(FILECREATED " 2-Sep-85 18:51:03" {ERIS}<LISPCORE>SOURCES>EDIT.;25 111960 

      changes to:  (FNS EDITF EDITV)

      previous date: "12-Aug-85 09:01:51" {ERIS}<LISPCORE>SOURCES>EDIT.;23)


(* Copyright (c) 1983, 1984, 1985 by Xerox Corporation. All rights reserved. The following program was
 created in 1983  but has not been published within the meaning of the copyright law, is furnished 
under license, and may not be used, copied and/or disclosed except in accordance with the terms of 
said license.)

(PRETTYCOMPRINT EDITCOMS)

(RPAQQ EDITCOMS [(FNS ## EDIT* EDIT: EDITDEFAULT EDITDEFAULT1 EDITFNS EDITH EDITRAN EDITTO EDITXTR 
		      EDLOC EDLOCL EDOR EDRPT EDUP ESUBST ESUBST1 EDITF EDIT EDITFERROR EDITFA EDITFB 
		      EDITLOADFNS? EDITE EDITELT UNSAVEBLOCK? EDITF1 EDITF2 EDITV EDITP EDITL EDITL0 
		      EDITL1 EDITL2 UNDOEDITL EDITCOM EDITCOMA EDITCOML EDITCONT EDITMAC EDITMBD 
		      EDITMV EDITCOMS EDIT!UNDO UNDOEDITCOM UNDOEDITCOM1 EDITCOM1 EDITSAVE EDITSAVE1 
		      EDITSMASH EDITSMASH1 EDITSW EDITNCONC EDITAPPEND EDIT1F EDIT2F EDIT4E EDIT4E1 
		      EDITQF EDIT4F EDIT4F1 EDIT4F2 EDIT4F3 EDITFPAT EDITFPAT1 EDITFINDP FEDITFINDP 
		      EDITBELOW EDITBF EDITBF1 EDITNTH BPNT BPNT0 EDIT.RI EDIT.RO EDIT.LI EDIT.LO 
		      EDIT.BI EDIT.BO)
	(INITVARS (EDITRDTBL (COPYREADTABLE T)))
	(VARS DUMMY-EDIT-FUNCTION-BODY)
	(USERMACROS EDIT)
	(BLOCKS (EDITBLOCK EDITL EDITL0 EDITL1 UNDOEDITL EDITCOM EDITCOMA EDITCOML EDITMAC EDITCOMS 
			   EDIT!UNDO UNDOEDITCOM UNDOEDITCOM1 EDITCOM1 EDITSMASH EDITSMASH1 EDITNCONC 
			   EDITAPPEND EDIT1F EDIT2F EDITNTH BPNT BPNT0 EDIT.RI EDIT.RO EDIT.LI 
			   EDIT.LO EDIT.BI EDIT.BO EDITDEFAULT EDITDEFAULT1 ## EDUP EDIT* EDOR EDRPT 
			   EDLOC EDLOCL EDIT: EDITMBD EDITXTR EDITELT EDITCONT EDITSW EDITMV EDITTO 
			   EDITBELOW EDITRAN EDITSAVE EDITSAVE1 EDITH
			   (ENTRIES EDITL EDITL0 ## UNDOEDITL BPNT0 EDITCONT EDLOCL)
			   (SPECVARS L ATM COM LCFLG #1 #2 #3 UNDOLST UNDOLST1 LASTAIL MARKLST UNFIND 
				     LASTP1 LASTP2 COMS EDITCHANGES EDITHIST0 LISPXID)
			   (RETFNS EDITL0 EDITL1)
			   (BLKAPPLYFNS EDIT: EDITMBD EDITMV EDITXTR EDITSW)
			   (BLKLIBRARY NTH LAST MEMB NLEFT)
			   (NOLINKFNS PRINTDEF EDITRACEFN EDITUSERFN)
			   (LOCALFREEVARS FINDFLAG EDITHIST UNDOLST1 COM L L0 COM0 UNDOLST EDITLFLG 
					  ATM MARKLST EDITHIST0 UNFIND TYPEIN LCFLG LASTP1 LASTP2 
					  LASTAIL COPYFLG ORIGFLG COMS TOFLG C LVL EDITCHANGES 
					  EDITLISPFLG)
			   (GLOBALVARS EDITCALLS P.A.STATS EDITUNDOSTATS EDITUNDOSAVES SPELLSTATS1 
				       P.A.STATS EDITUSERFN EDITIME USERHANDLE DONTSAVEHISTORYCOMS 
				       COMPACTHISTORYCOMS EDITEVALSTATS MAXLOOP EDITCOMSL EDITCOMSA 
				       DWIMFLG CLISPTRANFLG EDITOPS HISTORYCOMS REREADFLG HISTSTR3 
				       EDITRDTBL EDITHISTORY HISTSTR0 READBUF LISPXHISTORY LISPXBUFS 
				       EDITRACEFN EDITMACROS USERMACROS CLISPARRAY CHANGESARRAY 
				       COMMENTFLG **COMMENT**FLG EDITESTATS EDITISTATS PRETTYFLG 
				       EDITSMASHUSERFN))
		(EDITFINDBLOCK EDIT4E EDIT4E1 EDITQF EDIT4F EDITFPAT EDITFPAT1 EDIT4F1 EDIT4F2 
			       EDIT4F3 EDITSMASH EDITSMASH1 EDITFINDP EDITBF EDITBF1 ESUBST
			       (ENTRIES EDIT4E EDIT4E1 EDITQF EDIT4F EDITFPAT EDITFINDP EDITBF ESUBST)
			       (LOCALFREEVARS C3 CHANGEFLG N TOPLVL FF NEWFLG FLG)
			       (GLOBALVARS EDITUNDOSAVES CHCONLST2 EDITQUIETFLG CHCONLST1 MAXLEVEL 
					   UPFINDFLG CLISPTRANFLG CHANGESARRAY CLISPARRAY EDITHISTORY)
			       (SPECVARS ATM L COM UNFIND LASTAIL UNDOLST1 EDITCHANGES))
		(NIL EDITF EDITFA EDITFB EDITV EDITP EDITE (SPECVARS EDITCHANGES EDITFN))
		(NIL ESUBST1 EDITFNS EDITLOADFNS? UNSAVEBLOCK? (GLOBALVARS FILELST FILEPKGFLG DWIMFLG 
									   DWIMWAIT DWIMLOADFNSFLG)
		     (NOLINKFNS WHEREIS)))
	(DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY COMPILERVARS
		  (ADDVARS (NLAMA EDITP EDITV EDITF EDITFNS ##)
			   (NLAML EDITF2)
			   (LAMA])
(DEFINEQ

(##
  [NLAMBDA COMS
    (PROG ((L (EVQ L))
	   UNDOLST1
	   (LASTAIL (EVQ LASTAIL))
	   (MARKLST (EVQ MARKLST))
	   (UNFIND (EVQ UNFIND)))

          (* ## is an external entry to the editblock, so local freevariables must be looked up or traps will occur.
	  LASAIL, MARKLT, and UNDOLST1 are rebound (and therefore looked up) here to avoid their being changed by the call to 
	  ##. The rest are looked up in EDITL0 because it is called with EDITLFLG=nil.)


          (RETURN (CAR (COND
			 ((NULL COMS)
			   L)
			 (T (EDITL0 L COMS])

(EDIT*
  [LAMBDA (N)                      (* Equivalent to a !0 followed by an appropriate number.)
    (CAR (SETQ L (PROG (COM (L L)
			    [X (PROG ((L L))
				     (EDUP)
				     (RETURN (CAR L]
			    TEM)

          (* COM is rebound here because EDITCOM resets it so that 'CURRENT' command is typed when failure occurs.
	  However, want to see BK typed, not !0 or -3)


		       (EDITCOM (QUOTE !0))
		       (SETQ TEM (CAR L))
		       [COND
			 ([COND
			     ((MINUSP N)
			       (SETQ TEM (NLEFT TEM (MINUS N)
						X)))
			     (T (LISTP (SETQ TEM (CDR (NTH X N]
			   (SETQ LASTAIL TEM)
			   (RETURN (CONS (CAR TEM)
					 L]
		       (ERROR!])

(EDIT:
  [LAMBDA (TYPE LC X)                                       (* DD: " 7-Oct-81 20:49")
    (PROG (TOFLG)
          [SETQ X (MAPCAR X (FUNCTION (LAMBDA (X)
			      (COND
				[(EQ (CAR (LISTP X))
												     |
				     (QUOTE ##))
				  (PROG ((L L)
					 UNDOLST1
					 (LCFLG T))
				        (RETURN (COPY (EDITCOMS (CDR X]
				(T X]
          (COND
	    (LC [COND
		  ((EQ (CAR (LISTP LC))
												     |
		       (QUOTE HERE))
		    (SETQ LC (CDR LC]
		(EDLOC LC T)))
          (EDUP)
          (SELECTQ TYPE
		   ((B BEFORE)
		     (EDIT2F -1 X))
		   [(A AFTER)
		     (COND
		       ((CDAR L)
			 (EDIT2F -2 X))
		       (T (EDITCOML (CONS (QUOTE N)
					  X)
				    COPYFLG]
		   [(: FOR)
		     (COND
		       ((OR X (CDAR L))
			 (EDIT2F 1 X))
		       ((MEMB (CAR L)
			      (CADR L))

          (* Singleton list, e.g. (-- ((A)) --) (DELETE A) -
	  result is (-- NIL --); or (-- (A) --) and say (DELETE A 1) result is (-- NIL --))


			 (EDUP)
			 (EDIT2F 1 (LIST NIL)))
		       (T                                   (* Delete last element of list of more than 1 element.)
			  (EDITCOMS (QUOTE (0 (NTH -2)
					      (2]
		   (ERROR!))
          (RETURN L])

(EDITDEFAULT
  [LAMBDA (EDITX)                                           (* rmk: " 6-JUN-82 15:13")
    (DECLARE (GLOBALVARS LPARKEY))
    (PROG (EDITY EDITZ LISPXHIST)                           (* LISPXHIST is rebound so that messages associated with
							    spelling corrections will not appear on history list.)
          (COND
	    [(AND (LISTP EDITX)
		  (SETQ EDITY (FASSOC (CAR EDITX)
				      EDITOPS)))
	      (RETURN (EDITRAN EDITX (CDR EDITY]
	    [LCFLG (RETURN (COND
			     ((EQ LCFLG T)
			       (EDITQF EDITX))
			     (T                             (* E.g. LCFLG= ← in BELOW command.)
				(EDITCOM (LIST LCFLG EDITX)
					 TYPEIN]
	    [(NLISTP EDITX)
	      (COND
		((AND EDITHISTORY TYPEIN (FMEMB EDITX HISTORYCOMS))
		  (RETURN (EDITH EDITX)))
		((AND EDITUSERFN (SETQ EDITY (EDITUSERFN EDITX)))
		  (RETURN (EDITCOM EDITY TYPEIN)))
		((AND (NOT (U-CASEP EDITX))
		      (FMEMB (SETQ EDITY (U-CASE EDITX))
			     EDITCOMSA))
		  (SETQ EDITX EDITY)
		  (GO BACKUP))
		((OR (FMEMB EDITX EDITCOMSL)
		     (AND EDITY (FMEMB EDITY EDITCOMSL)
			  (SETQ EDITX EDITY)))
		  (COND
		    ((AND [NULL (CDR (SETQ EDITX (COND
					 (TYPEIN (READLINE EDITRDTBL (LIST EDITX)))
					 ((EQ EDITX (CAR COMS))
					   (EDITSMASH COMS (CONS (CAR COMS)
								 (CDR COMS)))
					   (CAR COMS]
			  (NEQ (CAR EDITX)
			       (QUOTE :)))

          (* : by itself means DELETE if nothing else follows it. : is not an atomic command so that : -- will work as a line 
	  command.)


