-	   #:split-at
-	   #:split-string-at-char
-	   #:week-day->string
-	   #:month->string
-	   #:month-string->number
-	   #:add-months #:add-days
-	   #:read-whole-stream
-	   #:read-file #:write-file #:read-lines
-	   #:read-from-file #:write-to-file
-	   #:string-concat
-	   #:gcase
-	   #:string-truncate
-	   #:promise #:force #:forced-p #:lazy #:deflazy #:lazy-metaclass #:self #:reset-lazy-slots
-	   #:copy-stream #:copy-file
-	   #:symlink-file
-	   #:keywordify
-	   #:until
-	   #:year #:month #:day #:hour #:minute #:week-day #:week #:day-of-the-year
-	   #:beginning-of-week #:end-of-week
-	   #:next-week-day #:next-monday #:full-weeks-in-span
-	   #:beginning-of-first-week #:end-of-last-week
-	   #:beginning-of-month #:end-of-month
-	   #:locate-system-program
-	   #:*tmp-file-defaults*
-	   #:temp-file-name
-	   #:open-temp-file
-	   #:with-temp-file
-	   #:file-size
-	   #:getenv
-	   #:with-system-environment
-	   #:time-string #:iso-time-string #:parse-iso-time-string
-	   #:soundex
-	   #:string-soundex=
-	   #:lru-cache
-	   #:getcache #:cached
-	   #:print-time-span
-	   #:double-linked-list #:limited-list #:sorted-list
-	   #:insert #:size
-	   #:heap #:heap-add #:heap-pop #:heap-empty-p
-	   #:double-linked-element #:make-double-linked-element #:double-linked-element-p
-	   #:dle-previous #:dle-next #:dle-value
-	   #:cons-dle #:dle-remove #:dle-map #:do-dle :do-dle*
-	   #:sl-map #:do-dll #:do-dll*
-	   #:dll-find #:dll-find-cursor
-	   #:push-first #:push-last #:dll-remove
-	   #:pop-first #:pop-last
-	   #:leap-year-p #:last-day-of-month
-	   #:getuid #:setuid #:with-euid
-	   #:get-logname #:get-user-name #:get-user-home #:find-uid
-	   #:super-user-p
-	   #:pathname-as-directory #:pathname-as-file
-	   #:alist->plist #:plist->alist
-	   #:byte-vector->string
-	   #:string->byte-vector
-	   #:outdated-p
-	   #:with-hidden-temp-file
-	   #:let-places #:let-slots
-	   #:*decimal-point*
-	   #:*thousands-comma*
-	   #:format-amount #:parse-amount
-	   #:with-package
-	   #:make-directory #:ensure-directory
-	   #:make-temp-directory
-	   #:with-temp-directory
-	   #:delete-directory
-	   #:delete-directory-tree
-	   #:do-directory-tree
-	   #:traverse-directory-tree
-	   #:empty-directory-p
-	   #:remove-empty-directories
-	   #:map-directory-tree
-	   #:find-files
-	   #:directory-p
-	   #:regular-file-p
-	   #:file-readable-p
-	   #:file-writable-p
-	   #:file-executable-p
-	   #:current-directory
-	   #:ensure-home-translations
-	   #:list-directory
-	   #:string-escape
-	   #:string-substitute
-	   #:bytes-simple-string
-	   #:make-lock-files
-	   #:with-lock-files
-	   #:getpid
-	   #:on-error
-	   #:floor-to
-	   #:round-to
-	   #:ceiling-to
-	   #:insert-in-order
-	   #:forget-documentation
-	   #:load-compiled
-	   #:swap
-	   #:queue #:make-queue #:queue-append #:queue-pop #:queue-empty-p
-	   #:unix-stat #:unix-file-stat
-	   #:stat-device
-	   #:stat-inode
-	   #:stat-links
-	   #:stat-atime
-	   #:stat-mtime
-	   #:stat-ctime
-	   #:stat-birthtime
-	   #:stat-size
-	   #:stat-blksize
-	   #:stat-blocks
-	   #:stat-uid
-	   #:stat-gid
-	   #:stat-mode
-	   #:save-file-excursion
-	   #:stat-modification-time
-	   #:stat-creation-time
-	   #:file-modification-time
-	   #:file-creation-time
-	   #:show
-	   #:memoize-function
-	   #:memoized
-	   #:defun-memoized
-	   #:parse-native-namestring
-	   #:native-file-namestring
-	   #:native-namestring
-	   #:native-pathname
-	   #:read-symbolic-link
-	   #:symbolic-link-p
-	   #:broken-link-p
-	   #:circular-list
-	   #:last-member
-	   #:glob->regex
-	   #:universal->unix-time #:unix->universal-time
-	   #:get-unix-time
-	   #:move-file
+           #:defconst
+           #:with-gensyms
+           #:d+
+           #:s+
+           #:f++
+           #:list->string
+           #:string-starts-with #:string-ends-with
+           #:aif #:awhen #:acond #:aand #:acase #:it
+           #:+whitespace+
+           #:string-trim-whitespace
+           #:string-right-trim-whitespace
+           #:string-left-trim-whitespace
+           #:whitespace-p #:seq-whitespace-p
+           #:not-empty
+           #:position-any
+           #:+month-names+
+           #:find-any
+           #:split-at
+           #:split-string-at-char
+           #:week-day->string
+           #:month->string
+           #:month-string->number
+           #:add-months #:add-days
+           #:read-whole-stream
+           #:read-file #:write-file #:read-lines
+           #:read-from-file #:write-to-file
+           #:string-concat
+           #:gcase
+           #:string-truncate
+           #:promise #:force #:forced-p #:lazy #:deflazy #:lazy-metaclass #:self #:reset-lazy-slots
+           #:copy-stream #:copy-file
+           #:symlink-file
+           #:keywordify
+           #:until
+           #:year #:month #:day #:hour #:minute #:week-day #:week #:day-of-the-year
+           #:beginning-of-week #:end-of-week
+           #:next-week-day #:next-monday #:full-weeks-in-span
+           #:beginning-of-first-week #:end-of-last-week
+           #:beginning-of-month #:end-of-month
+           #:locate-system-program
+           #:*tmp-file-defaults*
+           #:temp-file-name
+           #:open-temp-file
+           #:with-temp-file
+           #:file-size
+           #:getenv
+           #:with-system-environment
+           #:time-string #:iso-time-string #:parse-iso-time-string
+           #:soundex
+           #:string-soundex=
+           #:lru-cache
+           #:getcache #:cached
+           #:print-time-span
+           #:double-linked-list #:limited-list #:sorted-list
+           #:insert #:size
+           #:heap #:heap-add #:heap-pop #:heap-empty-p
+           #:double-linked-element #:make-double-linked-element #:double-linked-element-p
+           #:dle-previous #:dle-next #:dle-value
+           #:cons-dle #:dle-remove #:dle-map #:do-dle :do-dle*
+           #:sl-map #:do-dll #:do-dll*
+           #:dll-find #:dll-find-cursor
+           #:push-first #:push-last #:dll-remove
+           #:pop-first #:pop-last
+           #:leap-year-p #:last-day-of-month
+           #:getuid #:setuid #:with-euid
+           #:get-logname #:get-user-name #:get-user-home #:find-uid
+           #:super-user-p
+           #:pathname-as-directory #:pathname-as-file
+           #:alist->plist #:plist->alist
+           #:byte-vector->string
+           #:string->byte-vector
+           #:outdated-p
+           #:with-hidden-temp-file
+           #:let-places #:let-slots
+           #:*decimal-point*
+           #:*thousands-comma*
+           #:format-amount #:parse-amount
+           #:with-package
+           #:make-directory #:ensure-directory
+           #:make-temp-directory
+           #:with-temp-directory
+           #:delete-directory
+           #:delete-directory-tree
+           #:do-directory-tree
+           #:traverse-directory-tree
+           #:empty-directory-p
+           #:remove-empty-directories
+           #:map-directory-tree
+           #:find-files
+           #:directory-p
+           #:regular-file-p
+           #:file-readable-p
+           #:file-writable-p
+           #:file-executable-p
+           #:current-directory
+           #:ensure-home-translations
+           #:list-directory
+           #:string-escape
+           #:string-substitute
+           #:bytes-simple-string
+           #:make-lock-files
+           #:with-lock-files
+           #:getpid
+           #:on-error
+           #:floor-to
+           #:round-to
+           #:ceiling-to
+           #:insert-in-order
+           #:forget-documentation
+           #:load-compiled
+           #:swap
+           #:queue #:make-queue #:queue-append #:queue-pop #:queue-empty-p
+           #:unix-stat #:unix-file-stat
+           #:stat-device
+           #:stat-inode
+           #:stat-links
+           #:stat-atime
+           #:stat-mtime
+           #:stat-ctime
+           #:stat-birthtime
+           #:stat-size
+           #:stat-blksize
+           #:stat-blocks
+           #:stat-uid
+           #:stat-gid
+           #:stat-mode
+           #:save-file-excursion
+           #:stat-modification-time
+           #:stat-creation-time
+           #:file-modification-time
+           #:file-creation-time
+           #:show
+           #:memoize-function
+           #:memoized
+           #:defun-memoized
+           #:parse-native-namestring
+           #:native-file-namestring
+           #:native-namestring
+           #:native-pathname
+           #:read-symbolic-link
+           #:symbolic-link-p
+           #:broken-link-p
+           #:circular-list
+           #:last-member
+           #:glob->regex
+           #:universal->unix-time #:unix->universal-time
+           #:get-unix-time
+           #:move-file
 
-	   ;; sysproc.lisp
-	   #:*run-verbose*
-	   #:run-pipe
-	   #:run-program
-	   #:run-shell-command
-	   #:run-async-shell-command
-	   #:exit-code
-	   #:with-open-pipe
-	   #:*bourne-shell*
-	   #:sysproc-kill
-	   #:sysproc-input
-	   #:sysproc-output
-	   #:sysproc-alive-p
-	   #:sysproc-pid
-	   #:sysproc-p
-	   #:sysproc-wait
-	   #:sysproc-exit-code
-	   #:sysproc-set-signal-callback
+           ;; sysproc.lisp
+           #:*run-verbose*
+           #:run-pipe
+           #:run-program
+           #:run-shell-command
+           #:run-async-shell-command
+           #:exit-code
+           #:with-open-pipe
+           #:*bourne-shell*
+           #:sysproc-kill
+           #:sysproc-input
+           #:sysproc-output
+           #:sysproc-alive-p
+           #:sysproc-pid
+           #:sysproc-p
+           #:sysproc-wait
+           #:sysproc-exit-code
+           #:sysproc-set-signal-callback
 
-	   ;; MP
-	   #:make-process
-	   #:destroy-process
-	   #:current-process
-	   #:all-processes
-	   #:processp
-	   #:process-name
-	   #:process-state
-	   #:process-whostate
-	   #:process-wait
-	   #:process-wait-with-timeout
-	   #:process-yield
-	   #:process-interrupt
-	   #:disable-process
-	   #:enable-process
-	   #:restart-process
-	   #:without-scheduling
-	   #:atomic-incf
-	   #:atomic-decf
-	   #:process-property-list
-	   #:process-alive-p
-	   #:process-join
-	   ;;
-	   #:make-lock
-	   #:with-lock-held
-	   #:make-recursive-lock
-	   #:with-recursive-lock-held
-	   ;;
-	   #:make-condition-variable
-	   #:condition-wait
-	   #:condition-notify
-	   #:process-property-list
-	   #:process-execute
-	   ;; mop.lisp
-	   #:printable-object-mixin
-	   ))
+           ;; MP
+           #:make-process
+           #:destroy-process
+           #:current-process
+           #:all-processes
+           #:processp
+           #:process-name
+           #:process-state
+           #:process-whostate
+           #:process-wait
+           #:process-wait-with-timeout
+           #:process-yield
+           #:process-interrupt
+           #:disable-process
+           #:enable-process
+           #:restart-process
+           #:without-scheduling
+           #:atomic-incf
+           #:atomic-decf
+           #:process-property-list
+           #:process-alive-p
+           #:process-join
+           ;;
+           #:make-lock
+           #:with-lock-held
+           #:make-recursive-lock
+           #:with-recursive-lock-held
+           ;;
+           #:make-condition-variable
+           #:condition-wait
+           #:condition-notify
+           #:process-property-list
+           #:process-execute
+           ;; mop.lisp
+           #:printable-object-mixin
+           ))
diff --git a/third_party/lisp/sclf/sclf.asd b/third_party/lisp/sclf/sclf.asd
index dfb56a8ded0e..a9754b756900 100644
--- a/third_party/lisp/sclf/sclf.asd
+++ b/third_party/lisp/sclf/sclf.asd
@@ -49,10 +49,10 @@ uses, too small to fit anywhere else."
      (:file "directory" :depends-on ("package" "sclf" "time"))
      (:file "serial" :depends-on ("package" "sclf"))
      (:module "mp"
-	      :depends-on ("package" "sclf")
-	      :components
-	      ((:doc-file "README")
-	       (:file #.(first
-			 (list #+cmu "cmu"
-			       #+sbcl "sbcl"
-			       "unknown")))))))
+              :depends-on ("package" "sclf")
+              :components
+              ((:doc-file "README")
+               (:file #.(first
+                         (list #+cmu "cmu"
+                               #+sbcl "sbcl"
+                               "unknown")))))))
diff --git a/third_party/lisp/sclf/sclf.lisp b/third_party/lisp/sclf/sclf.lisp
index 0d587da8eb69..dfbc2078c829 100644
--- a/third_party/lisp/sclf/sclf.lisp
+++ b/third_party/lisp/sclf/sclf.lisp
@@ -63,22 +63,22 @@
 (defmacro be (&rest bindings-and-body)
   "Less-parenthetic let."
   (let ((bindings
-	 (loop
-	    while (and (symbolp (car bindings-and-body))
-		       (cdr bindings-and-body))
-	    collect (list (pop bindings-and-body)
-			  (pop bindings-and-body)))))
+         (loop
+            while (and (symbolp (car bindings-and-body))
+                       (cdr bindings-and-body))
+            collect (list (pop bindings-and-body)
+                          (pop bindings-and-body)))))
     `(let ,bindings
        ,@bindings-and-body)))
 
 (defmacro be* (&rest bindings-and-body)
   "Less-parenthetic let*."
   (let ((bindings
-	 (loop
-	    while (and (symbolp (car bindings-and-body))
-		       (cdr bindings-and-body))
-	    collect (list (pop bindings-and-body)
-			  (pop bindings-and-body)))))
+         (loop
+            while (and (symbolp (car bindings-and-body))
+                       (cdr bindings-and-body))
+            collect (list (pop bindings-and-body)
+                          (pop bindings-and-body)))))
     `(let* ,bindings
        ,@bindings-and-body)))
 
@@ -93,7 +93,7 @@ useless.  This macro works around that problem."
   "Gensym all SYMBOLS and make them available in BODY.
 See also LET-GENSYMS."
   `(let ,(mapcar #'(lambda (s)
-		     (list s '(gensym))) symbols)
+                     (list s '(gensym))) symbols)
      ,@body))
 
 (defun s+ (&rest strings)
@@ -103,14 +103,14 @@ See also LET-GENSYMS."
 (defun string-starts-with (prefix string &optional (compare #'string=))
   (be prefix-length (length prefix)
     (and (>= (length string) prefix-length)
-	 (funcall compare prefix string :end2 prefix-length))))
+         (funcall compare prefix string :end2 prefix-length))))
 
 (defun string-ends-with (postfix string &optional (compare #'string=))
   "Return true if STRING's last characters are the same as POSTFIX."
   (be postfix-length (length postfix)
       string-length (length string)
     (and (>= string-length postfix-length)
-	 (funcall compare postfix string :start2 (- string-length postfix-length)))))
+         (funcall compare postfix string :start2 (- string-length postfix-length)))))
 
 (defun string-substitute (from to sequence &key (start 0) end (test #'eql))
   "Replace in SEQUENCE occurrences of FROM with TO.  FROM and TO don't
@@ -119,13 +119,13 @@ need to be the same length."
     (with-output-to-string (out)
       (write-string sequence out :start 0 :end start)
       (loop
-	 for position = (search from sequence :start2 start :end2 end :test test)
-	 while position
-	 do
-	   (write-string sequence out :start start :end position)
-	   (write-string to out)
-	   (setf start (+ position from-length))
-	 finally (write-string (subseq sequence start) out)))))
+         for position = (search from sequence :start2 start :end2 end :test test)
+         while position
+         do
+           (write-string sequence out :start start :end position)
+           (write-string to out)
+           (setf start (+ position from-length))
+         finally (write-string (subseq sequence start) out)))))
 
 (defun string-escape (string character &key (escape-character #\\) (escape-escape t))
   "Prepend all occurences of CHARACTER in STRING with a
@@ -134,8 +134,8 @@ ESCAPE-CHARACTER."
     (loop
        for c across string
        when (or (char= c character)
-		(and escape-escape
-		     (char= c escape-character)))
+                (and escape-escape
+                     (char= c escape-character)))
        do (write-char escape-character stream)
        do (write-char c stream))))
 
@@ -144,8 +144,8 @@ ESCAPE-CHARACTER."
 (defmacro aif (test then &optional else)
   `(be it ,test
      (if it
-	 ,then
-	 ,else)))
+         ,then
+         ,else)))
 
 (defmacro awhen (test &body then)
   `(be it ,test
@@ -155,13 +155,13 @@ ESCAPE-CHARACTER."
 (defmacro acond (&body forms)
   (when forms
     `(aif ,(caar forms)
-	  (progn ,@(cdar forms))
-	  (acond ,@(cdr forms)))))
+          (progn ,@(cdar forms))
+          (acond ,@(cdr forms)))))
 
 (defmacro aand (&rest args)
   (cond ((null args) t)
-	((null (cdr args)) (car args))
-	(t `(aif ,(car args) (aand ,@(cdr args))))))
+        ((null (cdr args)) (car args))
+        (t `(aif ,(car args) (aand ,@(cdr args))))))
 
 (defmacro acase (condition &body forms)
   `(be it ,condition
@@ -190,20 +190,20 @@ ESCAPE-CHARACTER."
   "Return SEQUENCE if it's not empty, otherwise NIL.
 NIL is indeed empty."
   (when (or (listp sequence)
-	    (not (zerop (length sequence))))
+            (not (zerop (length sequence))))
       sequence))
 
 (defun position-any (bag sequence &rest position-args)
   "Find any element of bag in sequence and return its position.
 Accept any argument accepted by the POSITION function."
   (apply #'position-if #'(lambda (element)
-			   (find element bag)) sequence position-args))
+                           (find element bag)) sequence position-args))
 
 (defun find-any (bag sequence &rest find-args)
   "Find any element of bag in sequence.  Accept any argument
 accepted by the FIND function."
   (apply #'find-if #'(lambda (element)
-			   (find element bag)) sequence find-args))
+                           (find element bag)) sequence find-args))
 
 (defun split-at (bag sequence &key (start 0) key)
   "Split SEQUENCE at occurence of any element from BAG.
@@ -211,15 +211,15 @@ Contiguous occurences of elements from BAG are considered atomic;
 so no empty sequence is returned."
   (be len (length sequence)
     (labels ((split-from (start)
-	       (unless (>= start len)
-		 (be sep (position-any bag sequence :start start :key key)
-		   (cond ((not sep)
-			  (list (subseq sequence start)))
-			 ((> sep start)
-			  (cons (subseq sequence start sep)
-				(split-from (1+ sep))))
-			 (t
-			  (split-from (1+ start))))))))
+               (unless (>= start len)
+                 (be sep (position-any bag sequence :start start :key key)
+                   (cond ((not sep)
+                          (list (subseq sequence start)))
+                         ((> sep start)
+                          (cons (subseq sequence start sep)
+                                (split-from (1+ sep))))
+                         (t
+                          (split-from (1+ start))))))))
       (split-from start))))
 
 (defun split-string-at-char (string separator &key escape skip-empty)
@@ -229,12 +229,12 @@ not nil then split at SEPARATOR only if it's not preceded by ESCAPE."
   (declare (type string string) (type character separator))
   (labels ((next-separator (beg)
              (be pos (position separator string :start beg)
-	       (if (and escape
-			pos
-			(plusp pos)
-			(char= escape (char string (1- pos))))
-		   (next-separator (1+ pos))
-		   pos)))
+               (if (and escape
+                        pos
+                        (plusp pos)
+                        (char= escape (char string (1- pos))))
+                   (next-separator (1+ pos))
+                   pos)))
            (parse (beg)
              (cond ((< beg (length string))
                     (let* ((end (next-separator beg))
@@ -244,11 +244,11 @@ not nil then split at SEPARATOR only if it's not preceded by ESCAPE."
                             ((not end)
                              (list substring))
                             (t
-			     (cons substring (parse (1+ end)))))))
+                             (cons substring (parse (1+ end)))))))
                    (skip-empty
-		    '())
+                    '())
                    (t
-		    (list "")))))
+                    (list "")))))
     (parse 0)))
 
 (defun copy-stream (in out)
@@ -262,15 +262,15 @@ not nil then split at SEPARATOR only if it's not preceded by ESCAPE."
   (unless (pathnamep pathname)
     (setf pathname (pathname pathname)))
   (cond ((pathname-name pathname)
-	 pathname)
-	((stringp (car (last (pathname-directory pathname))))
-	 (be name (parse-native-namestring (car (last (pathname-directory pathname))))
-	   (make-pathname :directory (butlast (pathname-directory pathname))
-			  :name (pathname-name name)
-			  :type (pathname-type name)
-			  :defaults pathname)))
-	;; it can't be done?
-	(t pathname)))
+         pathname)
+        ((stringp (car (last (pathname-directory pathname))))
+         (be name (parse-native-namestring (car (last (pathname-directory pathname))))
+           (make-pathname :directory (butlast (pathname-directory pathname))
+                          :name (pathname-name name)
+                          :type (pathname-type name)
+                          :defaults pathname)))
+        ;; it can't be done?
+        (t pathname)))
 
 (defun copy-file (file copy-file &key (if-exists :error))
   (with-open-file (in file)
@@ -279,7 +279,7 @@ not nil then split at SEPARATOR only if it's not preceded by ESCAPE."
 
 (defun symlink-file (src dst &key (if-exists :error))
   (when (and (eq :supersede if-exists)
-	     (probe-file dst))
+             (probe-file dst))
     (delete-file dst))
   #+sbcl (sb-posix:symlink src dst)
   #+cmu(unix:unix-symlink (native-namestring src) (native-namestring dst))
@@ -302,8 +302,8 @@ signalling an error."
      for line = (read-line stream nil)
      for i from 0
      while (and line
-		(or (not n)
-		    (< i n)))
+                (or (not n)
+                    (< i n)))
      collect line))
 
 (defun read-file (pathname &key (element-type 'character) (if-does-not-exist :error) default)
@@ -311,24 +311,24 @@ signalling an error."
 can be a string, a vector of bytes, or whatever you specify as
 ELEMENT-TYPE."
   (with-open-file (in pathname
-		      :element-type element-type
-		      :if-does-not-exist (unless (eq :value if-does-not-exist)
-					   :error))
+                      :element-type element-type
+                      :if-does-not-exist (unless (eq :value if-does-not-exist)
+                                           :error))
     (if in
-	(be seq (make-array (file-length in) :element-type element-type)
-	  (read-sequence seq in)
-	  seq)
-	default)))
+        (be seq (make-array (file-length in) :element-type element-type)
+          (read-sequence seq in)
+          seq)
+        default)))
 
 (defun write-file (pathname contents &key (if-exists :error))
   "Read the whole content of file and return it as a sequence which
 can be a string, a vector of bytes, or whatever you specify as
 ELEMENT-TYPE."
   (with-open-file (out pathname
-		       :element-type (if (stringp contents)
-					 'character
-					 (array-element-type contents))
-		       :if-exists if-exists)
+                       :element-type (if (stringp contents)
+                                         'character
+                                         (array-element-type contents))
+                       :if-exists if-exists)
     (write-sequence contents out)))
 
 (defun read-from-file (pathname &key (on-error :error) default)
@@ -343,9 +343,9 @@ DEFAULT is returned."
        (read in)))
     (:value
      (handler-case (with-open-file (in pathname)
-		     (read in))
+                     (read in))
        (t ()
-	 default)))))
+         default)))))
 