		      (ERROR!)))
		  (AND TYPEIN (EDITSAVE1 EDITX T)))
		((AND TYPEIN (NULL REREADFLG)
		      (EQ LPARKEY (NTHCHAR EDITX 1)))
		  [EDITDEFAULT1 (SETQ EDITY (RPLSTRING EDITX 1 (QUOTE "("]
		  (GNC EDITY)
		  [SETQ EDITX (READLINE EDITRDTBL (LIST (MKATOM EDITY]
		  (AND EDITHIST (FRPLACA (CAAAR EDITHISTORY)
					 EDITX)))
		((AND TYPEIN (NULL REREADFLG)
		      (FNTYP EDITX)
		      (COND
			([NULL (AND (CDR (SETQ EDITY (READLINE EDITRDTBL (LIST EDITX)
							       T)))
				    (NULL (CDDR EDITY))
				    (OR (NULL (CADR EDITY))
					(LISTP (CADR EDITY)))
				    (NOT (FMEMB (CAADR EDITY)
						EDITCOMSL]
			  (SETQ READBUF (APPEND (CDR EDITY)
						(CONS HISTSTR0 READBUF)))
                                                            (* put it back.)
			  NIL)
			(T T)))
		  (EDITDEFAULT1 (QUOTE E)
				EDITX)
		  (AND EDITHIST (FRPLACA (CAAR EDITHISTORY)
					 (SETQ EDITX EDITY)))
		  (EDITH (QUOTE !E))
		  (RETURN))
		([AND DWIMFLG (OR TYPEIN (EQ EDITX (CAR COMS)))
		      (SETQ EDITY
			(COND
			  ((AND (EQ (NTHCHARCODE EDITX -1)
				    (CHARCODE P))
				(GLC (SETQ EDITY (MKSTRING EDITX)))
				(SELECTQ (SETQ EDITY (MKATOM EDITY))
					 ((↑ ← UP NX BK !NX UNDO REDO CL DW)
					   T)
					 (NUMBERP EDITY)))
                                                            (* The GLC removes the last character.)
			    (EDITDEFAULT1 EDITY (QUOTE P))
			    (CONS EDITY (QUOTE P)))
			  (T (FIXSPELL EDITX 70 EDITCOMSA (NULL TYPEIN)
				       T]
		  [COND
		    ((LISTP EDITY)
		      [COND
			[TYPEIN (SETQ READBUF (CONS (CDR EDITY)
						    (CONS HISTSTR0 READBUF]
			(T (EDITSMASH COMS (CAR EDITY)
				      (CONS (CDR EDITY)
					    (CDR COMS]
		      (SETQ EDITY (CAR EDITY)))
		    ((NULL TYPEIN)
		      (EDITSMASH COMS EDITY (CDR COMS]
		  (SETQ EDITX EDITY)
		  (GO BACKUP))
		([AND [CDR (SETQ EDITY (COND
			       (TYPEIN (READLINE EDITRDTBL (LIST EDITX)))
			       ((EQ EDITX (CAR COMS))
				 COMS]
		      (COND
			((NEQ (CAR EDITY)
			      EDITX)                        (* In the call to READLINE above, the user typed 
							    control-U and changed the command himself.)
			  T)
			((AND DWIMFLG (SETQ EDITZ (FIXSPELL EDITX 70 EDITCOMSL (NULL TYPEIN)
							    T)))
                                                            (* E.g. user types MBBD -- without parentheses.)
			  (COND
			    [(LISTP EDITZ)
			      (EDITSMASH EDITY (CAR EDITZ)
					 (CONS (CDR EDITZ)
					       (CDR EDITY]
			    (T (EDITSMASH EDITY EDITZ (CDR EDITY]
		  (AND (NULL TYPEIN)
		       (EDITSMASH COMS (CONS (CAR COMS)
					     (CDR COMS)))
		       (SETQ EDITY (CAR COMS)))
		  (SETQ EDITX EDITY)
		  (EDITSAVE1 EDITX T))
		(T (EDITSAVE1 EDITY T)
		   (ERROR!]
	    ((AND EDITHISTORY (FMEMB (CAR EDITX)
				     HISTORYCOMS))
	      (RETURN (EDITH EDITX)))
	    ((AND EDITUSERFN (SETQ EDITY (EDITUSERFN EDITX)))
	      (RETURN (EDITCOM EDITY TYPEIN)))
	    ((NLISTP EDITX)
	      (ERROR!))
	    ((AND (EQ (CAR EDITX)
		      (QUOTE !))
		  (NULL (CDR EDITX)))
	      (EDITDEFAULT1 (QUOTE (1)))
	      (FRPLACA EDITX 1))
	    ((AND (EQ (CAR EDITX)
		      (QUOTE #))
		  (NULL (CDR EDITX)))
	      (EDITDEFAULT1 (QUOTE (3)))
	      (FRPLACA EDITX 3))
	    [(AND DWIMFLG (ATOM (CAR EDITX))
		  (SETQ EDITY (FIXSPELL (CAR EDITX)
					70 EDITCOMSL (NULL TYPEIN)
					T)))
	      (COND
		[(LISTP EDITY)
		  (EDITSMASH EDITX (CAR EDITY)
			     (CONS (CDR EDITY)
				   (CDR EDITX]
		(T (EDITSMASH EDITX EDITY (CDR EDITX]
	    (T (ERROR!)))
          [RETURN (COND
		    ((EQ REREADFLG (QUOTE ABORT))
		      NIL)
		    (T (EDITCOM (SETQ COM EDITX)
				TYPEIN]
      BACKUP
          (SETQ COM EDITX)
          (COND
	    ((AND EDITHIST TYPEIN (NULL REREADFLG))
	      (FRPLACA EDITHISTORY (CDAR EDITHISTORY))
	      (FRPLACA (CDR EDITHISTORY)
		       (SUB1 (CADR EDITHISTORY)))
	      (EDITSAVE COM)

          (* Can't just smash com onto front of history because now that it has been corrected, EDITSAVE may not actually save
	  it, e.g. suppose COM is a misspelled P.)


	      ))
          (RETURN (EDITCOM COM TYPEIN])

(EDITDEFAULT1
  [LAMBDA (X Y)
    (PRIN1 (QUOTE =)
	   T)
    (COND
      ((STRINGP X)
	(PRIN1 X T))
      (T (PRIN2 X T T)))
    (COND
      (Y (SPACES 1 T)
	 (PRIN2 Y T T)))
    (TERPRI T)
    (LISPXWATCH SPELLSTATS1])

(EDITFNS
  [NLAMBDA X                                                (* DD: " 7-Oct-81 20:56")

          (* FNS is a list (or name of a list) of functions to be edited; (CDR X) are the operations to be performed.)


    (SETQ X (MKLIST X))
												     |
    (MAPC [COND
	    ((LISTP (CAR X))
	      (STKEVAL (QUOTE EDITFNS)
		       (CAR X)
		       NIL
		       (QUOTE INTERNAL)))
	    (T                                              (* If (CAR X) is name of a file, do editfns on its 
							    functions.)
	       (OR (LISTP (EVALV (CAR X)
				 (QUOTE EDITFNS)))
		   (AND (GETPROP (OR (AND DWIMFLG (MISSPELLED? (CAR X)
							       70 FILELST NIL X))
				     (CAR X))
				 (QUOTE FILE))
			(FILEFNSLST (CAR X)))
		   (STKEVAL (QUOTE EDITFNS)
			    (CAR X)
			    (QUOTE INTERNAL]
	  (FUNCTION (LAMBDA (Y)
	      (ERSETQ (APPLY (QUOTE EDITF)
			     (CONS (PROG1 (PRIN2 Y T T)
					  (SPACES 1 T))
				   (CDR X])

(EDITH
  [LAMBDA (C)                      (* wt: 5-APR-77 17 56)
    (PROG (X COMS LINE TEM)
          [SELECTQ C
		   ((DO !E !F !N)
                                   (* USE is used when operator was incorrect, wheras DO is used when operator was 
				   omitted.)
		     [SETQ X (SELECTQ C
				      (!E 
                                   (* !E is equivalent to DO E, !F to DO F, and !N to DO N.)
					  (QUOTE E))
				      (!F (QUOTE F))
				      (!N (QUOTE N))
				      (COND
					((NULL (SETQ LINE (READLINE EDITRDTBL)))
					  (ERROR!))
					(T (CAR LINE]
		     (SETQ COMS (LISPXFIND EDITHISTORY NIL (QUOTE INPUT)))

          (* If COMS is a LINE command, e.g. FIE FUM, DO COMS is the same as (COMS FIE FUM) If COMS is a list command, e.g. 
	  (FIE FUM), same as (COMS (FIE FUM)))


		     [COND
		       ((SETQ TEM (FMEMB HISTSTR0 COMS))
			 (COND
			   ((CDR TEM)
			     (SETQ COM C)
			     (ERROR!))
			   (T      (* removes the last "<c.r.")
			      (SETQ COMS (LDIFF COMS TEM]
		     [SETQ COMS (COND
			 ((OR (EQ X (QUOTE E))
			      (EQ X (QUOTE F)))
                                   (* Always a LINE command)
			   (CONS X COMS))
			 ((CDR COMS)
                                   (* Was a LINE command.)
			   (LIST (CONS X COMS)))
			 (T        (* Was a list command.)
			    (LIST (LIST X (CAR COMS]
		     (HISTORYSAVE EDITHISTORY (QUOTE *)
				  NIL NIL COMS (LIST (QUOTE *HISTORY*)
						     (CONS C LINE)))
		     (SETQ READBUF COMS)
		     (LISPXWATCH P.A.STATS))
		   (UNDO (NCONC (CAAAR EDITHISTORY)
				(SETQ LINE (READLINE EDITRDTBL)))
			 (SETQ COM NIL)
			 (SETQ X NIL)
			 [MAPC (LISPXFIND EDITHISTORY LINE (QUOTE ENTRIES)
					  T)
			       (FUNCTION (LAMBDA (Y)
				   (AND (LISTP (SETQ Y (CADDR Y)))
					(SETQ X T)
					(UNDOEDITCOM Y T]
			 (COND
			   ((NULL X)
			     (PRIN1 (QUOTE "nothing saved.
")
				    T)))
			 (LISPXWATCH P.A.STATS)
			 (RETURN))
		   (BUFS (LISPX C)
                                   (* Restores input buffers. Transparent to history.)
			   (RETURN NIL))
		   (RESETLST (RESETSAVE (SETREADTABLE EDITRDTBL T)
					(LIST (QUOTE SETREADTABLE)
					      (GETREADTABLE T)
					      T))
                                   (* so reading and printing will be done with editreadtable.)
			     (RESETVARS ((LISPXHISTORY EDITHISTORY))
				        (SETQ COM NIL)
				        (RETURN (LISPX C (QUOTE *]

          (* LISPX will set up READBUF. At this point we know C is on the list HISTORYCOMS, so it might be USE, REDO, FIX, 
	  etc. Using LISPX this way means new history commands for LISPX can also be used in the editor simply by adding them 
	  to the list HISTORYCOMS.)


          (AND READBUF (SETQ EDITHIST (CDDAAR EDITHISTORY)))
                                   (* For saving undo information for this command 
				   (s) back in EDITL1.)
          (PROG (EDITHIST)
	    LP  (COND
		  ((NULL (SETQ READBUF (LISPXREADBUF READBUF)))
                                   (* e.g. a REDO N TIMES which just/is about to run out)
		    (RETURN)))
	        (SETQ COM (LISPXREAD T EDITRDTBL))
	        (AND EDITHISTORY (EDITSAVE COM))
	        (EDITCOM COM T)
	        (GO LP])

(EDITRAN
  [LAMBDA (C DEF)
    (SETQ L (OR [PROG ((L L)
		       (L0 L)
		       WORDS C1 TEM)
		      (COND
			([AND (NULL DEF)
			      (NULL (SETQ DEF (CDR (FASSOC (CAR C)
							   EDITOPS]
			  (ERROR!))
			((NULL (SETQ WORDS (CAR DEF)))
			  (GO OUT)))
		      (COND
			([SETQ C1 (SOME C (FUNCTION (LAMBDA (X)
					    (FMEMB X WORDS]
			  (GO OUT))
			([SETQ C1 (SOME C (FUNCTION (LAMBDA (X Y)
					    (SETQ TEM (FIXSPELL X 70 WORDS (NULL TYPEIN)
								Y]
			  (EDITSMASH C1 TEM (CDR C1))
			  (GO OUT))
			(T (ERROR!)))
		  OUT [SETQ TEM (BLKAPPLY (CAR (SETQ DEF (CADR DEF)))
					  (PROG ((#1 (CDR (LDIFF C C1)))
						 (#2 (CAR C1))
						 (#3 (CDR C1)))
					        (RETURN (MAPCAR (CDR DEF)
								(FUNCTION (LAMBDA (X)
								    (COND
								      ((ATOM X)
                                   (* So you don't have to QUOTE atoms.)
									(SELECTQ X
										 (#1 #1)
										 (#2 #2)
										 (#3 #3)
										 X))
								      (T (EVAL X]
		      (RETURN (COND
				([AND TEM (CDR L0)
				      (NOT (MEMB (CAR L0)
						 (CADR L0)))
				      (NOT (TAILP (CAR L0)
						  (CADR L0]
				  TEM)
				(T L0]
		L])

(EDITTO
  [LAMBDA (LC1 LC2 FLG)                                      (* lmm "11-JUL-83 01:35")

          (* Locates LC1 does an UP, and then attempts to do a BI at that level, i.e. LC2 specifies an element in the NTH or
	  BI sense -
	  that expression at this level containing C3.)


    (SETQ L (PROG ((L L))
	          (COND
		    (LC1 (EDLOC LC1)
			 (EDUP)))
	          (SETQ COM LC2)
	          (PROG (COM)
		        (EDIT.BI 1 (COND
				   ((AND (NUMBERP LC1)
					 (NUMBERP LC2)
					 (IGREATERP LC2 LC1))
				     (IPLUS LC2 (IMINUS LC1)
					    1))
				   (T LC2))
				 (CAR L)))
	          [COND
		    ((AND (EQ FLG (QUOTE TO))
			  (CDAAR L))                         (* Does not include endpoint.)
		      (EDIT.RI 1 -2 (CAR L]
	          (EDITCOM 1)

          (* In case segment to be deleted is at beginning of list, this ensures that it is the segment that is deleted, not
	  the list.)


	          (RETURN L)))
    (SETQ TOFLG T])

(EDITXTR
  [LAMBDA (LC X)                                            (* DD: " 7-Oct-81 21:07")
    (PROG (TOFLG)
          (COND
	    ((AND (LISTP LC)
												     |
		  (NEQ (CAR LC)
		       (QUOTE HERE)))
	      (EDLOC LC T)))
          [PROG ([L (LIST (COND
			    ((TAILP (CAR L)
				    (CADR L))               (* Effectively does a 1)
			      (CAAR L))
			    (T (CAR L]
		 UNFIND)
	        (EDLOC X T)
	        (SETQ X (COND
		    ((TAILP (CAR L)
			    (CADR L))
		      (CAAR L))
		    (T (CAR L]
          (EDUP)
          [EDIT2F 1 (COND
		    (TOFLG                                  (* APPEND X for undoing.)
			   (APPEND X))
		    (T (LIST X]
          [AND (NULL TOFLG)
	       (LISTP (CAAR L))
	       (SETQ L (CONS (CAAR L)
			     (COND
			       ((TAILP (CAR L)
				       (CADR L))            (* To remove the extra (annoying) tail caused by the 
							    UP.)
				 (CDR L))
			       (T L]
          (RETURN L])

(EDLOC
  [LAMBDA (EDX FLG)
    (PROG ((OLDL L)
	   (OLDF UNFIND)
	   (LCFLG T)
	   EDL FINDFLAG COMS)
          (COND
	    ((NLISTP EDX)
	      (EDITCOM EDX))
	    ((AND (NULL (CDR EDX))
		  (NLISTP (CAR EDX)))
	      (EDITCOM (CAR EDX)))
	    (T (GO LP)))
          (SETQ UNFIND OLDL)
          (RETURN (CAR L))
      LP  (SETQ EDL L)
          [COND
	    ((NLSETQ (EDITCOMS EDX))
	      (SETQ UNFIND OLDL)
	      (RETURN (CAR L]
          (COND
	    ((OR FLG (EQUAL EDL L))

          (* If command of form (LC FOO (IF --)) this will check whether failure was because there were no more FOO'S or 
	  because of the IF clause. In the latter case, the search continues.)



          (* FLG is T on calls from EDIT:, EDITXTR, EDITMBD, and EDITMV. In this case, the search does not continue, e.g. if 
	  user says (MOVE COND 3 TO AFTER --) and the next COND does not have a third clause, the MOVE fails.
	  Of course, the user can always type (MOVE (LC COND 3) TO AFTER --) if he intends to search for a COND containing 
	  three elements.)


	      (SETQ L OLDL)
	      (SETQ UNFIND OLDF)
	      (ERROR!)))
          (GO LP])

(EDLOCL
  [LAMBDA (COMS)
    (CAR (SETQ L (NCONC (PROG [(L (LIST (CAR L]
			      (EDLOC COMS T)
			      (RETURN L))
			(CDR L])

(EDOR
  [LAMBDA (COMS)                   (* lmm "22-NOV-82 00:09")
    (PROG NIL
      LP  [COND
	    ((NULL COMS)
	      (ERROR!))
	    ([ERSETQ (SETQ L (PROG ((L L))
			           (EDITCOMS (CAR COMS))
			           (RETURN L]
	      (RETURN (CAR L]
          (SETQ COMS (CDR COMS))
          (GO LP])

(EDRPT
  [LAMBDA (EDRX QUIET)             (* wt: "14-NOV-78 02:03")
    (PROG ((EDRL L)
	   (EDRPTCNT 0)
	   (COPYFLG T))
      LP  (COND
	    ((AND MAXLOOP (IGREATERP EDRPTCNT MAXLOOP))
	      (PRIN1 (QUOTE "maxloop exceeded.
")
		     T))
	    ((NLSETQ (RESETVARS ((MAXLOOP MAXLOOP))
			        (EDITCOMS EDRX)))
	      (SETQ EDRL L)
	      (SETQ EDRPTCNT (ADD1 EDRPTCNT))
	      (GO LP))
	    ((NULL QUIET)
	      (PRIN1 EDRPTCNT T)
	      (PRIN1 (QUOTE " occurrences.
")
		     T)))
          (SETQ L EDRL)            (* L is left as of last successful completion of loop.)
          (RETURN])

(EDUP
  [LAMBDA NIL                      (* Always equivalent to a 0 followed by an appropriate NTH.)
    (PROG (C-EXP L1 X)
          (SETQ C-EXP (CAR L))
          (COND
	    ((NULL (SETQ L1 (CDR L)))
	      (SETQQ COM (ERROR: . "can't - at top.
"))
	      (ERROR!))
	    ((TAILP C-EXP (CAR L1))
                                   (* Already UP.)
	      (RETURN))
	    ((AND (EQ C-EXP (CAR LASTAIL))
		  (TAILP LASTAIL (CAR L1)))
	      (SETQ X LASTAIL))
	    ([NOT (SETQ X (MEMB C-EXP (CAR L1]
	      (ERROR!))
	    ((MEMB C-EXP (CDR X))
	      (PRIN2 C-EXP T T)
	      (PRIN1 (QUOTE " - location uncertain.
")
		     T)
	      (ERROR!)))
          [COND
	    ([OR (EQ X (CAR L1))
		 (AND (EQ (CAAR L1)
			  CLISPTRANFLG)
		      (EQ X (CDDAR L1]

          (* Since (NTH 1) is now a nop, to insure that 0 always does something, this check is to take care of 1 followed by 
	  UP.)


	      (SETQ L L1))
	    (T (SETQ L (CONS X L1]
          (RETURN])

(ESUBST
  [LAMBDA (NEW OLD EXPR ERRORFLG CHARFLG)
                                   (* wt: "16-FEB-79 13:08")

          (* Does a /DSUBST a la R command in editor. Thus gives an error if Y not found in Z, and also allows you to specify 
	  X and Y using alt-modes, or patterns. note that order of arguments is that of SUBST and DSUBST, not R, i.e. Y'S 
	  become X'S.)


    (PROG ([L (LIST (SETQ EXPR (LIST EXPR]
	   ATM COM UNFIND LASTAIL UNDOLST1 EDITCHANGES)
          (COND
	    ((NLSETQ (EDIT4F OLD NEW T CHARFLG))
	      (AND LISPXHIST (UNDOSAVE (LIST (FUNCTION ESUBST1)
					     UNDOLST1)
				       LISPXHIST))
	      (RETURN (CAR EXPR)))
	    (ERRORFLG (ERROR OLD (QUOTE " ?")
			     T)))
          (ERROR!])