 (defun write-to-file (object pathname &key (if-exists :error) pretty)
   "Similar to WRITE-TO-STRING but for files.  Write OBJECT to a file
@@ -357,10 +357,10 @@ with pathname PATHNAME."
   "Concatenate the strings in LIST interposing SEPARATOR (default
 nothing) between them."
   (reduce #'(lambda (&rest args)
-	      (if args
-		  (s+ (car args) separator (cadr args))
-		  ""))
-	  list))
+              (if args
+                  (s+ (car args) separator (cadr args))
+                  ""))
+          list))
 
 ;; to indent it properly: (put 'gcase 'lisp-indent-function 1)
 (defmacro gcase ((value &optional (test 'equalp)) &rest cases)
@@ -369,18 +369,18 @@ but use TEST as the comparison function, which defaults to EQUALP."
   (with-gensyms (val)
     `(be ,val ,value
        ,(cons 'cond
-	      (mapcar #'(lambda (case-desc)
-			  (destructuring-bind (vals &rest forms) case-desc
-			    `(,(cond ((consp vals)
-				      (cons 'or (mapcar #'(lambda (v)
-							    (list test val v))
-							vals)))
-				     ((or (eq vals 'otherwise)
-					  (eq vals t))
-				      t)
-				     (t (list test val vals)))
-			       ,@forms)))
-		      cases)))))
+              (mapcar #'(lambda (case-desc)
+                          (destructuring-bind (vals &rest forms) case-desc
+                            `(,(cond ((consp vals)
+                                      (cons 'or (mapcar #'(lambda (v)
+                                                            (list test val v))
+                                                        vals)))
+                                     ((or (eq vals 'otherwise)
+                                          (eq vals t))
+                                      t)
+                                     (t (list test val vals)))
+                               ,@forms)))
+                      cases)))))
 
 (defun string-truncate (string max-length)
   "If STRING is longer than MAX-LENGTH, return a shorter version.
@@ -393,10 +393,10 @@ Otherwise return the same string unchanged."
 (defmacro until (test &body body)
   (with-gensyms (result)
     `(loop
-	for ,result = ,test
-	until ,result
-	do (progn ,@body)
-	finally (return ,result))))
+        for ,result = ,test
+        until ,result
+        do (progn ,@body)
+        finally (return ,result))))
 
 (defun keywordify (string)
   (intern (string-upcase string) :keyword))
@@ -419,7 +419,7 @@ to make sure that the returned pathname doesn't identify an
 already existing file.  If missing DEFAULT defaults to
 *TMP-FILE-DEFAULTS*."
   (make-pathname :defaults default
-		 :name (format nil "~36R" (random #.(expt 36 10)))))
+                 :name (format nil "~36R" (random #.(expt 36 10)))))
 
 (defun open-temp-file (&optional default-pathname &rest open-args)
   "Open a new temporary file and return a stream to it.  This function
@@ -435,14 +435,14 @@ file, otherwise *TMP-FILE-DEFAULTS* is used."
   ;; purpose of this function, otherwise make it default to :OUTPUT
   (aif (getf open-args :direction)
        (unless (member it '(:output :io))
-	 (error "Can't create temporary file with open direction ~A." it))
+         (error "Can't create temporary file with open direction ~A." it))
        (setf open-args (append '(:direction :output)
-			       open-args)))
+                               open-args)))
   (do* ((name #1=(temp-file-name default-pathname) #1#)
-	(stream #2=(apply #'open  name
-			  :if-exists nil
-			  :if-does-not-exist :create
-			  open-args) #2#))
+        (stream #2=(apply #'open  name
+                          :if-exists nil
+                          :if-does-not-exist :create
+                          open-args) #2#))
        (stream stream)))
 
 (defmacro with-temp-file ((stream &rest open-temp-args) &body body)
@@ -451,11 +451,11 @@ a STREAM open on a unique temporary file name.  OPEN-TEMP-ARGS are
 passed verbatim to OPEN-TEMP-FILE."
   `(be ,stream (open-temp-file ,@open-temp-args)
      (unwind-protect
-	  (progn ,@body)
+          (progn ,@body)
        (close ,stream)
        ;; body may decide to rename the file so we must ignore the errors
        (ignore-errors
-	 (delete-file (pathname ,stream))))))
+         (delete-file (pathname ,stream))))))
 
 (defmacro with-hidden-temp-file ((stream &rest open-args) &body body)
   "Just like WITH-TEMP-FILE but unlink (delete) the temporary file
@@ -468,17 +468,17 @@ may likely decide to crash, take all your data with it and, in the
 meanwhile, report you to the NSA as terrorist."
   `(be ,stream (open-temp-file ,@open-args)
      (unwind-protect
-	  (progn (delete-file (pathname ,stream))
-		 ,@body)
+          (progn (delete-file (pathname ,stream))
+                 ,@body)
        (close ,stream))))
 
 (defun insert-in-order (item seq &key (test #'<) key)
   "Destructively insert ITEM in LIST in order by TEST.  Return
 the new list.  This is a simple wrapper around MERGE."
   (merge (if seq
-	     (type-of seq)
-	     'list)
-	 (list item) seq test :key key))
+             (type-of seq)
+             'list)
+         (list item) seq test :key key))
 
 (defmacro f++ (x &optional (delta 1))
   "Same as INCF but hopefully optimised for fixnums."
@@ -500,46 +500,46 @@ Examples:
    (soundex \"Ladd\") => \"L300\""
   (declare (type string word))
   (flet ((translate-char (char)
-	   (awhen (position char "BFPVCGJKQSXZDTLMNR")
-	     (elt "111122222222334556" it))))
+           (awhen (position char "BFPVCGJKQSXZDTLMNR")
+             (elt "111122222222334556" it))))
     (let ((key (make-string key-length :initial-element #\0))
-	  (word-length (length word)))
+          (word-length (length word)))
       (setf (elt key 0) (elt word 0))
       (loop
-	 with previous-sound = (translate-char (char-upcase (elt word 0)))
-	 with j = 1
-	 for i from 1 by 1 below word-length
-	 for c = (char-upcase (elt word i))
-	 while (< j key-length)
-	 do (be sound (translate-char c)
-	      (cond ((not (eq sound previous-sound))
-		     (unless (member c '(#\H #\W))
-		       (setf previous-sound sound))
-		     (when sound
-		       (setf (elt key j) sound)
-		       (incf j))))))
+         with previous-sound = (translate-char (char-upcase (elt word 0)))
+         with j = 1
+         for i from 1 by 1 below word-length
+         for c = (char-upcase (elt word i))
+         while (< j key-length)
+         do (be sound (translate-char c)
+              (cond ((not (eq sound previous-sound))
+                     (unless (member c '(#\H #\W))
+                       (setf previous-sound sound))
+                     (when sound
+                       (setf (elt key j) sound)
+                       (incf j))))))
       key)))
 
 (defun string-soundex= (string1 string2)
   (let ((l1 (split-at +whitespace+ string1))
-	(l2 (split-at +whitespace+ string2)))
+        (l2 (split-at +whitespace+ string2)))
     (and (= (length l1) (length l2))
-	 (every #'string= (mapcar #'soundex l1) (mapcar #'soundex l2)))))
+         (every #'string= (mapcar #'soundex l1) (mapcar #'soundex l2)))))
 
 #+(OR)
 (defun soundex-test ()
   (let* ((words1 '("Euler" "Gauss" "Hilbert" "Knuth" "Lloyd" "Lukasiewicz" "Wachs"))
-	 (words2 '("Ellery" "Ghosh" "Heilbronn" "Kant" "Ladd" "Lissajous" "Waugh"))
-	 (results '("E460" "G200" "H416" "K530" "L300" "L222" "W200")))
+         (words2 '("Ellery" "Ghosh" "Heilbronn" "Kant" "Ladd" "Lissajous" "Waugh"))
+         (results '("E460" "G200" "H416" "K530" "L300" "L222" "W200")))
     (mapc #'(lambda (w1 w2 r)
-	      (let ((r1 (soundex w1))
-		    (r2 (soundex w2)))
-		(format t "~A = ~A, ~A = ~A => ~A~%" w1 r1 w2 r2
-			(if (and (string= r1 r2)
-				 (string= r r1))
-			    "OK"
-			    (format nil "ERROR (expected ~A)" r)))))
-	  words1 words2 results)
+              (let ((r1 (soundex w1))
+                    (r2 (soundex w2)))
+                (format t "~A = ~A, ~A = ~A => ~A~%" w1 r1 w2 r2
+                        (if (and (string= r1 r2)
+                                 (string= r r1))
+                            "OK"
+                            (format nil "ERROR (expected ~A)" r)))))
+          words1 words2 results)
     (values)))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -596,17 +596,17 @@ one (if any)."
 (defun dle-map (function dle-object)
   (when dle-object
     (make-double-linked-element :value (funcall function (dle-value dle-object))
-				:previous (dle-previous dle-object)
-				:next (dle-map function (dle-next dle-object)))))
+                                :previous (dle-previous dle-object)
+                                :next (dle-map function (dle-next dle-object)))))
 
 (defmacro do-dle ((var dle &optional (result nil)) &body body)
   "Iterate over a list of DOUBLE-LINKED-ELEMENTs and map body to
 each element's value.  Bind VAR to the value on each iteration."
   (be cursor (gensym)
     `(do ((,cursor ,dle (dle-next ,cursor)))
-	 ((not ,cursor) ,result)
+         ((not ,cursor) ,result)
        (be ,var (dle-value ,cursor)
-	 ,@body))))
+         ,@body))))
 
 (defmacro do-dle* ((var dle &optional (result nil)) &body body)
   "Same as DO-DLE but VAR is a symbol macro, so that BODY can
@@ -614,14 +614,14 @@ modify the element's value."
   (be cursor (gensym)
     `(symbol-macrolet ((,var (dle-value ,cursor)))
        (do ((,cursor ,dle (dle-next ,cursor)))
-	   ((not ,cursor) ,result)
-	 ,@body))))
+           ((not ,cursor) ,result)
+         ,@body))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defclass double-linked-list ()
   ((elements :type double-linked-element
-	     :documentation "The actual list of elements held by this object.")
+             :documentation "The actual list of elements held by this object.")
    (last-element :type double-linked-element))
   (:documentation
    "A double linked list where elements can be added or removed
@@ -632,13 +632,13 @@ from either end."))
   (call-next-method)
   (with-slots (last-element elements) object
     (setf last-element (make-double-linked-element)
-	  elements last-element)))
+          elements last-element)))
 
 (defmethod print-object ((object double-linked-list) stream)
   (print-unreadable-object (object stream :type t)
     (be elements '()
       (do-dle (e (slot-value object 'elements))
-	(push e elements))
+        (push e elements))
       (format stream "elements=~S" (nreverse elements)))))
 
 (defgeneric pop-first (double-linked-list)
@@ -672,8 +672,8 @@ from either end."))
   (with-slots (elements) list
     (when (dle-next elements)
       (prog1 (dle-value elements)
-	(setf (dle-previous (dle-next elements)) nil
-	      elements (dle-next elements))))))
+        (setf (dle-previous (dle-next elements)) nil
+              elements (dle-next elements))))))
 
 (defmethod push-first (value (list double-linked-list))
   (with-slots (elements) list
@@ -687,11 +687,11 @@ from either end."))
 