(ESUBST1
  [LAMBDA (X)                      (* Undoes an ESUBST.)
    (MAPC X (FUNCTION (LAMBDA (X)
	      (COND
		((LISTP (CAR X))
		  (/RPLNODE (CAR X)
			    (CADR X)
			    (CDDR X)))
		((EQ (CAR X)
		     (QUOTE LISPXHIST))
                                   (* This is the way the editor marks an undo entry involving something other than 
				   a /rplnode, e.g. a /puthash.)
		  (ESUBST1 (CDR X)))
		(T (APPLY (CAR X)
			  (CDR X])

(EDITF
  [NLAMBDA EDITFX                                            (* lmm " 2-Sep-85 18:45")
    (SETQ EDITFX (NLAMBDA.ARGS EDITFX))
    (EDITDEF (if EDITFX
		 then (PROGN (HASDEF (CAR EDITFX)
				     (QUOTE FNS)
				     (QUOTE ?)
				     EDITFX)
			     (CAR EDITFX))
	       else (PROGN (PRIN1 "Editing " T)
			   (PRINT LASTWORD T)))
	     (QUOTE FNS)
	     NIL
	     (CDR EDITFX])

(EDIT
  [LAMBDA (NAME OPTIONS)                                     (* lmm "12-Aug-85 09:00")
    (PROG ([FROMDISPLAY (OR (EQ OPTIONS T)
			    (EQMEMB OPTIONS (QUOTE DISPLAY]
	   (TYPES (OR (for X inside OPTIONS when (NEQ X T) bind TYPE when (SETQ TYPE
									    (GETFILEPKGTYPE
									      X
									      (QUOTE TYPES)
									      T NAME))
			 collect TYPE)
		      (for TYPE in [APPEND (QUOTE (FNS MACROS VARS RECORDS))
					   (LDIFFERENCE FILEPKGTYPES (QUOTE (FNS MACROS VARS RECORDS]
			 when (AND (LITATOM TYPE)
				   (HASDEF NAME TYPE NIL))
			 collect TYPE)))
	   TYPE)
          [for X on (GETPROPLIST NAME) by (CDDR X) bind PROPTYPES OTHERPROP
	     do (LET [(PROPTYPE (GETPROP (CAR X)
					 (QUOTE PROPTYPE]
		     (if (AND PROPTYPE (NEQ PROPTYPE (QUOTE IGNORE)))
			 then (pushnew PROPTYPES PROPTYPE)
		       else (SETQ OTHERPROP T)))
	     finally (if OTHERPROP
			 then (SETQ TYPES (CONS (QUOTE PROPLST)
						(LDIFFERENCE TYPES PROPTYPES)))
		       else (SETQ TYPES (UNION TYPES PROPTYPES]
          (OR (FMEMB (QUOTE FNS)
		     TYPES)
	      (NOT (GETD NAME))
	      (push TYPES (QUOTE FNS)))
          (SETQ TYPE (if (CDR TYPES)
			 then (if FROMDISPLAY
				  then (OR (MENU (create MENU
							 ITEMS ← TYPES
							 TITLE ← (CONCAT "Edit which definition of " 
									 NAME)))
					   (RETURN))
				else (ASKUSER NIL (CAR TYPES)
					      (LIST "Edit which " TYPES " definition of " NAME)
					      TYPES))
		       else (PRINTOUT (if FROMDISPLAY
					  then PROMPTWINDOW
					else T)
				      "Editing "
				      (CAR TYPES)
				      " definition of " NAME T)
			    (CAR TYPES)))
          (if (EQ TYPE (QUOTE PROPLST))
	      then (EDITE (GETPROPLIST NAME)
			  NIL NAME (QUOTE PROPLST))
	    else (RETURN (EDITDEF NAME TYPE])

(EDITFERROR
  [LAMBDA (FN FLG)                                           (* lmm " 4-Aug-85 01:35")
                                                             (* called when EDITF fails to find a function.
							     FLG is the error message argument -
							     different than EDITDEF)
    [if (HASDEF FN (QUOTE MACROS))
	then (PRINTOUT T "Editing macro definition for " FN T)
	     (EDITDEF FN (QUOTE MACROS)
		      (QUOTE CURRENT)
		      (if (BOUNDP (QUOTE EDITCOMS))
			  then EDITCOMS))
      elseif [AND (STRINGP FLG)
		  (OR (\DEFINEDP FN)
		      (NOT (EQ (QUOTE Y)
			       (ASKUSER DWIMWAIT (QUOTE N)
					(CONCAT "No FNS defn for " FN 
						". Do you wish to edit a dummy definition?"]
	then (ERROR FN FLG T)
      else (PUTDEF FN (QUOTE FNS)
		   (EDITE (COPY DUMMY-EDIT-FUNCTION-BODY)
			  NIL FN (QUOTE FNS]
    (AND (GETD FN)
	 (if (STRINGP FLG)
	     then (RETFROM (QUOTE EDITF)
			   FN)
	   else FN])

(EDITFA
  [LAMBDA (TYPE DEF)                                        (* wt: " 8-OCT-78 22:24")
												     |
    (PRIN1 (QUOTE "Note: you are editing a")
												     |
	   T)
												     |
    (AND (EQ TYPE (QUOTE ADVISED))
												     |
	 (PRIN1 (QUOTE n)
												     |
		T))
												     |
    (SPACES 1 T)
												     |
    (PRIN2 TYPE T T)
												     |
    (PRIN1 (COND
												     |
	     ((EXPRP DEF)
												     |
	       (QUOTE " definition."))
												     |
	     ((SUBRP DEF)
												     |
	       (QUOTE " subr!"))
												     |
	     (T (QUOTE " compiled function!")))
												     |
	   T)
												     |
    (TERPRI T])

(EDITFB
  [LAMBDA (FN)                                               (* lmm "28-Sep-84 18:56")
    (PROG [FL TEM [EDITLOADFN (OR (EQ EDITLOADFNSFLG T)
				  (CAR (LISTP EDITLOADFNSFLG]
	      (EDITLOADBLOCK (OR (EQ EDITLOADFNSFLG T)
				 (CDR (LISTP EDITLOADFNSFLG]

          (* EDITLOADFNFLG is really a dotted pair of two flags. CAR governs loading of the function, with NIL meaning ask, T 
	  dont ask (and do it). CDR governs loading rest of the block, with NIL meaning ask, T dont ask and do it, anything 
	  else dont ask and dont do it. Note that if EDITLOADFNSFLG is an atom, effect is same as though list of that atom, 
	  i.e. will ask about blocks)


          [OR (SETQ FL (EDITLOADFNS? FN (AND (NULL EDITLOADFN)
					     (QUOTE "not editable, shall I load it from"))
				     (NULL EDITLOADFN)))
	      (AND (EQ (NARGS (QUOTE WHEREIS))
		       4)
		   (COND
		     ((SETQ FL (EDITLOADFNS? FN (QUOTE "not editable, shall I LOADFROM")
					     T T))
		       (LOADFROM FL))
		     (T 

          (* i.e. user can be asked whether to loadfrom the file, if not mentioned before, but ifhe says no, he still has 
	  option ofhaving just the functio loaded)


			(SETQ FL (EDITLOADFNS? FN (AND (NULL EDITLOADFN)
						       (QUOTE "not editable, shall I load it from"))
					       (NULL EDITLOADFN)
					       T]
          [COND
	    ((NULL FL)
	      (RETURN NIL))
	    ([CDR (SETQ TEM (SUBSET (GETBLOCKDEC FN FL T)
				    (FUNCTION (LAMBDA (FN)
					(NOT (EXPRP (VIRGINFN FN]
	      (AND [NULL (COND
			   ((NULL EDITLOADBLOCK)
			     (EQ (ASKUSER DWIMWAIT (QUOTE Y)
					  (LIST (QUOTE "load the rest of the functions")
						(LIST (SUB1 (LENGTH TEM)))
						(QUOTE "in its block"))
					  NIL T)
				 (QUOTE Y)))
			   (T (EQ EDITLOADBLOCK T]
		   (SETQ TEM NIL]
          (LOADFNS (OR TEM FN)
		   FL
		   (QUOTE PROP))
          (COND
	    ((GETPROP FN (QUOTE EXPR))
	      (RETURN T)))
          (ERROR FN (QUOTE "not found."])

(EDITLOADFNS?
  [LAMBDA (FN STR ASKFLG FILES)                              (* lmm "28-Sep-84 18:50")

          (* Value is name of file from which function or functions can be loaded. If STR is non-NIL, user is asked to 
	  approve, and STR used in the message. EDITLOADFNS? is also used by prettyprint)


    (AND FN FILEPKGFLG (PROG ((LST (WHEREIS FN (QUOTE FNS)
					    FILES))
			      FILE DATES FD)
			     (OR (COND
				   ((EQ FILES T)

          (* if FILES = T, means conult data base. if user has removed a function from one of those files, as evidenced by the
	  fact that editloafns? was called with files=T, then dont offer that file.)


				     (SETQ LST (LDIFFERENCE LST FILELST)))
				   (T LST))
				 (RETURN))
			     [SETQ FILE (COND
				 ((CDR LST)
				   (PRIN2 FN T)
				   (MAPRINT LST T " is contained on " "
" " and ")
				   (OR (ASKUSER NIL NIL "indicate which file to use: " (MAKEKEYLST
						  LST)
						T)
				       (RETURN)))
				 (T (CAR LST]
			     [SETQ DATES (LISTP (GETPROP FILE (QUOTE FILEDATES]

          (* * only look at file in FILEDATES if the file has been LOADed or LOADFROMd)


			     (SETQ FILE (OR (AND DATES (FMEMB (CDAR (GETPROP FILE (QUOTE FILE)))
							      (QUOTE (LOADFNS T)))
						 (INFILEP (CDAR DATES)))
					    (FINDFILE FILE T)
					    (RETURN)))
			     [COND
			       ((AND DATES (NEQ FILE (CDAR DATES)))
                                                             (* found a different file than in FILEDATES)
				 (COND
				   ((EQUAL (CAAR DATES)
					   (SETQ FD (FILEDATE FILE)))
                                                             (* found a goood version of file on a different name.
							     smash name)
				     (/RPLACD (CAR DATES)
					      FILE))
				   (T (printout T "*** note: " (CDAR DATES)
						" dated "
						(CAAR DATES)
						"isn't current version; " FILE " dated " FD " is." T]
			     (COND
			       ((STREQUAL STR ""))
			       ((NULL ASKFLG)
				 (if STR
				     then (LISPXPRIN1 STR T)
				   else (LISPXPRIN1 "loading definition of " T)
					(LISPXPRIN2 FN T)
					(LISPXPRIN1 " from " T))
				 (LISPXPRINT FILE T T))
			       ((NEQ (ASKUSER DWIMWAIT (QUOTE Y)
					      (LIST FN STR FILE)
					      NIL T)
				     (QUOTE Y))
				 (RETURN)))
			     (RETURN FILE])

(EDITE
  [LAMBDA (EXPR COMS ATM TYPE IFCHANGEDFN)                   (* lmm " 5-Jul-85 10:44")

          (* Used by both EDITF and EDITV. Calls EDITL in such a way that if a change occurs, and EDITL is exited via OK, 
	  STOP, or even conrol-D, the appropriate call to NEWFILE? is executed. Since it checks to see if a change has been 
	  made, it also does the UNSAVEDEFING for EDITF in he case that we are editing a PROP. Value is the edited expression 
	  or generates an error.)


    (RESETLST (PROG ((ECHOFILE (SELECTQ (SYSTEMTYPE)
					(D (TTYINFOSTREAM))
					T))
		     EDITCHANGES TEM)
		    (COND
		      ((NLISTP EXPR)
			(ERROR EXPR (QUOTE "not editable.")
			       T)))
		    [AND ATM (RESETSAVE NIL (CONS (QUOTE EDITF2)
						  (SETQ EDITCHANGES (LIST ATM NIL TYPE IFCHANGEDFN 
									  EXPR]
		    (PREEDITFN ATM TYPE EDITCHANGES)         (* extensions to handle editing property lists, vars 
							     etc.)
		    [ERSETQ (SETQ TEM (COND
				((SETQ EXPR (LAST (EDITL (LIST EXPR)
							 COMS ATM NIL EDITCHANGES)))
				  (CAR EXPR))
				(T (HELP "EDITL returned NIL"]
		    (COND
		      ((CADR EDITCHANGES)                    (* A change was made.)
			(COND
			  ((NULL TEM)
			    (ERROR!)))
			(SELECTQ TYPE
				 (FNS (/PUTD ATM TEM))
				 [PROP (COND
					 ((OR (EQ DFNFLG (QUOTE PROP))
					      (EQ DFNFLG (QUOTE ALLPROP)))
					   (PRIN1 (QUOTE "changed, but NOT unsaved
")
						  ECHOFILE T))
					 (T (UNSAVEDEF ATM)
					    (PRINT (QUOTE unsaved)
						   ECHOFILE T)
					    (/PUTD ATM TEM)
					    (AND EDITUNSAVEBLOCKFLG (UNSAVEBLOCK? ATM]
				 (VARS (SAVESET ATM TEM NIL (QUOTE NOSAVE)))
				 (PROPLST (/SETPROPLIST ATM TEM))
				 NIL))
		      ((NULL TEM)
			(ERROR!))
		      ((EQ TYPE (QUOTE PROP))
			(PRIN1 (QUOTE "not changed, so not unsaved
")
			       ECHOFILE T)))
		    (COND
		      ((AND TYPE ATM ADDSPELLFLG)
			(ADDSPELL ATM (SELECTQ TYPE
					       ((FNS PROP)
						 NIL)
					       (VARS T)
					       (PROPLST 0)
					       0))

          (* TYPE is FNS or PROP for calls from EDITF, VARS for calls from EDITV, and PROPLST for calls fromEDITP.
	  TYPE CAN ALSO BE A PRETTYTYPE. can also be the name of a CHANGEDLST in the case of a direct call from the user.)


			))
		    (RETURN TEM])

(EDITELT
  [LAMBDA (LC L)
    (PROG (Y)
          (EDLOC LC)
      LP  (SETQ Y L)
          (COND
	    ((CDR (SETQ L (CDR L)))
	      (GO LP)))
          (RETURN (CAR Y])

(UNSAVEBLOCK?
  [LAMBDA (FN)                                              (* wt: "27-APR-79 23:40")
    (PROG (ENTRIES)
          [MAPC FILELST
		(FUNCTION (LAMBDA (FILE)
		    (MAPC (FILECOMSLST FILE (QUOTE BLOCKS))
			  (FUNCTION (LAMBDA (BLOCK)
			      (AND (CAR BLOCK)
				   (FMEMB FN (CDR BLOCK))
				   (MAPC (OR (CDR (FASSOC (QUOTE ENTRIES)
							  BLOCK))
					     (LIST (CAR BLOCK)))
					 (FUNCTION (LAMBDA (X)
					     (COND
					       ((AND (NOT (EXPRP (OR (GETPROP X (QUOTE BROKEN))
								     (GETPROP X (QUOTE ADVISED))
								     X)))
						     (NOT (FMEMB X ENTRIES)))
						 (SETQ ENTRIES (NCONC1 ENTRIES X]
          (COND
	    (ENTRIES (MAPRINT ENTRIES T "unsave/load the definitions of the (other) entries: " " ? " 
			      ", ")
		     (COND
		       ((EQ (QUOTE Y)
			    (ASKUSER DWIMWAIT (QUOTE N)
												     |
				     NIL NIL T))
			 (MAPC ENTRIES (FUNCTION LOADDEF])

(EDITF1
  [LAMBDA (EXPR COMS ATM TYPE IFCHANGEDFN)                  (* wt: " 8-OCT-78 19:39")
												     |
    (PRIN1 "EDITF1 has been replaced by EDITE" T)
												     |
    (EDITE EXPR COMS ATM TYPE IFCHANGEDFN])

(EDITF2
  [NLAMBDA (ATM CHANGES TYPE IFCHANGEDFN EXPR)               (* lmm " 4-Jul-85 16:39")
    (AND CHANGES TYPE (PROG ((LISPXHIST (SELECTQ RESETSTATE
						 ((RESET HARDRESET)
						   NIL)
						 LISPXHIST)))
			    (SELECTQ TYPE
				     ((PROP FNS)
				       (FIXEDITDATE EXPR))
				     NIL)
			    (COND
			      (IFCHANGEDFN (APPLY* IFCHANGEDFN ATM EXPR TYPE (NULL RESETSTATE)))
			      (T (SELECTQ TYPE
					  (PROPLST NIL)
					  (PROP (MARKASCHANGED ATM (QUOTE FNS)))
					  (MARKASCHANGED ATM TYPE])

(EDITV
  [NLAMBDA EDITVX                                            (* lmm " 2-Sep-85 13:17")
    (SETQ EDITVX (NLAMBDA.ARGS EDITVX))
    (LET* [[VAR (OR (CAR EDITVX)
		    (PROGN (PRIN1 "= " T)
			   (PRINT LASTWORD T]
	   (FRAME (AND VAR (STKSCAN VAR]
          (if FRAME
	      then (EDITE (ENVEVAL VAR FRAME NIL T)
			  (CDR EDITVX)
			  VAR)
	    elseif (SETQ VAR (HASDEF VAR (QUOTE VARS)
				     (QUOTE CURRENT)
				     T))
	      then (EDITDEF VAR (QUOTE VARS)
			    (QUOTE CURRENT)
			    (CDR EDITVX))
	    else (ERROR VAR "not editable"])

(EDITP
  [NLAMBDA EDITPX                                            (* lmm "10-Jun-85 17:12")
    (SETQ EDITPX (NLAMBDA.ARGS EDITPX))
    (PROG ((ATM (CAR EDITPX)))
          [COND
	    ((AND DWIMFLG (NLISTP (GETPROPLIST ATM)))
	      (SETQ ATM (OR (MISSPELLED? ATM 75 USERWORDS NIL NIL (FUNCTION GETPROPLIST))
			    ATM]
          (EDITE (GETPROPLIST ATM)
		 (CDR EDITPX)
		 ATM
		 (QUOTE PROPLST))
          (RETURN ATM])

(EDITL
  [LAMBDA (L COMS ATM MESS EDITCHANGES)
                                   (* DD: "20-Oct-81 14:02")
                                   (* Takes edit push-down list L as argument.
				   Returns L as value.)
    (COND
      ((NLISTP L)
	L)
      (T (PROG (LASTAIL MARKLST UNDOLST UNDOLST0 UNDOLST1 UNFIND LASTP1 LASTP2 TEM1 TEM2 EDITHIST0 
			EDITIME0 EDITLISPFLG)
                                   (* EDITCHANGES is a cell used for destructivelymarking whether the edit has 
				   caused any changes.)
	       (COND
		 ((EQ (CAR (LISTP COMS))
		      (QUOTE START))
		   (SETQ READBUF (CDR COMS))
		   (SETQ COMS NIL)))
	       [COND
		 ((AND ATM (NULL COMS)
		       EDITHISTORY)
		   (SETQ EDITHIST0 T)
		   (LISPXWATCH EDITCALLS)
		   (SETQ EDITIME0 (CLOCK 0]
	       (SETQ TEM2 (CAR (LAST L)))

          (* TEM2 is the top level xpression. NOte that L is usually a list of only one element, i.e. you usually start 
	  editing atthe top, but not necessarily, since editl can be called dirctly.)


	       [COND
		 ([OR [EQ TEM2 (CAR (LAST (CAR (SETQ TEM1 (GETPROP (QUOTE EDIT)
								   (QUOTE LASTVALUE]
		      [AND ATM (EQ TEM2 (CAR (LAST (CAR (SETQ TEM1 (GETPROP ATM (QUOTE EDIT-SAVE]
		      (SOME (CAR LISPXHISTORY)
			    (FUNCTION (LAMBDA (X)
				(EQ TEM2 (CAR (LAST (CAR (SETQ TEM1 (CADR (FMEMB (QUOTE EDIT)
										 X]

          (* First clause is old method of always saving last call on editor property list. Second clause searches history 
	  list for a call to editor corresponding to this expression.)


		   (AND (NULL (CDR L))
			(SETQ L (CAR TEM1)))
                                   (* if editor was called with an edit chain specified, rather just list of the 
				   xpression, use this chain.)
		   (SETQ MARKLST (CADR TEM1))
		   (SETQ UNDOLST (CADDR TEM1))
		   [COND
		     ((CAR UNDOLST)
                                   (* Don't want to block it twice.)
		       (SETQ UNDOLST (CONS NIL UNDOLST]
		   (SETQ UNDOLST0 UNDOLST)
                                   (* Marks UNDOLST as of this entry to editor, so UNDO of this entire EDIT session 
				   won't go too far back.)
		   (SETQ UNFIND (CDDDR TEM1]
	       (COND
		 ([PROG1 (NLSETQ (SETQ L (EDITL0 L COMS MESS T)))
			 [COND
			   (UNDOLST1 (SETQ UNDOLST (CONS (CONS T (CONS L UNDOLST1))
							 UNDOLST]
			 (COND
			   ((NEQ UNDOLST UNDOLST0)
			     (AND LISPXHIST (UNDOSAVE (LIST (QUOTE UNDOEDITL)
							    L UNDOLST UNDOLST0)
						      LISPXHIST))
                                   (* Takes care of making the entire call to EDITL undoable.)
			     ))
			 (COND
			   (EDITIME0 (SETATOMVAL (QUOTE EDITIME)
						 (IPLUS EDITIME (IDIFFERENCE (CLOCK 0)
									     EDITIME0]

          (* If one of COMS causes an error, or if call to session is terminated by a STOP, still want to move undo 
	  information to LISPXHISTORY.)