 (defmethod list-map (function (list double-linked-list))
   (labels ((map-dll (dle)
-	     (when (dle-next dle)
-	       (make-double-linked-element
-		:value (funcall function (dle-value dle))
-		:previous (dle-previous dle)
-		:next (map-dll (dle-next dle))))))
+             (when (dle-next dle)
+               (make-double-linked-element
+                :value (funcall function (dle-value dle))
+                :previous (dle-previous dle)
+                :next (map-dll (dle-next dle))))))
     (map-dll (slot-value list 'elements))))
 
 (defmethod dll-find-cursor (object (list double-linked-list) &key (test #'eql) (key #'identity))
@@ -699,7 +699,7 @@ from either end."))
       ((not (dle-next cursor)))
     (be value (dle-value cursor)
       (when (funcall test (funcall key value) object)
-	(return cursor)))))
+        (return cursor)))))
 
 (defmethod dll-find (object (list double-linked-list) &key (test #'eql) (key #'identity))
   (awhen (dll-find-cursor object list :test test :key key)
@@ -708,9 +708,9 @@ from either end."))
 (defmethod dll-remove ((cursor double-linked-element) (list double-linked-list))
   (with-slots (elements) list
     (if (dle-previous cursor)
-	(dle-remove cursor)
-	(setf (dle-previous (dle-next elements)) nil
-	      elements (dle-next elements))))
+        (dle-remove cursor)
+        (setf (dle-previous (dle-next elements)) nil
+              elements (dle-next elements))))
   list)
 
 (defmacro do-dll ((var list &optional (result nil)) &body body)
@@ -718,9 +718,9 @@ from either end."))
 value.  Bind VAR to the value on each iteration."
   (be cursor (gensym)
     `(do ((,cursor (slot-value ,list 'elements) (dle-next ,cursor)))
-	 ((not (dle-next ,cursor)) ,result)
+         ((not (dle-next ,cursor)) ,result)
        (be ,var (dle-value ,cursor)
-	 ,@body))))
+         ,@body))))
 
 (defmacro do-dll* ((var list &optional (result nil)) &body body)
   "Same as DO-DLL but VAR is a symbol macro, so that BODY can
@@ -728,21 +728,21 @@ modify the element's value."
   (be cursor (gensym)
     `(symbol-macrolet ((,var (dle-value ,cursor)))
        (do ((,cursor (slot-value ,list 'elements) (dle-next ,cursor)))
-	   ((not (dle-next ,cursor)) ,result)
-	 ,@body))))
+           ((not (dle-next ,cursor)) ,result)
+         ,@body))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defclass limited-list (double-linked-list)
   ((max-size :initform nil
-	     :initarg :size
-	     :reader max-size
-	     :type (or integer null)
-	     :documentation "Size limit to which the list is allowed to grow to.  NIL = no limit.")
+             :initarg :size
+             :reader max-size
+             :type (or integer null)
+             :documentation "Size limit to which the list is allowed to grow to.  NIL = no limit.")
    (size :initform 0
-	 :reader size
-	 :type integer
-	 :documentation "Current number of elements in the list."))
+         :reader size
+         :type integer
+         :documentation "Current number of elements in the list."))
   (:documentation
    "A double linked list where the maximum number of elements can
 be limited."))
@@ -750,9 +750,9 @@ be limited."))
 (defun dll-member-p (dle list)
   (with-slots (elements size) list
     (do ((e elements (dle-next e)))
-	((not e))
+        ((not e))
       (when (eq e dle)
-	(return t)))))
+        (return t)))))
 
 (defmethod dll-remove ((cursor double-linked-element) (list limited-list))
   (with-slots (size) list
@@ -780,9 +780,9 @@ full."
   (prog1 (call-next-method)
     (with-slots (max-size size last-element) list
       (if (or (not max-size)
-	      (< size max-size))
-	  (incf size)
-	  (dle-remove (dle-previous last-element))))))
+              (< size max-size))
+          (incf size)
+          (dle-remove (dle-previous last-element))))))
 
 (defmethod push-last (value (list limited-list))
   "Add at the end of the list and drop the first element if list
@@ -791,16 +791,16 @@ is full."
   (prog1 (call-next-method)
     (with-slots (max-size size elements) list
       (if (or (not max-size)
-	      (< size max-size))
-	(incf size)
-	(setf (dle-previous (dle-next elements)) nil
-	      elements (dle-next elements))))))
+              (< size max-size))
+        (incf size)
+        (setf (dle-previous (dle-next elements)) nil
+              elements (dle-next elements))))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defclass sorted-list (limited-list)
   ((test :type function
-	 :initarg :test))
+         :initarg :test))
   (:documentation
    "A double linked list where elements are inserted in a
 sorted order."))
@@ -816,25 +816,25 @@ Returns two values, the modified list and the cursor to the new
 element."
   (with-slots (max-size size elements test last-element) sl
     (do ((cursor elements (dle-next cursor)))
-	((or (not (dle-next cursor))
-	     (funcall test item (dle-value cursor)))
-	 (if (dle-previous cursor)
-	     (cons-dle item (dle-previous cursor) cursor)
-	     (setf elements (cons-dle item nil cursor)))
-	 (if (or (not max-size)
-		  (< size max-size))
-	     (incf size)
-	     (dle-remove (dle-previous last-element)))
-	 (values sl (dle-previous cursor))))))
+        ((or (not (dle-next cursor))
+             (funcall test item (dle-value cursor)))
+         (if (dle-previous cursor)
+             (cons-dle item (dle-previous cursor) cursor)
+             (setf elements (cons-dle item nil cursor)))
+         (if (or (not max-size)
+                  (< size max-size))
+             (incf size)
+             (dle-remove (dle-previous last-element)))
+         (values sl (dle-previous cursor))))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defclass heap ()
   ((less-than :type function
-	      :initarg :test
-	      :documentation "The heap invariant.")
+              :initarg :test
+              :documentation "The heap invariant.")
    (data :type array
-	 :documentation "The heap tree representation.")))
+         :documentation "The heap tree representation.")))
 
 (defmethod initialize-instance ((heap heap) &rest args)
   (declare (ignore args))
@@ -850,7 +850,7 @@ element."
        for current = pos then parent
        for parent = (truncate (1- current) 2)
        until (or (zerop current)
-		 (funcall less-than (aref data parent) (aref data current)))
+                 (funcall less-than (aref data parent) (aref data current)))
        do (rotatef (aref data current) (aref data parent)))))
 
 (defmethod heap-add ((heap heap) item)
@@ -879,13 +879,13 @@ element."
        for left-child = (+ 1 (* 2 current))
        for right-child = (+ 2 (* 2 current))
        for child = (cond ((>= left-child end)
-			  (return))
-			 ((>= right-child end)
-			  left-child)
-			 ((funcall less-than (aref data left-child) (aref data right-child))
-			  left-child)
-			 (t
-			  right-child))
+                          (return))
+                         ((>= right-child end)
+                          left-child)
+                         ((funcall less-than (aref data left-child) (aref data right-child))
+                          left-child)
+                         (t
+                          right-child))
        while (funcall less-than (aref data child) (aref data current))
        do (rotatef (aref data current) (aref data child)))))
 
@@ -901,7 +901,7 @@ element."
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defstruct (lru-cache-slot (:include double-linked-element)
-			   (:conc-name lruc-slot-))
+                           (:conc-name lruc-slot-))
   key)
 
 (defmethod print-object ((object lru-cache-slot) stream)
@@ -914,24 +914,24 @@ time.")
 
 (defclass lru-cache ()
   ((max-size :initform *default-cache-size*
-	     :initarg :size
-	     :reader max-size
-	     :type (or integer null)
-	     :documentation
-	     "Maximum number of elements that the cache can fit.")
+             :initarg :size
+             :reader max-size
+             :type (or integer null)
+             :documentation
+             "Maximum number of elements that the cache can fit.")
    (elements-list :type lru-cache-slot
-		  :documentation "The list of elements held by the cache.")
+                  :documentation "The list of elements held by the cache.")
    (elements-hash :type hash-table
-		  :documentation "The hash table of the elements held bye the cache.")
+                  :documentation "The hash table of the elements held bye the cache.")
    (last-element :type lru-cache-slot)
    (size :initform 0
-	 :reader size
-	 :type integer
-	 :documentation "Current number of elements in the cache.")
+         :reader size
+         :type integer
+         :documentation "Current number of elements in the cache.")
    (finalizer :initform nil
-	      :initarg :finalizer
-	      :documentation
-	      "Procedure to call when elements are dropped from cache."))
+              :initarg :finalizer
+              :documentation
+              "Procedure to call when elements are dropped from cache."))
   (:documentation
    "An objects cache that keeps the elements used more often and
 drops those that are used less often.  The usage is similar to an
@@ -945,10 +945,10 @@ is required."))
   (call-next-method)
   (with-slots (last-element elements-list elements-hash) object
     (setf last-element (make-lru-cache-slot)
-	  elements-list last-element
-	  elements-hash (if test
-			    (make-hash-table :test test)
-			    (make-hash-table)))))
+          elements-list last-element
+          elements-hash (if test
+                            (make-hash-table :test test)
+                            (make-hash-table)))))
 
 (defgeneric getcache (key cache)
   (:documentation
@@ -966,7 +966,7 @@ is required."))
   "Relocate slot to the front of the elements list in cache.
 This will stretch its lifespan in the cache."
   (declare (type lru-cache-slot slot)
-	   (type lru-cache cache))
+           (type lru-cache cache))
   (with-slots (elements-list) cache
     ;; unless it's already the first
     (unless (eq slot elements-list)
@@ -974,9 +974,9 @@ This will stretch its lifespan in the cache."
       (dle-remove slot)
       ;; ... and add it in front of the list
       (setf (lruc-slot-next slot) elements-list
-	    (lruc-slot-previous slot) nil
-	    (lruc-slot-previous elements-list) slot
-	    elements-list slot))))
+            (lruc-slot-previous slot) nil
+            (lruc-slot-previous elements-list) slot
+            elements-list slot))))
 
 (defun drop-last-cache-element (cache)
   "Drop the last element in the list of the cache object."
@@ -985,20 +985,20 @@ This will stretch its lifespan in the cache."
     (let ((second-last (lruc-slot-previous last-element)))
       (assert second-last)
       (when finalizer
-	(funcall finalizer (lruc-slot-value second-last)))
+        (funcall finalizer (lruc-slot-value second-last)))
       (dle-remove second-last)
       (remhash (lruc-slot-key second-last) elements-hash))))
 
 (defun add-to-cache (slot cache)
   (declare (type lru-cache-slot slot)
-	   (type lru-cache cache))
+           (type lru-cache cache))
   (move-in-front-of-cache-list slot cache)
   (with-slots (max-size size elements-hash) cache
     (setf (gethash (lruc-slot-key slot) elements-hash) slot)
     (if (and max-size
-	     (< size max-size))
-	(incf size)
-	(drop-last-cache-element cache))))
+             (< size max-size))
+        (incf size)
+        (drop-last-cache-element cache))))
 
 (defmethod getcache (key (cache lru-cache))
   (multiple-value-bind (slot found?) (gethash key (slot-value cache 'elements-hash))
@@ -1010,37 +1010,37 @@ This will stretch its lifespan in the cache."
   (with-slots (elements-hash elements-list) cache
     (multiple-value-bind (slot found?) (gethash key elements-hash)
       (if found?
-	  (progn
-	    (move-in-front-of-cache-list slot cache)
-	    (setf (lruc-slot-value slot) value))
-	  (add-to-cache (make-lru-cache-slot :key key :value value) cache))
+          (progn
+            (move-in-front-of-cache-list slot cache)
+            (setf (lruc-slot-value slot) value))
+          (add-to-cache (make-lru-cache-slot :key key :value value) cache))
       value)))
 
 (defmethod remcache (key (cache lru-cache))
   (with-slots (elements-hash size elements-list finalizer) cache
     (multiple-value-bind (slot found?) (gethash key elements-hash)
       (when found?
-	(remhash key elements-hash)
-	(when finalizer
-	  (funcall finalizer (lruc-slot-value slot)))
-	(when (eq slot elements-list)
-	  (setf elements-list (dle-next slot)))
-	(dle-remove slot)
-	(decf size)
-	t))))
+        (remhash key elements-hash)
+        (when finalizer
+          (funcall finalizer (lruc-slot-value slot)))
+        (when (eq slot elements-list)
+          (setf elements-list (dle-next slot)))
+        (dle-remove slot)
+        (decf size)
+        t))))
 
 (defmacro cached (cache key value)
   "If KEY is found in CACHE return the associated object.  Otherwise
 store VALUE for later re-use."
   (with-gensyms (object my-cache my-key my-value found?)
     `(let* ((,my-cache ,cache)
-	    (,my-key ,key))
+            (,my-key ,key))
        (multiple-value-bind (,object ,found?) (getcache ,my-key ,my-cache)
-	 (if ,found?
-	     ,object
-	     (let ((,my-value ,value))
-	       (setf (getcache ,my-key ,my-cache) ,my-value)
-	       ,my-value))))))
+         (if ,found?
+             ,object
+             (let ((,my-value ,value))
+               (setf (getcache ,my-key ,my-cache) ,my-value)
+               ,my-value))))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
@@ -1073,17 +1073,17 @@ store VALUE for later re-use."
 (defun find-uid (name)
   "Find the user id of NAME.  Return an integer."
   #+sbcl (awhen (sb-posix:getpwnam name)
-	   (sb-posix:passwd-uid it))
+           (sb-posix:passwd-uid it))
   #+cmu (awhen (unix:unix-getpwnam name)
-	  (unix:user-info-uid it))
+          (unix:user-info-uid it))
   #-(or cmu sbcl)
   (error "Unable to find a UID on this Lisp system."))
 
 #+clisp (ffi:def-call-out %getuid
-	    (:name "getuid")
-	  (:arguments)
-	  (:return-type ffi:int)
-	  (:library "libc.so"))
+            (:name "getuid")
+          (:arguments)
+          (:return-type ffi:int)
+          (:library "libc.so"))
 
 (defun getuid ()
   "Return the Unix user id.  This is an integer."
@@ -1104,7 +1104,7 @@ user id."
     `(be ,ruid (getuid)
        (seteuid ,uid)
        (unwind-protect (progn ,@forms)
-	 (seteuid ,ruid)))))
+         (seteuid ,ruid)))))
 
 (defun get-logname (&optional uid)
   "Return the login id of the user.  This is a string and it is not
@@ -1129,9 +1129,9 @@ file."
     (setf uid (find-uid uid)))
   (when uid
     (car (split-string-at-char #+cmu (unix:user-info-gecos (unix:unix-getpwuid uid))
-			       #+sbcl (sb-posix:passwd-gecos (sb-posix:getpwuid uid))
-			       #-(or cmu sbcl) (error "can't getpwuid() on this Lisp system.")
-			       #\,))))
+                               #+sbcl (sb-posix:passwd-gecos (sb-posix:getpwuid uid))
+                               #-(or cmu sbcl) (error "can't getpwuid() on this Lisp system.")
+                               #\,))))
 
 (defun get-user-home (&optional uid)
   (unless uid
@@ -1158,37 +1158,37 @@ value.  If PAIRS-P is true the alist elements will be pairs."
   (loop
      for (key val) on plist by #'cddr
      collect (if pairs-p
-		 (cons key val)
-		 (list key val))))
+                 (cons key val)
+                 (list key val))))
 
 (defun string->byte-vector (string &key start end)
   "Convert a string of characters into a vector of (unsigned-byte
 8) elements."
   (map '(vector (unsigned-byte 8)) #'char-code
        (if (or start end)
-	   (subseq string (or start 0) end)
-	   string)))
+           (subseq string (or start 0) end)
+           string)))
 
 (defun byte-vector->string (vector &key start end)
   "Convert a vector of (unsigned-byte 8) elements into a string
 of characters."
   (map 'string #'code-char
        (if (or start end)
-	   (subseq vector (or start 0) end)
-	   vector)))
+           (subseq vector (or start 0) end)
+           vector)))
 
 (defun outdated-p (file dependencies)
   "Check if FILE has been modified before any of its
 DEPENDENCIES."
   (be epoch (and (probe-file file)
-		 (file-write-date file))
+                 (file-write-date file))
     ;; if file is missing altogether, we consider it outdated
     (or (not epoch)
-	(loop
-	   for dep in dependencies
-	   thereis (aand (probe-file dep)
-			 (file-write-date dep)
-			 (> it epoch))))))
+        (loop
+           for dep in dependencies
+           thereis (aand (probe-file dep)
+                         (file-write-date dep)
+                         (> it epoch))))))
 
 (defmacro let-places (places-and-values &body body)
   "Execute BODY binding temporarily some places to new values and
@@ -1198,21 +1198,21 @@ instead of new variable names this macro binds values to existing
 places (variables)."
   (be tmp-variables (loop for x in places-and-values collect (gensym))
     `(let ,(mapcar #'(lambda (tmp-var place-and-value)
-		       (list tmp-var (car place-and-value)))
-		   tmp-variables places-and-values)
+                       (list tmp-var (car place-and-value)))
+                   tmp-variables places-and-values)
        (unwind-protect
-	    (progn
-	      ;; as some assignments could signal an error, we assign
-	      ;; within the unwind-protect block so that we can always
-	      ;; guarantee a consistent state on exit
-	      ,@(mapcar #'(lambda (place-and-value)
-			    `(setf ,(car place-and-value) ,(cadr place-and-value)))
-			places-and-values)
-	      ,@body)
-	 ,@(mapcar #'(lambda (tmp-var place-and-value)
-		       `(setf ,(car place-and-value) ,tmp-var))
-		   tmp-variables
-		   places-and-values)))))
+            (progn
+              ;; as some assignments could signal an error, we assign
+              ;; within the unwind-protect block so that we can always
+              ;; guarantee a consistent state on exit
+              ,@(mapcar #'(lambda (place-and-value)
+                            `(setf ,(car place-and-value) ,(cadr place-and-value)))
+                        places-and-values)
+              ,@body)
+         ,@(mapcar #'(lambda (tmp-var place-and-value)
+                       `(setf ,(car place-and-value) ,tmp-var))
+                   tmp-variables
+                   places-and-values)))))
 
 (defmacro let-slots (accessor/new-value-pairs object &body body)
   "Execute BODY with some OBJECT's slots temporary sets to new
@@ -1223,61 +1223,61 @@ their original value.  See LET-PLACES."
   (with-gensyms (obj)
     `(be ,obj ,object
        (let-places ,(mapcar #'(lambda (av)
-				`((,(car av) ,obj) ,(cadr av)))
-			    accessor/new-value-pairs)
-	 ,@body))))
+                                `((,(car av) ,obj) ,(cadr av)))
+                            accessor/new-value-pairs)
+         ,@body))))
 
 (defvar *decimal-point* #\.)
 (defvar *thousands-comma* #\,)
 
 (defun format-amount (number &key (decimals 2) (rounder #'round)
-		      (comma *thousands-comma*) (comma-stance 3)
-		      (decimal-point *decimal-point*))
+                      (comma *thousands-comma*) (comma-stance 3)
+                      (decimal-point *decimal-point*))
   "Return a string formatted as fixed decimal point number of DECIMALS
 adding commas every COMMA-STANCE places before the decimal point."
   (declare (type number number)
-	   (type fixnum decimals comma-stance)
-	   (type function rounder)
-	   (type character comma decimal-point)
-	   (optimize (speed 3) (safety 0) (debug 0)))
+           (type fixnum decimals comma-stance)
+           (type function rounder)
+           (type character comma decimal-point)
+           (optimize (speed 3) (safety 0) (debug 0)))
   (let* ((int (funcall rounder (* number (expt 10 decimals))))
-	 (negative (< int 0)))
+         (negative (< int 0)))
     (declare (integer int))
     (when negative
       (setf int (- int)))
     (let* ((digits (max (1+ decimals)
-			(1+ (if (zerop int)
-				0
-				(truncate (log int 10))))))
-	   (string-length (+ digits
-			     ;; the minus sign
-			     (if negative 1 0)
-			     ;; the decimal point
-			     (if (zerop decimals) 0 1)
-			     ;; the thousands commas
-			     (1- (ceiling (- digits decimals) comma-stance))))
-	   (string (make-string string-length))
-	   (pos (1- string-length)))
+                        (1+ (if (zerop int)
+                                0
+                                (truncate (log int 10))))))
+           (string-length (+ digits
+                             ;; the minus sign
+                             (if negative 1 0)
+                             ;; the decimal point
+                             (if (zerop decimals) 0 1)
+                             ;; the thousands commas
+                             (1- (ceiling (- digits decimals) comma-stance))))
+           (string (make-string string-length))
+           (pos (1- string-length)))
       (declare (type fixnum pos digits))
       (labels ((add-char (char)
-		 (setf (schar string pos) char)
-		 (decf pos))
-	       (add-digit ()
-		 (add-char (digit-char (mod int 10)))
-		 (setf int (truncate int 10))))
-	(unless (zerop decimals)
-	  (loop
-	     for i fixnum from 0 below decimals
-	     do (add-digit))
-	  (add-char decimal-point))
-	(loop
-	   for i fixnum from 1
-	   do (add-digit)
-	   while (>= pos (if negative 1 0))
-	   when (zerop (mod i comma-stance))
-	   do (add-char comma))
-	(when negative
-	  (add-char #\-)))
+                 (setf (schar string pos) char)
+                 (decf pos))
+               (add-digit ()
+                 (add-char (digit-char (mod int 10)))
+                 (setf int (truncate int 10))))
+        (unless (zerop decimals)
+          (loop
+             for i fixnum from 0 below decimals
+             do (add-digit))
+          (add-char decimal-point))
+        (loop
+           for i fixnum from 1
+           do (add-digit)
+           while (>= pos (if negative 1 0))
+           when (zerop (mod i comma-stance))
+           do (add-char comma))
+        (when negative
+          (add-char #\-)))
       string)))
 
 (defun parse-amount (string &key (start 0) end)
@@ -1288,28 +1288,28 @@ trailing spaces must be removed from the string in advance."
      with amount = 0
      with decimals = nil
      with negative = (when (and (not (zerop (length string)))
-				(char= #\- (char string 0)))
-		       (incf start)
-		       t)
+                                (char= #\- (char string 0)))
+                       (incf start)
+                       t)
      for i from start below (or end (length string))
      for c = (char string i)
      do (cond ((char= c *decimal-point*)
-	       (if decimals
-		   (return nil)
-		   (setf decimals 0)))
-	      ((char= c *thousands-comma*))
-	      (t
-	       (be d (digit-char-p c)
-		 (cond ((not d)
-			(return nil))
-		       (decimals
-			(incf decimals)
-			(incf amount (/ d (expt 10 decimals))))
-		       (t
-			(setf amount (+ d (* amount 10))))))))
+               (if decimals
+                   (return nil)
+                   (setf decimals 0)))
+              ((char= c *thousands-comma*))
+              (t
+               (be d (digit-char-p c)
+                 (cond ((not d)
+                        (return nil))
+                       (decimals
+                        (incf decimals)
+                        (incf amount (/ d (expt 10 decimals))))
+                       (t
+                        (setf amount (+ d (* amount 10))))))))
      finally (return (if negative
-			 (- amount)
-			 amount))))
+                         (- amount)
+                         amount))))
 
 (defmacro with-package (name &body body)
   `(let ((*package* (find-package ,name)))
@@ -1320,22 +1320,22 @@ trailing spaces must be removed from the string in advance."
 of a byte that is most apporpriate for the magnitude of N.  A
 kilobyte is 1024 not 1000 bytes, everything follows."
   (let* ((kilo 1024)
-	 (mega (* kilo kilo))
-	 (giga (* kilo mega))
-	 (tera (* mega mega))
-	 (peta (* kilo tera)))
+         (mega (* kilo kilo))
+         (giga (* kilo mega))
+         (tera (* mega mega))
+         (peta (* kilo tera)))
     (apply #'format nil "~,1F~A"
-	   (cond ((> n (* 2 peta))
-		  (list (/ n peta) (if imply-bytes "P" "PB")))
-		 ((> n (* 2 tera))
-		  (list (/ n tera) (if imply-bytes "T" "TB")))
-		 ((> n (* 2 giga))
-		  (list (/ n giga) (if imply-bytes "G" "GB")))
-		 ((> n (* 2 mega))
-		  (list (/ n mega) (if imply-bytes "M" "MB")))
-		 ((> n (* 2 kilo))
-		  (list (/ n kilo) (if imply-bytes "K" "KB")))
-		 (t (list n (if imply-bytes "" " bytes")))))))
+           (cond ((> n (* 2 peta))
+                  (list (/ n peta) (if imply-bytes "P" "PB")))
+                 ((> n (* 2 tera))
+                  (list (/ n tera) (if imply-bytes "T" "TB")))
+                 ((> n (* 2 giga))
+                  (list (/ n giga) (if imply-bytes "G" "GB")))
+                 ((> n (* 2 mega))
+                  (list (/ n mega) (if imply-bytes "M" "MB")))
+                 ((> n (* 2 kilo))
+                  (list (/ n kilo) (if imply-bytes "K" "KB")))
+                 (t (list n (if imply-bytes "" " bytes")))))))
 