		   (RETURN L))
		 (T (ERROR!])

(EDITL0
  [LAMBDA (L COMS MESS EDITLFLG)                             (* lmm " 5-Jul-85 10:46")

          (* EDITL0 should only be called while under an EDITL since the global states of the edit, e.g. UNFIND, LASTP1, 
	  UNDOLST, etc. are all bound in EDITL. Note that individual calls to EDITL0 are not undoable, i.e. any changes that 
	  are made are stored on UNDOLST or UNDOLST1, not on LISPXHISTORY. Only for calls to EDITL are the changes transfered 
	  to LISPXHISTORY. Note also that when COMS are specified, all structure changes are saved on UNDOLST1.
	  When the editor is used on-line, structure changes for each command are saved on UNDOLST1 and at the end of each 
	  command, gathered up and stored on UNDOLST.)


    (PROG (FINDFLAG LCFLG TOFLG EDITHIST L0 COM0 COM COPYFLG ORIGFLG (LISPXID (QUOTE *)))
          (COND
	    (COMS (SETQ COPYFLG T)
		  (EDITCOMS COMS)
		  (RETURN L)))
          (AND (NEQ (POSITION T)
		    0)
	       (TERPRI T))
          (PRINT (OR MESS (QUOTE edit))
		 T T)
      LP  (EDITL1)                                           (* Only way to exit is via EDITEXIT which does a 
							     RETFROM.)
          (SETQ LISPXBUFS (OR (CLBUFS T)
			      LISPXBUFS))                    (* User control-e'd out of read, CLEARBUF has already 
							     been done.)
          (GO LP])

(EDITL1
  [LAMBDA (UNDOLST1 EDITHIST)                                (* lmm "27-Jun-85 18:20")
    (ERSETQ (RESETVARS ((USERHANDLE (QUOTE EDITL1)))

          (* USERHANDLE mars the last place the user typed somthing to start "computaton" started, so that if somebody wants 
	  to save state and RETTO to continue computing until some condition resumes the saved state, this is the place.
	  (If the edidtor were written to call userexec and let lispx pass the edit commands to a lispxuserfn, then this 
	  wouldnt be necessary. editl1 plays the role of to editl0 that lispx plays to evalqt) Thus UNDOLST1 and EDITHIST 
	  which are the only variabes associated with each event, need to be rebound below EDITL!. They are rebound as 
	  arguments, even though they aret used that way, rather than puting them in as prog variabes to save making an extra 
	  frame.)


		   CT  (SETQ FINDFLAG NIL)
		   A   (SETQ EDITHIST NIL)
		       (SETQ UNDOLST1 NIL)
		       (FRESHLINE T)                         (* Holds any changes from execution of this command.)
		       (PROMPTCHAR (QUOTE *)
				   NIL EDITHISTORY)
		       (SETQ COM (LISPXREAD T EDITRDTBL))
		       (SETQ L0 L)                           (* Marks L as of beginning of this command.
							     Used by UNDO.)
		       [SETQ COM0 (COND
			   ((NLISTP COM)
			     COM)
			   (T (CAR COM]                      (* Saves command name. Needed for storing on UNDOLST 
							     below.)

          (* Saves current L and command name for UNDOLST. Command name may be changed during execution to enable better error
	  diagnostics, e.g. on any find commands inside of a complicated operation.)


		       (AND EDITHISTORY (EDITSAVE COM))
		       (COND
			 ([PROG1 (XNLSETQ (EDITCOM COM T)
					  T STOP)
				 [COND
				   (UNDOLST1 (SETQ UNDOLST1 (CONS COM0 (CONS L0 UNDOLST1)))
					     (SETQ UNDOLST (CONS UNDOLST1 UNDOLST]
				 (COND
				   (EDITHIST                 (* Set in EDITSAVE.)
					     (FRPLACA EDITHIST UNDOLST1)
					     (COND
					       (EDITHIST0 (LISPXPUT (QUOTE *FIRSTPRINT*)
								    (LIST (QUOTE EDITL2)
									  ATM T)
								    NIL EDITHIST)
							  (SETQ EDITHIST0 NIL]
			   (GO A)))
		       (TERPRI T)
		       (SETQ LISPXBUFS (OR (CLBUFS)
					   LISPXBUFS))
		       [COND
			 (COM                                (* If COM is NIL, message has already been printed.)
			      (COND
				((EQ (CAR (LISTP COM))
				     (QUOTE ERROR:))
				  (PRIN1 (CDR COM)
					 T))
				(T (PRIN2 COM T T)
				   (PRIN1 (QUOTE "  ?
")
					  T)))
			      (AND EDITHIST (LISPXPUT (QUOTE *ERROR*)
						      COM NIL EDITHIST]
		       (GO CT])

(EDITL2
  [LAMBDA (FILE ATM FLG)                                    (* wt: 14-MAY-76 19 1)
                                                            (* used for printing edit histry list)
    (LISPXPRIN1 (COND
		  (FLG "{started ")
		  (T "{finished "))
		FILE)
    (LISPXPRIN2 ATM FILE)
    (LISPXPRIN1 "}
" FILE])

(UNDOEDITL
  [LAMBDA (L ULST ULST0)
    (PROG (UNDOLST1 COM EDITCHANGES)
          [MAP ULST [FUNCTION (LAMBDA (X)
		   (AND (CAR X)
			(UNDOEDITCOM (CAR X]
	       (FUNCTION (LAMBDA (X)
		   (COND
		     ((NEQ (SETQ X (CDR X))
			   ULST0)
		       X]
          (COND
	    ((NULL UNDOLST1)
	      (PRINT (QUOTE (UNDOEDITL - SHOW WT))
		     T T)))
          (EDITSMASH ULST (CAR ULST0)
		     (CDR ULST0))
          (AND LISPXHIST (UNDOSAVE [LIST (QUOTE UNDOEDITL)
					 L
					 (LIST (CONS T (CONS L UNDOLST1]
				   LISPXHIST])

(EDITCOM
  [LAMBDA (C TYPEIN)               (* wt: "25-APR-78 11:54")
    (SETQ COM C)                   (* In case there is an error, user will see what command was being executed.)
    (SELECTQ EDITRACEFN
	     (NIL)
	     ((TRACE BREAK)
	       (PRIN1 (QUOTE "COM = ")
		      T)
	       (BPNT0 C T 1 10)
	       (PRIN1 (QUOTE "C-EXP = ")
		      T)
	       (BPNT0 (CAR L)
		      T 1 10 (CADR L))
	       [COND
		 ((EQ EDITRACEFN (QUOTE BREAK))
		   (APPLY (QUOTE BREAK1)
			  (LIST NIL T C]
	       (TERPRI T))
	     (EDITRACEFN C))
    (COND
      [FINDFLAG (COND
		  ((EQ FINDFLAG (QUOTE BF))
		    (SETQ FINDFLAG NIL)
		    (EDITBF C))
		  (T (SETQ FINDFLAG NIL)
		     (EDITQF C]
      ((NUMBERP C)
	(SETQ L (EDIT1F C L)))
      ((ATOM C)
	(EDITCOMA C (NULL TYPEIN)))
      ((LISTP C)
	(EDITCOML C (NULL TYPEIN)))
      (T (EDITDEFAULT C)))
    (CAR L])

(EDITCOMA
  [LAMBDA (C COPYFLG)                                        (* lmm " 1-Jul-85 23:42")
    (PROG (TEM TEM1)                                         (* Interprets atomic commands.)
          (RETURN (COND
		    [[AND (NULL ORIGFLG)
			  (OR (SETQ TEM (CDR (EDITMAC C USERMACROS)))
			      (SETQ TEM (CDR (EDITMAC C EDITMACROS]
		      (PROG ((COPYFLG T))
			    (RETURN (EDITCOMS TEM]
		    (T (SELECTQ C
				(NIL                         (* Nop.)
				     NIL)
				((OK STOP SAVE)
				  [COND
				    (UNDOLST1 (SETQ UNDOLST (CONS (SETQ UNDOLST1
								    (CONS COM0 (CONS L0 UNDOLST1)))
								  UNDOLST))
					      (COND
						(EDITHIST (FRPLACA EDITHIST UNDOLST1]
				  [COND
				    ((AND EDITCHANGES (CADR EDITCHANGES)
					  (OR (NULL EDITLFLG)
					      (EQ EDITLFLG T)))

          (* a call to the editor completed, and exprssion was marked as being changed. check to make sure that it isnt the 
	  case thatall the changes were undone, and if so, mark it not changed.)


				      (PROG ((LST UNDOLST))
                                                             (* looks on undolst and sees if there really were any 
							     changes made this time, e.g. they might have been 
							     undon)
					LP  (COND
					      ((OR (NULL LST)
						   (NULL (CAR LST)))
						(FRPLACA (CDR EDITCHANGES)
							 NIL))
					      ((SELECTQ (CAAR LST)
							((UNDO !UNDO NIL)
							  T)
							NIL)
						(SETQ LST (CDR LST))
						(GO LP]
				  (SELECTQ C
					   (OK [COND
						 ((OR (NULL EDITLFLG)
						      (EQ EDITLFLG T))
						   (AND (LITATOM ATM)
							(REMPROP ATM (QUOTE EDIT-SAVE)))
						   [PUTPROP (QUOTE EDIT)
							    (QUOTE LASTVALUE)
							    (SETQ TEM (CONS (LAST L)
									    (CONS MARKLST
										  (CONS UNDOLST L]
						   [COND
						     (LISPXHIST (NCONC LISPXHIST (LIST (QUOTE EDIT)
										       TEM]
						   (COND
						     ((AND EDITHIST ATM)
						       (LISPXPUT (QUOTE *PRINT*)
								 (LIST (QUOTE EDITL2)
								       ATM)
								 NIL EDITHIST]
					       (RETFROM (QUOTE EDITL0)
							L T))
					   (STOP             (* Aborts edit session. However all changes will have 
							     been saved for undoing on UNDOLST and/or UNDOLST1.)
						 (RETEVAL (QUOTE EDITL0)
							  (QUOTE (ERROR!))
							  T))
					   (SAVE             (* Exit and save.)
						 [COND
						   ((NEQ EDITLFLG T)
						     (ERROR (QUOTE "not legal under tty:")
							    (QUOTE "")
							    T))
						   (ATM (PUTPROP (QUOTE EDIT)
								 (QUOTE LASTVALUE)
								 (PUTPROP ATM (QUOTE EDIT-SAVE)
									  (CONS L
										(CONS MARKLST
										      (CONS UNDOLST 
											   UNFIND]
						 (RETFROM (QUOTE EDITL0)
							  L T))
					   (SHOULDNT)))
				[TTY: (SETQ COM COM0)        (* So that COM0 will be printed if TTY: is aborted via 
							     stop.)
				      (COND
					((SETQ TEM1 (PROG (UNDOLST1 UNDOLST)
                                                             (* UNDOLST1 must be protected since there may have been
							     some changes executed in this command before the TTY: 
							     was reached.)
						          [SETQ TEM (NLSETQ (EDITL0 L NIL
										    (QUOTE tty:)
										    (QUOTE tty:]
						          (RETURN UNDOLST)
                                                             (* UNDOLST1 will be NIL because TTY: can only be exited
							     by typing in a STOP or OK.)
						      ))
					  (SETQ UNDOLST1 (CONS (CONS (QUOTE GROUPED)
								     TEM1)
							       UNDOLST1))

          (* Note that once the TTY: command has completed operation, all of the changes executed under it are grouped 
	  together as being changes of the TTY: command.)