 ;; WARNING: This function may or may not work on your Lisp system.  It
 ;; all depends on how the OPEN function has been implemented regarding
@@ -1368,31 +1368,31 @@ prevent the inadvertent immediate removal of any newly created
 lock file by another program."
   (be locked '()
     (flet ((lock (file)
-	     (when (and expiration
-			(> (get-universal-time)
-			   (+ (file-write-date file) expiration)))
-	       (delete-file file)
-	       (when suspend
-		 (sleep suspend)))
-	     (do ((i 0 (1+ i))
-		  (done nil))
-		 (done)
-	       (unless (or (not retries)
-			   (< i retries))
-		 (error "Can't create lock file ~S: tried ~A time~:P." file retries))
-	       (with-open-file (out file :direction :output :if-exists nil)
-		 (cond (out
-			(format out "Lock file created on ~A~%" (time-string (get-universal-time)))
-			(setf done t))
-		       (sleep-time
-			(sleep sleep-time)))))))
+             (when (and expiration
+                        (> (get-universal-time)
+                           (+ (file-write-date file) expiration)))
+               (delete-file file)
+               (when suspend
+                 (sleep suspend)))
+             (do ((i 0 (1+ i))
+                  (done nil))
+                 (done)
+               (unless (or (not retries)
+                           (< i retries))
+                 (error "Can't create lock file ~S: tried ~A time~:P." file retries))
+               (with-open-file (out file :direction :output :if-exists nil)
+                 (cond (out
+                        (format out "Lock file created on ~A~%" (time-string (get-universal-time)))
+                        (setf done t))
+                       (sleep-time
+                        (sleep sleep-time)))))))
       (unwind-protect
-	   (progn
-	     (dolist (file pathnames)
-	       (lock file)
-	       (push file locked))
-	     (setf locked '()))
-	(mapc #'delete-file locked)))))
+           (progn
+             (dolist (file pathnames)
+               (lock file)
+               (push file locked))
+             (setf locked '()))
+        (mapc #'delete-file locked)))))
 
 (defmacro with-lock-files ((lock-files &rest lock-args) &body body)
   "Execute BODY after creating LOCK-FILES.  Remove the lock files
@@ -1401,7 +1401,7 @@ on exit.  LOCK-ARGS are passed to MAKE-LOCK-FILES."
     `(be ,files (list ,@lock-files)
        (make-lock-files ,files ,@lock-args)
        (unwind-protect (progn ,@body)
-	 (mapc #'delete-file ,files)))))
+         (mapc #'delete-file ,files)))))
 
 (defun getpid ()
   #+cmu (unix:unix-getpid)
@@ -1416,11 +1416,11 @@ This does _not_ stop the error from propagating."
   (be done-p (gensym)
     `(be ,done-p nil
        (unwind-protect
-	    (prog1
-		,form
-	      (setf ,done-p t))
-	 (unless ,done-p
-	   ,@error-forms)))))
+            (prog1
+                ,form
+              (setf ,done-p t))
+         (unless ,done-p
+           ,@error-forms)))))
 
 (defun floor-to (x aim)
   "Round X down to the nearest multiple of AIM."
@@ -1446,11 +1446,11 @@ This does _not_ stop the error from propagating."
 
 (defmethod queue-append ((queue queue) (objects list))
   (cond ((null (queue-first queue))
-	 (setf (queue-first queue) objects
-	       (queue-last queue) (last objects)))
-	(t
-	 (setf (cdr (queue-last queue)) objects
-	       (queue-last queue) (last objects))))
+         (setf (queue-first queue) objects
+               (queue-last queue) (last objects)))
+        (t
+         (setf (cdr (queue-last queue)) objects
+               (queue-last queue) (last objects))))
   queue)
 
 (defmethod queue-append ((queue queue) object)
@@ -1479,30 +1479,30 @@ don't get garbage collected.  It may work for your own code, though.
 Locked packages are left alone.  If you need to do those too, unlock
 them first."
   (flet ((forget (symbol)
-	   (dolist (type '(compiler-macro function method-combination setf structure type variable))
-	     (when (ignore-errors (documentation symbol type))
-	       (setf (documentation symbol type) nil)))))
+           (dolist (type '(compiler-macro function method-combination setf structure type variable))
+             (when (ignore-errors (documentation symbol type))
+               (setf (documentation symbol type) nil)))))
     (setf packages (mapcar #'(lambda (pkg)
-			       (if (packagep pkg)
-				   (package-name pkg)
-				   (package-name (find-package pkg))))
-			   packages))
+                               (if (packagep pkg)
+                                   (package-name pkg)
+                                   (package-name (find-package pkg))))
+                           packages))
     (setf packages
-	  ;; don't try to modify locked packages
-	  (remove-if #'package-locked-p
-		     (mapcar #'find-package
-			     (or packages
-				 (list-all-packages)))))
+          ;; don't try to modify locked packages
+          (remove-if #'package-locked-p
+                     (mapcar #'find-package
+                             (or packages
+                                 (list-all-packages)))))
     (dolist (package packages)
       (with-package-iterator (next package :internal :external)
-	(loop
-	   (multiple-value-bind (more? symbol) (next)
-	     (unless more?
-	       (return))
-	     (forget symbol)))))
+        (loop
+           (multiple-value-bind (more? symbol) (next)
+             (unless more?
+               (return))
+             (forget symbol)))))
     #+(OR) (do-all-symbols (symbol)
-	     (when (member (symbol-package symbol) packages)
-	       (forget symbol))))
+             (when (member (symbol-package symbol) packages)
+               (forget symbol))))
   (values))
 
 (defun load-compiled (pathname &optional compiled-pathname)
@@ -1513,13 +1513,13 @@ the compiled version is more recent than its source."
     (setf pathname (merge-pathnames pathname (make-pathname :type "lisp"))))
   (if (probe-file pathname)
       (progn
-	(setf compiled-pathname (or compiled-pathname
-				    (compile-file-pathname pathname)))
-	(when (or (not (probe-file compiled-pathname))
-		  (< (file-write-date compiled-pathname)
-		     (file-write-date pathname)))
-	  (compile-file pathname))
-	(load compiled-pathname))
+        (setf compiled-pathname (or compiled-pathname
+                                    (compile-file-pathname pathname)))
+        (when (or (not (probe-file compiled-pathname))
+                  (< (file-write-date compiled-pathname)
+                     (file-write-date pathname)))
+          (compile-file pathname))
+        (load compiled-pathname))
       (error "Can't load ~A as it doesn't exist." pathname)))
 
 ;; Just a silly mnemonic for those used to lesser languages
@@ -1535,14 +1535,14 @@ also specify forms, not just variables."
   (let ((*print-pretty* nil))
     `(let ((*print-circle* t))
        (format t ,(format nil "~~&~{~A=~~:W~~%~}" things)
-	       ,@things)
+               ,@things)
        (finish-output)
        (values))))
 
 (defmacro memoize-function (name &key test)
   "Make function NAME memoized.  TEST is passed to MAKE-HASH-TABLE."
   `(setf (get ',name 'results-hash-table)
-	 (make-hash-table ,@(when test (list :test test)))))
+         (make-hash-table ,@(when test (list :test test)))))
 
 (defmacro defun-memoized (name args &body forms)
   "Define function NAME and make it memoizable.  Then the MEMOIZED
@@ -1560,13 +1560,13 @@ memoized.  The next time this form is executed with the same argument
 value, the memoized result is returned instead of executing FUNCTION."
   (with-gensyms (table key result not-found)
     `(be* ,key ,arg
-	  ,table (get ',function 'results-hash-table)
-	  ,not-found (list nil)
-	  ,result (gethash ,key ,table ,not-found)
+          ,table (get ',function 'results-hash-table)
+          ,not-found (list nil)
+          ,result (gethash ,key ,table ,not-found)
        (if (eq ,not-found ,result)
-	   (setf (gethash ,key ,table)
-		 (,function ,key))
-	   ,result))))
+           (setf (gethash ,key ,table)
+                 (,function ,key))
+           ,result))))
 
 
 (defmacro save-file-excursion ((stream &optional position) &body forms)
@@ -1587,9 +1587,9 @@ before FORMS.  Optionally POSITION can be set to the starting offset."
 (defun getenv (var)
   "Return the string associate to VAR in the system environment."
   #+cmu (cdr (assoc (if (symbolp var)
-			var
-			(intern var :keyword))
-		    ext:*environment-list*))
+                        var
+                        (intern var :keyword))
+                    ext:*environment-list*))
   #+sbcl (sb-ext:posix-getenv (string var))
   #+lispworks (hcl:getenv var)
   #+clisp (ext:getenv (string var))
@@ -1597,16 +1597,16 @@ before FORMS.  Optionally POSITION can be set to the starting offset."
   (error "GETENV not implemented for your Lisp system."))
 
 #+clisp (ffi:def-call-out %setenv
-	    (:name "setenv")
-	  (:arguments (name ffi:c-string) (value ffi:c-string) (overwrite ffi:int))
-	  (:return-type ffi:int)
-	  (:library "libc.so"))
+            (:name "setenv")
+          (:arguments (name ffi:c-string) (value ffi:c-string) (overwrite ffi:int))
+          (:return-type ffi:int)
+          (:library "libc.so"))
 
 #+clisp (ffi:def-call-out %unsetenv
-	    (:name "unsetenv")
-	  (:arguments (name ffi:c-string))
-	  (:return-type ffi:int)
-	  (:library "libc.so"))
+            (:name "unsetenv")
+          (:arguments (name ffi:c-string))
+          (:return-type ffi:int)
+          (:library "libc.so"))
 
 (defun setenv (name value &optional (overwrite t))
   (typecase value
@@ -1616,30 +1616,30 @@ before FORMS.  Optionally POSITION can be set to the starting offset."
     (t
      (setf value (format nil "~A" value))))
   #+sbcl (unless (zerop (sb-posix:setenv name value (if overwrite 1 0)))
-	   (error "unable to setenv ~A: errno=~A." name
-		  (sb-alien:get-errno)))
+           (error "unable to setenv ~A: errno=~A." name
+                  (sb-alien:get-errno)))
   #+cmu (be key (keywordify name)
-	  (aif (assoc key
-		      ext:*environment-list*)
-	       (when overwrite
-		 (setf (cdr it) value))
-	       (setf ext:*environment-list*
-		     (cons (cons key value)
-			   ext:*environment-list*))))
+          (aif (assoc key
+                      ext:*environment-list*)
+               (when overwrite
+                 (setf (cdr it) value))
+               (setf ext:*environment-list*
+                     (cons (cons key value)
+                           ext:*environment-list*))))
   #-(or cmu sbcl) (unless (zerop (%setenv name value (if overwrite 1 0)))
-		    (error "unable to setenv ~A." name)))
+                    (error "unable to setenv ~A." name)))
 
 (defun unsetenv (name)
   #+sbcl (unless (zerop (sb-posix:unsetenv name))
-	   (error "unable to unsetenv ~A: errno=~A." name
-		  (sb-alien:get-errno)))
+           (error "unable to unsetenv ~A: errno=~A." name
+                  (sb-alien:get-errno)))
   #+cmu (be key (keywordify name)
-	  (setf ext:*environment-list*
-		(delete-if #'(lambda (e)
-			       (eq (car e) key))
-			   ext:*environment-list*)))
+          (setf ext:*environment-list*
+                (delete-if #'(lambda (e)
+                               (eq (car e) key))
+                           ext:*environment-list*)))
   #-(or cmu sbcl) (unless (zerop (%unsetenv name))
-		    (error "unable to unsetenv ~A." name)))
+                    (error "unable to unsetenv ~A." name)))
 
 (defun (setf getenv) (value name)
   (if value
@@ -1650,38 +1650,38 @@ before FORMS.  Optionally POSITION can be set to the starting offset."
 #-cmu
 (defmacro with-system-environment ((&rest var-and-values) &body body)
   (be gensym-alist (mapcar #'(lambda (vv)
-			       (list (gensym) (string (car vv)) (cadr vv)))
-			   var-and-values)
+                               (list (gensym) (string (car vv)) (cadr vv)))
+                           var-and-values)
       `(let ,(mapcar #'(lambda (vv)
-			 (destructuring-bind (varsym var value) vv
-			   (declare (ignore value))
-			   `(,varsym (getenv ,var))))
-		     gensym-alist)
-	 (unwind-protect
-	      (progn
-		,@(mapcar #'(lambda (vv)
-			      (destructuring-bind (varsym var value) vv
-				(declare (ignore varsym))
-				`(setenv ,var ,value)))
-			  gensym-alist)
-		,@body)
-	   ,@(mapcar #'(lambda (vv)
-			 (destructuring-bind (varsym var value) vv
-			   (declare (ignore value))
-			   `(if ,varsym
-				(setenv ,var ,varsym)
-				(unsetenv ,var))))
-		     gensym-alist)))))
+                         (destructuring-bind (varsym var value) vv
+                           (declare (ignore value))
+                           `(,varsym (getenv ,var))))
+                     gensym-alist)
+         (unwind-protect
+              (progn
+                ,@(mapcar #'(lambda (vv)
+                              (destructuring-bind (varsym var value) vv
+                                (declare (ignore varsym))
+                                `(setenv ,var ,value)))
+                          gensym-alist)
+                ,@body)
+           ,@(mapcar #'(lambda (vv)
+                         (destructuring-bind (varsym var value) vv
+                           (declare (ignore value))
+                           `(if ,varsym
+                                (setenv ,var ,varsym)
+                                (unsetenv ,var))))
+                     gensym-alist)))))
 
 #+cmu
 (defmacro with-system-environment ((&rest var-and-values) &body body)
   `(let ((ext:*environment-list*
-	  (append (list ,@(mapcar #'(lambda (vv)
-				      (destructuring-bind (variable value) vv
-					`(cons ,(keywordify variable)
-					       ,value)))
-				  var-and-values))
-		  ext:*environment-list*)))
+          (append (list ,@(mapcar #'(lambda (vv)
+                                      (destructuring-bind (variable value) vv
+                                        `(cons ,(keywordify variable)
+                                               ,value)))
+                                  var-and-values))
+                  ext:*environment-list*)))
      ,@body))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -1693,7 +1693,7 @@ before FORMS.  Optionally POSITION can be set to the starting offset."
      for l2 = (member item l :key key :test test)
      while l2
      do (setf result l2
-	      l (cdr l2))
+              l (cdr l2))
      finally (return result)))
 
 
@@ -1705,13 +1705,13 @@ before FORMS.  Optionally POSITION can be set to the starting offset."
     (loop
        for i from 0 below (length string)
        do (be c (char string i)
-	    (cond ((char= c #\\)
-		   (setf c (char string (incf i))))
-		  ((find c  ".+()|^$")
-		   (write-char #\\ out))
-		  ((char= c #\*)
-		   (write-char #\. out))
-		  ((char= c #\?)
-		   (setf c #\.)))
-	    (write-char c out)))
+            (cond ((char= c #\\)
+                   (setf c (char string (incf i))))
+                  ((find c  ".+()|^$")
+                   (write-char #\\ out))
+                  ((char= c #\*)
+                   (write-char #\. out))
+                  ((char= c #\?)
+                   (setf c #\.)))
+            (write-char c out)))
     (write-char #\$ out)))
diff --git a/third_party/lisp/sclf/serial.lisp b/third_party/lisp/sclf/serial.lisp
index 936c61606386..41d32e4c49fd 100644
--- a/third_party/lisp/sclf/serial.lisp
+++ b/third_party/lisp/sclf/serial.lisp
@@ -33,28 +33,28 @@
   (be class (class-of object)
     (pprint-logical-block (stream (copy-list (class-slots class)) :prefix "#.(" :suffix ")")
       (flet ((spc ()
-	       (write-char #\space stream)))
-	(write 'reconstruct-object :stream stream)
-	(spc)
-	(write (class-name class) :stream stream :escape t :readably t :pretty t)
-	(pprint-exit-if-list-exhausted)
-	(spc)
-	(loop
-	   (be* slot (pprint-pop)
-		slot-name (slot-definition-name slot)
-		initarg (car (slot-definition-initargs slot))
-	     (when (and initarg
-			(slot-boundp object slot-name))
-	       (write initarg :stream stream)
-	       (spc)
-	       (when *print-pretty*
-		 (pprint-newline :miser stream))
-	       (write (slot-value object slot-name)
-		      :stream stream)
-	       (pprint-exit-if-list-exhausted)
-	       (if *print-pretty*
-		   (pprint-newline :linear stream)
-		   (spc)))))))))
+               (write-char #\space stream)))
+        (write 'reconstruct-object :stream stream)
+        (spc)
+        (write (class-name class) :stream stream :escape t :readably t :pretty t)
+        (pprint-exit-if-list-exhausted)
+        (spc)
+        (loop
+           (be* slot (pprint-pop)
+                slot-name (slot-definition-name slot)
+                initarg (car (slot-definition-initargs slot))
+             (when (and initarg
+                        (slot-boundp object slot-name))
+               (write initarg :stream stream)
+               (spc)
+               (when *print-pretty*
+                 (pprint-newline :miser stream))
+               (write (slot-value object slot-name)
+                      :stream stream)
+               (pprint-exit-if-list-exhausted)
+               (if *print-pretty*
+                   (pprint-newline :linear stream)
+                   (spc)))))))))
 
 (defmethod print-object ((object printable-object-mixin) stream)
   (if *print-readably*
diff --git a/third_party/lisp/sclf/sysproc.lisp b/third_party/lisp/sclf/sysproc.lisp
index 85c2517e0002..1dd559ebe3a2 100644
--- a/third_party/lisp/sclf/sysproc.lisp
+++ b/third_party/lisp/sclf/sysproc.lisp
@@ -66,8 +66,8 @@ error is not discarded.")
      #+cmu unix:sigcont
      #+sbcl sb-posix:sigcont)
     #+freebsd((:emt :emulate-instruction)
-	      #+cmu unix:sigemt
-	      #+sbcl sb-posix:sigemt)
+              #+cmu unix:sigemt
+              #+sbcl sb-posix:sigemt)
     ((:fpe :floating-point-exception)
      #+cmu unix:sigfpe
      #+sbcl sb-posix:sigfpe)
@@ -189,29 +189,29 @@ error is not discarded.")
   "Run PROGRAM with ARGUMENTS (a list) and return a process object."
   ;; convert arguments to strings
   (setf arguments
-	(mapcar #'(lambda (item)
-		    (typecase item
-		      (string item)
-		      (pathname (native-namestring item))
-		      (t (format nil "~A" item))))
-		arguments))
+        (mapcar #'(lambda (item)
+                    (typecase item
+                      (string item)
+                      (pathname (native-namestring item))
+                      (t (format nil "~A" item))))
+                arguments))
   (when *run-verbose*
     (unless error
       (setf error t))
     (format t "~&; run-pipe ~A~{ ~S~}~%" program arguments))
   #+cmu (ext:run-program program arguments
-			 :wait wait
-			 :pty pty
-			 :input input
-			 :output output
-			 :error (or error *run-verbose*))
+                         :wait wait
+                         :pty pty
+                         :input input
+                         :output output
+                         :error (or error *run-verbose*))
   #+sbcl (sb-ext:run-program program arguments
-			     :search t
-			     :wait wait
-			     :pty pty
-			     :input input
-			     :output output
-			     :error (or error *run-verbose*))
+                             :search t
+                             :wait wait
+                             :pty pty
+                             :input input
+                             :output output
+                             :error (or error *run-verbose*))
   #-(or sbcl cmu)
   (error "Unsupported Lisp system."))
 
@@ -220,16 +220,16 @@ error is not discarded.")
 return the input and output streams and process object of that
 process."
   (be process (run-program program arguments
-			   :wait nil
-			   :pty nil
-			   :input (when (member direction '(:output :input-output :io))
-				    :stream)
-			   :output (when (member direction '(:input :input-output :io))
-				     :stream)
-			   :error error)
+                           :wait nil
+                           :pty nil
+                           :input (when (member direction '(:output :input-output :io))
+                                    :stream)
+                           :output (when (member direction '(:input :input-output :io))
+                                     :stream)
+                           :error error)
     (values (sysproc-output process)
-	    (sysproc-input process)
-	    process))
+            (sysproc-input process)
+            process))
   #-(or sbcl cmu)
   (error "Unsupported Lisp system."))
 
@@ -245,7 +245,7 @@ process."
   "Run a Bourne Shell command asynchronously. Return a process
 object if provided by your Lisp implementation."
   (run-program *bourne-shell* (list "-c" (apply #'format nil fmt args))
-	       :wait nil))
+               :wait nil))
 
 (defmacro with-open-pipe ((in out program arguments &key (process (gensym)) error pty) &body forms)
   "Run BODY with IN and OUT bound respectively to an input and an
@@ -253,36 +253,36 @@ output stream connected to a system process created by running PROGRAM
 with ARGUMENTS.  If IN or OUT are NIL, then don't create that stream."
   (with-gensyms (prg args)
     `(be* ,prg ,program
-	  ,args ,arguments
-	  ,process (run-program ,prg ,args
-				:output ,(case in
-					       ((t nil) in)
-					       (t :stream))
-				:input ,(case out
-					      ((t nil) out)
-					      (t :stream))
-				:wait nil
-				:pty ,pty
-				,@(when error `(:error ,error)))
+          ,args ,arguments
+          ,process (run-program ,prg ,args
+                                :output ,(case in
+                                               ((t nil) in)
+                                               (t :stream))
+                                :input ,(case out
+                                              ((t nil) out)
+                                              (t :stream))
+                                :wait nil
+                                :pty ,pty
+                                ,@(when error `(:error ,error)))
        (if ,process
-	   (let (,@(case in
-			 ((t nil))
-			 (t `((,in (sysproc-output ,process)))))
-		 ,@(case out
-			 ((t nil))
-			 (t `((,out (sysproc-input ,process))))))
-	     (unwind-protect
-		  (progn
-		    ,@forms)
-	       ,@(case in
-		       ((t nil))
-		       (t `((close ,in))))
-	       ,@(case out
-		       ((t nil))
-		       (t `((close ,out))))
-	       (when (sysproc-alive-p ,process)
-		 (sysproc-kill ,process :term))))
-	   (error "unable to run ~A~{ ~A~}." ,prg ,args)))))
+           (let (,@(case in
+                         ((t nil))
+                         (t `((,in (sysproc-output ,process)))))
+                 ,@(case out
+                         ((t nil))
+                         (t `((,out (sysproc-input ,process))))))
+             (unwind-protect
+                  (progn
+                    ,@forms)
+               ,@(case in
+                       ((t nil))
+                       (t `((close ,in))))
+               ,@(case out
+                       ((t nil))
+                       (t `((close ,out))))
+               (when (sysproc-alive-p ,process)
+                 (sysproc-kill ,process :term))))
+           (error "unable to run ~A~{ ~A~}." ,prg ,args)))))
 
 
 (defun sysproc-set-signal-callback (signal handler)
diff --git a/third_party/lisp/sclf/time.lisp b/third_party/lisp/sclf/time.lisp
index ca1e1902a92c..71b943aa431a 100644
--- a/third_party/lisp/sclf/time.lisp
+++ b/third_party/lisp/sclf/time.lisp
@@ -50,15 +50,15 @@
   "Return true if YEAR is a leap year."
   (and (zerop (mod year 4))
        (or (not (zerop (mod year 100)))
-	   (zerop (mod year 400)))))
+           (zerop (mod year 400)))))
 
 (defun last-day-of-month (month year)
   "Return the last day of the month as integer."
   (be last (elt #(31 28 31 30 31 30 31 31 30 31 30 31) (1- month))
     (if (and (= last 28)
-	     (leap-year-p year))
-	(1+ last)
-	last)))
+             (leap-year-p year))
+        (1+ last)
+        last)))
 
 (defun add-months (months epoch &optional time-zone)
   "Add MONTHS to EPOCH, which is a universal time.  MONTHS can be
@@ -66,12 +66,12 @@ negative."
   (multiple-value-bind (ss mm hh day month year) (decode-universal-time epoch time-zone)
     (multiple-value-bind (y m) (floor (+ month months -1) 12)
       (let ((new-month (1+ m))
-	    (new-year (+ year y)))
-	(encode-universal-time ss mm hh
-			       (min day (last-day-of-month new-month (year epoch)))
-			       new-month
-			       new-year
-			       time-zone)))))
+            (new-year (+ year y)))
+        (encode-universal-time ss mm hh
+                               (min day (last-day-of-month new-month (year epoch)))
+                               new-month
+                               new-year
+                               time-zone)))))
 