					  ))
				      (COND
					(TEM (SETQ L (CAR TEM)))
					([EVALV (QUOTE COMS)
						(SETQ TEM (STKPOS (QUOTE EDITL0]

          (* If COMS is not NIL, the editor is being used as subroutine, e.g. (BREAKIN -- (AFTER TTY:)). In this case, want to
	  abort the entire call to EDITL0.)


					  (RETEVAL TEM (QUOTE (ERROR!))
						   T))
					(T                   (* Otherwise, just abort this command, e.g. 
							     (MOVE TTY TO HERE))
					   (RELSTK TEM)
					   (PROG (TEM2)
					     LP  (SETQ TEM2 (STKPOS (QUOTE ERRORSET)
								    -1 TEM2 TEM2))
					         (COND
						   ((NULL TEM2)
						     (HELP))
						   ((OR (ILESSP (STKNARGS TEM2)
								3)
							(NEQ (STKARG 3 TEM2)
							     (QUOTE STOP)))
						     (SETQ TEM2 (STKNTH -1 TEM2 TEM2))
						     (GO LP)))
					         (RETFROM TEM2 NIL T]
				[E (COND
				     (TYPEIN (LISPXWATCH EDITESTATS)
					     (SETQ EDITLISPFLG T)
					     (LISPX (LISPXREAD T T)
						    (QUOTE *)
						    NIL NIL T))
				     (LCFLG (EDITQF C))
				     (T (ERROR!]
				(P (COND
				     ((NEQ LASTP1 L)
				       (SETQ LASTP2 LASTP1)
				       (SETQ LASTP1 L)))
				   (BPNT0 (CAR L)
					  T 1 20 (CADR L)))
				(? (COND
				     ((NEQ LASTP1 L)
				       (SETQ LASTP2 LASTP1)
				       (SETQ LASTP1 L)))
				   (BPNT0 (CAR L)
					  T 100 100 (CADR L)))
				[(PP PPV)
				  (COND
				    ((NEQ LASTP1 L)
				      (SETQ LASTP2 LASTP1)
				      (SETQ LASTP1 L)))
				  (RESETLST (RESETSAVE (OUTPUT T))
					    (RESETSAVE (SETREADTABLE T))
					    (RESETVARS ((PRETTYFLG T))
						       (PRINTDEF (CAR L)
								 NIL
								 (NEQ C (QUOTE PPV)))
						       (TERPRI]
				(↑ (AND (CDR L)
					(SETQ UNFIND L))
				   (SETQ L (FLAST L)))
				[!0 

          (* Continues to do 0's until TAILP is false, i.e. takes you back to next highest left parentheses regardless of 
	  state of edit push down list)


				    (COND
				      ((NULL (CDR L))
					(ERROR!)))
				    (PROG NIL
				      LP  (SETQ L (CDR L))
				          (COND
					    ((TAILP (CAR L)
						    (CADR L))
					      (GO LP]
				(MARK (SETQ MARKLST (CONS L MARKLST)))
				[UNDO (COND
					[(AND TYPEIN (LISPXREADP))
                                                             (* Indicates that this UNDO command uses the history 
							     list.)
					  (COND
					    (EDITHISTORY (EDITH C))
					    (T (ERROR!]
					(T (EDIT!UNDO TYPEIN]
				(!UNDO (EDIT!UNDO T T))
				(TEST (SETQ UNDOLST (CONS NIL UNDOLST)))
				[UNBLOCK (COND
					   ((SETQ TEM (FMEMB NIL UNDOLST))
					     (EDITSMASH TEM (CONS NIL NIL)
							(CDR TEM)))
					   (T (PRIN1 (QUOTE "not blocked.
")
						     T]
				[← (COND
				     (MARKLST (AND (CDR L)
						   (SETQ UNFIND L))
					      (SETQ L (CAR MARKLST)))
				     (T (ERROR!]
				[\ (COND
				     (UNFIND (SETQ C L)
					     (SETQ L UNFIND)
					     (AND (CDR C)
						  (SETQ UNFIND C)))
				     (T (ERROR!]
				[\P (COND
				      ((AND LASTP1 (NEQ LASTP1 L))
					(SETQ L LASTP1))
				      ((AND LASTP2 (NEQ LASTP2 L))
					(SETQ L LASTP2))
				      (T (ERROR!]
				[←← (COND
				      (MARKLST (AND (CDR L)
						    (SETQ UNFIND L))
					       (SETQ L (CAR MARKLST))
					       (SETQ MARKLST (CDR MARKLST)))
				      (T (ERROR!]
				[(F BF)
				  (COND
				    ((NULL TYPEIN)
				      (AND (NULL COMS)
					   (ERROR!))
				      (SETQ FINDFLAG C)
				      (RETURN NIL)))
				  (SETQ TEM (LISPXREAD T EDITRDTBL))
				  (EDITSAVE1 TEM)
				  (COND
				    ((EQ C (QUOTE F))
				      (EDITQF TEM))
				    ((EQ C (QUOTE BF))
				      (EDITBF TEM))
				    (T (ERROR!]
				(UP (EDUP))
				(DELETE (SETQ C (QUOTE (DELETE)))
                                                             (* For undoing.)
					(EDIT: (QUOTE :)))
				(NX (EDIT* 1))
				(BK (EDIT* -1))
				[!NX                         (* Goes through a string of right parentheses to next 
							     element.)
				     (SETQ L (PROG ((L L)
						    (UF L))
					       LP  (COND
						     ((NULL (SETQ L (CDR L)))
						       (ERROR!))
						     ([NULL (CDR (FMEMB (CAR L)
									(CADR L]
						       (GO LP)))
					           (EDITCOM (QUOTE NX))
					           (SETQ UNFIND UF)
					           (RETURN L]
				(EDITDEFAULT C])

(EDITCOML
  [LAMBDA (C COPYFLG)              (* lmm "26-JUL-83 20:51")
    (PROG (C2 C3 TEM)              (* Handles list commands.)
      LP  [SETQ C2 (CAR (LISTP (SETQ C3 (CDR C]
          [SETQ C3 (CAR (LISTP (CDR (LISTP C3]
          (COND
	    ((AND LCFLG (SELECTQ C2
				 ((TO THRU THROUGH to thru through)
				   [COND
				     ((NULL (CDDR C))
				       (SETQ C3 -1)
				       (SETQ C2 (QUOTE THRU]
				   T)
				 NIL))
	      (EDITTO (CAR C)
		      C3 C2)
	      (RETURN))
	    ((NUMBERP (CAR C))
	      (EDIT2F (CAR C)
		      (CDR C))
	      (RETURN))
	    ((EQ C2 (QUOTE ..))
	      (EDITCONT (CAR C)
			(CDDR C)
			(QUOTE N))
	      (RETURN)))
          (RETURN
	    (COND
	      [[AND (NULL ORIGFLG)
		    (OR (SETQ TEM (EDITMAC (CAR C)
					   USERMACROS T))
			(SETQ TEM (EDITMAC (CAR C)
					   EDITMACROS T]
		(PROG (COPYFLG)
		      (RETURN (EDITCOMS (COND
					  ([NOT (ATOM (SETQ C3 (CAR TEM]
					    (SUBPAIR C3 (CDR C)
						     (CDR TEM)
						     T))
					  (T (SUBST (CDR C)
						    C3
						    (CDR TEM]
	      (T (SELECTQ
		   (CAR C)
		   [S (OR C2 (ERROR!))
		      (EDITCOM1 (LIST (LIST (COND
					      ((OR (EQ C2 (QUOTE #1))
						   (EQ C2 (QUOTE #2))
						   (EQ C2 (QUOTE #3)))
						(QUOTE SET))
					      (T (QUOTE SAVESET)))
					    C2
					    (PROG ((L L)
						   UNFIND)
					          (RETURN (EDLOC (CDDR C]
		   (MARK (SET C2 L))
		   (\ (SETQ UNFIND L)
		      (SETQ L (EDITCOM1 C2 T)))
		   (R (EDIT4F C2 C3 T))
		   (R1 (EDIT4F C2 C3 1))
		   ((RC RC1)
		     (EDIT4F C2 C3 (OR (EQ (CAR C)
					   (QUOTE RC))
				       1)
			     T))
		   (E (SETQ TEM (EDITCOM1 C2 T))
		      (COND
			((NULL (CADDR C))
			  (PRINT TEM T T)))
		      TEM)
		   (I (SETQ EDITLISPFLG T)
		      (AND TYPEIN (LISPXWATCH EDITISTATS))
		      [SETQ C (CONS (COND
				      ((ATOM C2)
					C2)
				      (T (EDITCOM1 C2 T)))
				    (EDITCOM1 (LIST (LIST (QUOTE MAPCAR)
							  (COND
							    (TYPEIN (MAPCAR (CDDR C)
									    (FUNCTION LISPX/)))
							    (T (CDDR C)))
							  (QUOTE EVAL]
		      (SETQ COPYFLG NIL)
		      (GO LP))
		   [N (COND
			((NLISTP (CAR L))
			  (ERROR!)))
		      (EDITNCONC (CAR L)
				 (COND
				   ((NLISTP (CDR C))
				     (CDR C))
				   (COPYFLG (COPY (CDR C)))
				   (T 
                                   (* APPEND makes it much easier for EDITHISTORY.)
				      (EDITAPPEND (CDR C]
		   (P (COND
			((NEQ LASTP1 L)
			  (SETQ LASTP2 LASTP1)
			  (SETQ LASTP1 L)))
		      (BPNT (CDR C)))
		   (F (EDIT4F C2 C3))
		   [FS (MAPC (CDR C)
			     (FUNCTION (LAMBDA (X)
				 (EDITQF (SETQ COM X]
		   (F= (EDIT4F (CONS (QUOTE ==)
				     C2)
			       C3))
		   (ORF (EDIT4F (COND
				  ((CDR (LISTP (CDR C)))
				    (CONS (QUOTE *ANY*)
					  (CDR C)))
				  (T C2))
				(QUOTE N)))
		   (BF (EDITBF C2 C3))
		   [NTH [SETQ TEM (COND
			    ((AND (LISTP (CAR L))
				  (EQ (CAAR L)
				      CLISPTRANFLG))
			      (CDDAR L))
			    (T (CAR L]
			(COND
			  ((NEQ TEM (SETQ TEM (EDITNTH TEM C2)))
			    (SETQ L (CONS TEM L]
		   [IF             (* Provides for conditional editing. Form is 
				   (if pred) or (if pred coms1 coms2))
		       (COND
			 ((CAR (NLSETQ (EDITCOM1 C2 T)))
                                   (* If predicate evaluates to true then perform list of commands)
			   (EDITCOMS C3))
			 ((CDDDR C)
                                   (* If false and default commands given (but may be NIL) execute them.)
			   (EDITCOMS (CADDDR C)))
			 (T        (* Otherwise generate error. This would be used to terminate a LP or ORR clause.)
			    (ERROR!]
		   (RI (EDIT.RI (CADR C)
				(CADDR C)
				(CAR L)))
		   (RO (EDIT.RO (CADR C)
				(CAR L)))
		   (LI (EDIT.LI (CADR C)
				(CAR L)))
		   (LO (EDIT.LO (CADR C)
				(CAR L)))
		   (BI (EDIT.BI (CADR C)
				(CADDR C)
				(CAR L)))
		   (BO (EDIT.BO (CADR C)
				(CAR L)))
		   (M (SETQ USERMACROS (CONS [COND
					       [(NLISTP C2)
						 (COND
						   ((SETQ TEM (EDITMAC C2 USERMACROS))
						     (RPLACD TEM (CDDR C))
						     (RETURN))
						   (T (NCONC1 EDITCOMSA C2)
						      (CONS C2 (CONS NIL (CDDR C]
					       (T (COND
						    ((SETQ TEM (EDITMAC (CAR C2)
									USERMACROS T))
						      (RPLACA TEM (CADDR C))
						      (RPLACD TEM (CDDDR C))
						      (RETURN))
						    (T (NCONC1 EDITCOMSL (CAR C2))
						       (CONS (CAR C2)
							     (CDDR C]
					     USERMACROS)))
		   (NX (EDIT* C2))
		   (BK (EDIT*(IMINUS C2)))
		   (ORR (EDOR (CDR C)))
		   (MBD (EDITMBD NIL (CDR C)))
		   (XTR (EDITXTR NIL (CDR C)))
		   ((THRU TO)      (* Same as (NIL THRU C2) i.e. starts here, does an up, and then a 
				   (BI 1 C2) etc.)
		     (EDITTO NIL C2 (CAR C)))
		   ((A B : AFTER BEFORE)
		     (EDIT: (CAR C)
			    NIL
			    (CDR C)))
		   (MV (EDITMV NIL (CADR C)
			       (CDDR C)))
		   [(LP LPQ)
		     (EDRPT (CDR C)
			    (EQ (CAR C)
				(QUOTE LPQ]
		   (LC (EDLOC (CDR C)))
		   (LCL (EDLOCL (CDR C)))
		   [← (SETQ L (PROG ((L L)
				     (UF L)
				     TEM)
				    (SETQ C3 (EDITFPAT C2))
				LP  [SETQ TEM (COND
					((AND (LISTP (CAR L))
					      (EQ (CAAR L)
						  CLISPTRANFLG))
					  (CDDAR L))
					(T (CAR L]
				    (COND
				      ((COND
					  ((ATOM C3)
					    (EQ C3 (CAR TEM)))
					  [(EQ (CAR C3)
					       (QUOTE IF))
					    (CAR (NLSETQ (EDITCOM1 (CADR C3)
								   T]
					  ((OR (EQ (CAR C3)
						   (QUOTE ))
					       (EQ (CAR C3)
						   (QUOTE )))
                                   (* Alt-mode.)
					    (EDIT4E C3 (CAR TEM)))
					  (T (EDIT4E C3 TEM)))
					(SETQ UNFIND UF)
					(RETURN L))
				      ((SETQ L (CDR L))
					(GO LP)))
				    (SETQ COM C2)
				    (ERROR!]
		   (BELOW 