 (defun add-days (days epoch)
   "Add DAYS to EPOCH, which is an universal time.  DAYS can be
@@ -86,7 +86,7 @@ negative."
   "Return an ISO 8601 string representing TIME.  The time zone is
 included if WITH-TIMEZONE-P is true."
   (flet ((format-timezone (zone)
-	   (if (zerop zone)
+           (if (zerop zone)
                "Z"
                (multiple-value-bind (h m) (truncate (abs zone) 1.0)
                  ;; Sign of time zone is reversed in ISO 8601 relative
@@ -94,82 +94,82 @@ included if WITH-TIMEZONE-P is true."
                  (format nil "~:[+~;-~]~2,'0D:~2,'0D"
                          (> zone 0) h (round m))))))
     (multiple-value-bind (second minute hour day month year dow dst zone)
-	(decode-universal-time time time-zone)
+        (decode-universal-time time time-zone)
       (declare (ignore dow dst))
       (if basic
-	  (format nil "~4,'0D~2,'0D~2,'0DT~2,'0D~2,'0D~2,'0D~[~*~;~A~]"
-		  year month day hour minute second
-		  with-timezone-p (format-timezone zone))
-	  (format nil "~4,'0D-~2,'0D-~2,'0DT~2,'0D:~2,'0D:~2,'0D~:[~*~;~A~]"
-		  year month day hour minute second
-		  with-timezone-p (format-timezone zone))))))
+          (format nil "~4,'0D~2,'0D~2,'0DT~2,'0D~2,'0D~2,'0D~[~*~;~A~]"
+                  year month day hour minute second
+                  with-timezone-p (format-timezone zone))
+          (format nil "~4,'0D-~2,'0D-~2,'0DT~2,'0D:~2,'0D:~2,'0D~:[~*~;~A~]"
+                  year month day hour minute second
+                  with-timezone-p (format-timezone zone))))))
 
 (defun parse-iso-time-string (time-string)
   "Parse an ISO 8601 formated string and return the universal time.
 It can parse the basic and the extended format, but may not be able to
 cover all the cases."
   (labels ((parse-delimited-string (string delimiter n)
-	     ;; Parses a delimited string and returns a list of
-	     ;; n integers found in that string.
-	     (let ((answer (make-list n :initial-element 0)))
-	       (loop
-		  for i upfrom 0
-		  for start = 0 then (1+ end)
-		  for end = (position delimiter string :start (1+ start))
-		  do (setf (nth i answer)
-			   (parse-integer (subseq string start end)))
-		  when (null end) return t)
-	       (values-list answer)))
-	   (parse-fixed-field-string (string field-sizes)
-	     ;; Parses a string with fixed length fields and returns
-	     ;; a list of integers found in that string.
-	     (let ((answer (make-list (length field-sizes) :initial-element 0)))
-	       (loop
-		  with len = (length string)
-		  for start = 0 then (+ start field-size)
-		  for field-size in field-sizes
-		  for i upfrom 0
-		  while (< start len)
-		  do (setf (nth i answer)
-			   (parse-integer (subseq string start (+ start field-size)))))
-	       (values-list answer)))
-	   (parse-iso8601-date (date-string)
-	     (let ((hyphen-pos (position #\- date-string)))
-	       (if hyphen-pos
-		   (parse-delimited-string date-string #\- 3)
-		   (parse-fixed-field-string date-string '(4 2 2)))))
-	   (parse-iso8601-timeonly (time-string)
-	     (let* ((colon-pos (position #\: time-string))
-		    (zone-pos (or (position #\- time-string)
-				  (position #\+ time-string)))
-		    (timeonly-string (subseq time-string 0 zone-pos))
-		    (zone-string (when zone-pos (subseq time-string (1+ zone-pos))))
-		    (time-zone nil))
-	       (when zone-pos
-		 (multiple-value-bind (zone-h zone-m)
-		     (parse-delimited-string zone-string #\: 2)
-		   (setq time-zone (+ zone-h (/ zone-m 60)))
-		   (when (char= (char time-string zone-pos) #\-)
-		     (setq time-zone (- time-zone)))))
-	       (multiple-value-bind (hh mm ss)
-		   (if colon-pos
-		       (parse-delimited-string timeonly-string #\: 3)
-		       (parse-fixed-field-string timeonly-string '(2 2 2)))
-		 (values hh mm ss time-zone)))))
+             ;; Parses a delimited string and returns a list of
+             ;; n integers found in that string.
+             (let ((answer (make-list n :initial-element 0)))
+               (loop
+                  for i upfrom 0
+                  for start = 0 then (1+ end)
+                  for end = (position delimiter string :start (1+ start))
+                  do (setf (nth i answer)
+                           (parse-integer (subseq string start end)))
+                  when (null end) return t)
+               (values-list answer)))
+           (parse-fixed-field-string (string field-sizes)
+             ;; Parses a string with fixed length fields and returns
+             ;; a list of integers found in that string.
+             (let ((answer (make-list (length field-sizes) :initial-element 0)))
+               (loop
+                  with len = (length string)
+                  for start = 0 then (+ start field-size)
+                  for field-size in field-sizes
+                  for i upfrom 0
+                  while (< start len)
+                  do (setf (nth i answer)
+                           (parse-integer (subseq string start (+ start field-size)))))
+               (values-list answer)))
+           (parse-iso8601-date (date-string)
+             (let ((hyphen-pos (position #\- date-string)))
+               (if hyphen-pos
+                   (parse-delimited-string date-string #\- 3)
+                   (parse-fixed-field-string date-string '(4 2 2)))))
+           (parse-iso8601-timeonly (time-string)
+             (let* ((colon-pos (position #\: time-string))
+                    (zone-pos (or (position #\- time-string)
+                                  (position #\+ time-string)))
+                    (timeonly-string (subseq time-string 0 zone-pos))
+                    (zone-string (when zone-pos (subseq time-string (1+ zone-pos))))
+                    (time-zone nil))
+               (when zone-pos
+                 (multiple-value-bind (zone-h zone-m)
+                     (parse-delimited-string zone-string #\: 2)
+                   (setq time-zone (+ zone-h (/ zone-m 60)))
+                   (when (char= (char time-string zone-pos) #\-)
+                     (setq time-zone (- time-zone)))))
+               (multiple-value-bind (hh mm ss)
+                   (if colon-pos
+                       (parse-delimited-string timeonly-string #\: 3)
+                       (parse-fixed-field-string timeonly-string '(2 2 2)))
+                 (values hh mm ss time-zone)))))
     (let ((time-separator (position #\T time-string)))
       (multiple-value-bind (year month date)
-	  (parse-iso8601-date
-	   (subseq time-string 0 time-separator))
-	(if time-separator
-	    (multiple-value-bind (hh mm ss zone)
-		(parse-iso8601-timeonly
-		 (subseq time-string (1+ time-separator)))
-	      (if zone
-		  ;; Sign of time zone is reversed in ISO 8601
-		  ;; relative to Common Lisp convention!
-		  (encode-universal-time ss mm hh date month year (- zone))
-		  (encode-universal-time ss mm hh date month year)))
-	    (encode-universal-time 0 0 0 date month year))))))
+          (parse-iso8601-date
+           (subseq time-string 0 time-separator))
+        (if time-separator
+            (multiple-value-bind (hh mm ss zone)
+                (parse-iso8601-timeonly
+                 (subseq time-string (1+ time-separator)))
+              (if zone
+                  ;; Sign of time zone is reversed in ISO 8601
+                  ;; relative to Common Lisp convention!
+                  (encode-universal-time ss mm hh date month year (- zone))
+                  (encode-universal-time ss mm hh date month year)))
+            (encode-universal-time 0 0 0 date month year))))))
 
 (defun time-string (time &optional time-zone)
   "Return a string representing TIME in the form:
@@ -177,11 +177,11 @@ cover all the cases."
   (multiple-value-bind (ss mm hh day month year week-day)
       (decode-universal-time time time-zone)
     (format nil "~A ~A ~A ~D:~2,'0D:~2,'0D ~A"
-	    (subseq (week-day->string week-day) 0 3)
-	    (subseq (month->string month) 0 3)
-	    day
-	    hh mm ss
-	    year)))
+            (subseq (week-day->string week-day) 0 3)
+            (subseq (month->string month) 0 3)
+            day
+            hh mm ss
+            year)))
 
 (defun beginning-of-month (month year &optional time-zone)
   (encode-universal-time 0 0 0 1 month year time-zone))
@@ -194,7 +194,7 @@ cover all the cases."
 of the year needs to have Thursday in this YEAR, the returned
 time can actually fall in the previous year."
   (let* ((Jan-1st (encode-universal-time 0 0 0 1 1 year time-zone))
-	 (start (- 4 (week-day (add-days 4 Jan-1st)))))
+         (start (- 4 (week-day (add-days 4 Jan-1st)))))
     (add-days start Jan-1st)))
 
 (defun beginning-of-week (week year &optional time-zone)
@@ -218,7 +218,7 @@ time can fall in the next year."
   "Return the day within the year of TIME starting from 1 up to
 365 (or 366)."
   (1+ (truncate (seconds-from-beginning-of-the-year time time-zone)
-		(* 60 60 24))))
+                (* 60 60 24))))
 
 (defun week (time &optional time-zone)
   "Return the number of the week and the year TIME referes to.
@@ -226,26 +226,26 @@ Week is an integer from 1 to 52.  Due to the way the first week
 of the year is calculated a day in one year could actually be in
 the last week of the previous or next year."
   (let* ((year (year time))
-	 (start (beginning-of-first-week year time-zone))
-	 (days-from-start (truncate (- time start) (* 60 60 24)))
-	 (weeks (truncate days-from-start 7))
-	 (week-number (mod weeks 52)))
+         (start (beginning-of-first-week year time-zone))
+         (days-from-start (truncate (- time start) (* 60 60 24)))
+         (weeks (truncate days-from-start 7))
+         (week-number (mod weeks 52)))
     (values (1+ week-number)
-	    (cond ((< weeks 0)
-		   (1- year))
-		  ((> weeks 51)
-		   (1+ year))
-		  (t year)))))
+            (cond ((< weeks 0)
+                   (1- year))
+                  ((> weeks 51)
+                   (1+ year))
+                  (t year)))))
 
 (defun week-day->string (day &optional sunday-first)
   "Return the weekday string corresponding to DAY number."
   (elt (if sunday-first
-	   #("Sunday" "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday")
-	   #("Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday" "Sunday"))
+           #("Sunday" "Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday")
+           #("Monday" "Tuesday" "Wednesday" "Thursday" "Friday" "Saturday" "Sunday"))
        day))
 
 (defconst +month-names+  #("January" "February" "March" "April" "May" "June" "July"
-			   "August" "September" "October" "November" "December"))
+                           "August" "September" "October" "November" "December"))
 
 (defun month->string (month)
   "Return the month string corresponding to MONTH number."
@@ -257,32 +257,32 @@ the last week of the previous or next year."
 (defun print-time-span (span &optional stream)
   "Print in English the time SPAN expressed in seconds."
   (let* ((minute 60)
-	 (hour (* minute 60))
-	 (day (* hour 24))
-	 (seconds span))
+         (hour (* minute 60))
+         (day (* hour 24))
+         (seconds span))
     (macrolet ((split (divisor)
-		 `(when (>= seconds ,divisor)
-		    (prog1 (truncate seconds ,divisor)
-		      (setf seconds (mod seconds ,divisor))))))
+                 `(when (>= seconds ,divisor)
+                    (prog1 (truncate seconds ,divisor)
+                      (setf seconds (mod seconds ,divisor))))))
       (let* ((days (split day))
-	     (hours (split hour))
-	     (minutes (split minute)))
-	(format stream "~{~A~^ ~}" (remove nil
-					   (list
-					    (when days
-					      (format nil "~D day~:P" days))
-					    (when hours
-					      (format nil "~D hour~:P" hours))
-					    (when minutes
-					      (format nil "~D minute~:P" minutes))
-					    (when (or (> seconds 0)
-						      (= span 0))
-					      (format nil "~D second~:P" seconds)))))))))
+             (hours (split hour))
+             (minutes (split minute)))
+        (format stream "~{~A~^ ~}" (remove nil
+                                           (list
+                                            (when days
+                                              (format nil "~D day~:P" days))
+                                            (when hours
+                                              (format nil "~D hour~:P" hours))
+                                            (when minutes
+                                              (format nil "~D minute~:P" minutes))
+                                            (when (or (> seconds 0)
+                                                      (= span 0))
+                                              (format nil "~D second~:P" seconds)))))))))
 
 (defun next-week-day (epoch week-day &optional time-zone)
   "Return the universal time of the next WEEK-DAY starting from epoch."
   (add-days (mod (- week-day (week-day epoch time-zone)) 7)
-	    epoch))
+            epoch))
 
 (defun next-monday (epoch &optional time-zone)
   "Return the universal time of the next Monday starting from