          (* Allows specification of new position in terms of depth below some other position. E.g. (BELOW COND 1) indicates 
	  cond-clause you are currently in. (BELOW \ 2) Says 2 below UNFIND. This is useful for getting around in long lists, 
	  e.g. user might perform an F SELECTQ then F FOO. To get to next SELECTQ clause, he does (BELOW \ 1) and then Observe
	  Observe that you can also save the depth directly by performing (S FOO (LENGTH L)) and then USE BELOW as in 
	  (BELOW ↑ FOO))


			  (EDITBELOW C2 C3))
		   (SW (EDITSW (CADR C)
			       (CADDR C)))
		   [BIND           (* Makes available temporary variables for EDIT macros.
				   Used by FIX8 and FIX9 macros.)
			 (PROG (#1 #2 #3)
			       (RETURN (EDITCOMS (CDR C]
		   [COMS (MAPC (CDR C)
			       (FUNCTION (LAMBDA (X)
				   (EDITCOM (SETQ COM (EDITCOM1 X T]
		   (COMSQ (EDITCOMS (CDR C)))
		   [ORIGINAL (PROG ((ORIGFLG T))
			           (EDITCOMS (CDR C]
		   [RESETVAR (SETQ TEM (SETQ RESETVARSLST (CONS (CONS C2 (GETATOMVAL C2))
								RESETVARSLST)))
			     (COND
			       ([NULL (PROG1 (XNLSETQ (PROGN (SETATOMVAL C2 (EDITCOM1 C3 T))
							     (EDITCOMS (CDDDR C)))
						      NIL STOP)
					     (SETATOMVAL (CAAR TEM)
							 (CDAR TEM))
					     (SETQ RESETVARSLST (CDR TEM]
				 (ERROR!]
		   (EDITDEFAULT C])

(EDITCONT
  [LAMBDA (LC1 LC2 FLG)            (* DD: " 7-Oct-81 21:56")

          (* E.g. (COND CONTAINING RETURN) -
	  equivalent to three commands: F COND followed by (LCL RETURN) followed by (← COND) NOTE: this finds INNERMOST 
	  expression, i.e. if a COND contains another COND which contains a return, (COND CONTAINING RETURN) will find the 
	  inner one.)


    (SETQ L (PROG ((L L))
	          (SETQ LC1 (EDITFPAT LC1))
	      LP  (COND
		    ((NULL (EDIT4F LC1 FLG))
		      (ERROR!))
		    ((NULL (NLSETQ (EDLOCL LC2)))
		      (GO LP)))
	      LP1 (COND
		    ((NULL (SETQ L (CDR L)))
		      (ERROR!))
		    ([COND
			[(NLISTP LC1)
			  (EQ LC1 (CAR (LISTP (CAR L]
			[(EQ (CAR LC1)
			     (QUOTE ))
			  (EDIT4E LC1 (CAR (LISTP (CAR L]
			(T (EDIT4E LC1 (CAR L]
		      (RETURN L)))
	          (GO LP1])

(EDITMAC
  [LAMBDA (C LST FLG)
    (PROG (X Y)
      LP  [COND
	    ((NULL LST)
	      (RETURN NIL))
	    ([EQ C (CAR (SETQ X (CAR LST]
	      (SETQ Y (CDR X))
	      (COND
		([COND
		    (FLG (CAR Y))
		    (T (NULL (CAR Y]
		  (RETURN Y]
          (SETQ LST (CDR LST))
          (GO LP])

(EDITMBD
  [LAMBDA (LC X)                   (* lmm "26-JUL-83 20:55")
    (PROG (Y TOFLG)
          (COND
	    (LC (EDLOC LC T)))
          (EDUP)
          [SETQ Y (COND
	      (TOFLG (CAAR L))
	      (T (LIST (CAAR L]
          [EDIT2F 1 (COND
		    ((NULL (FEDITFINDP X EDITEMBEDTOKEN))
		      (LIST (APPEND X Y)))
		    (T (LSUBST Y EDITEMBEDTOKEN X]
          [SETQ L (CONS (CAAR L)
			(COND
			  ((TAILP (CAR L)
				  (CADR L))
                                   (* To remove the extra (annoying) tail.)
			    (CDR L))
			  (T L]
          (RETURN L])

(EDITMV
  [LAMBDA (LC OP X)
    (PROG ((L0 L)
	   L1 L2 TOFLG (COM0 COM))
          (COND
	    ((EQ OP (QUOTE HERE))
	      (COND
		((NULL LC)         (* (MOVE TO HERE --) is the same as (MOVE -- TO HERE))
		  (SETQ LC X)
		  (SETQ X NIL)))
	      (SETQ OP (QUOTE :)))
	    [(EQ (CAR X)
		 (QUOTE HERE))
	      (COND
		((NULL LC)         (* (MOVE TO AFTER HERE --) is the same as 
				   (MOVE -- TO AFTER HERE))
		  (SETQ LC (CDR X))
		  (SETQ X NIL))
		(T (SETQ X (CDR X]
	    ((EQ (CAR LC)
		 (QUOTE HERE))     (* (MOVE HERE TO AFTER --) is same as (MOVE TO AFTER --))
	      (SETQ LC NIL)))
          (AND X (NEQ (CAR X)
		      (QUOTE TTY:))
	       (EDLOC X T))
          (PROG ((L L0)
		 (LASTAIL LASTAIL))
	        (AND LC (EDLOC LC T))
	        (SETQ L1 L)        (* L1 will be used to delete the thing being moved.)
	        (EDUP)
	        (SETQ L2 L))
          (AND (EQ (CAR X)
		   (QUOTE TTY:))
	       (EDLOC X T))

          (* Normally we must locate X first because LC may specify TO's or THRU's which would affect numbers in X, e.g. 
	  (MOVE (2 THRU 3) TO AFTER 5) However, it is distracting to do a TTY: first and then have LC fail, so in this special
	  case, we do LC first.)


          (SETQ COM OP)
          (COND
	    ((MEMB (CAAR L2)
		   L)
	      (PRIN1 (QUOTE "destination is inside expression being moved.
")
		     T)
	      (SETQ COM COM0)
	      (ERROR!)))
          [EDITCOML (COND
		      [TOFLG (CONS OP (APPEND (CAAR L2]
		      (T (LIST OP (CAAR L2]
                                   (* This makes COPYFLG be bound to NIL while executing this command.)
          (PROG ((L L1)
		 (LASTAIL (CAR L2)))
	        (EDITCOMA (QUOTE DELETE)))
          [SETQ UNFIND (COND
	      ((AND LC X)          (* (MOVE -- TO AFTER --) unfind is where you put it.)
		L)
	      ([NULL (AND (CDR L2)
			  (NOT (MEMB (CAR L2)
				     (CADR L2)))
			  (NOT (TAILP (CAR L2)
				      (CADR L2]
                                   (* E.g. MOVE to --, or MOVE -- to after here.
				   UNFIND is where the thing that was moved used to be.)
		L2)
	      (T 

          (* CAR of L2 is not connected to the rest of L2, e.g. occurs when you MOVE the last thing in a list.
	  In this case, make UNFIND be equivalent to doing a 0 at the place where the object that was moved used to be.)


		 (CDR L2]
          (RETURN L])

(EDITCOMS
  [LAMBDA (COMS)                                            (* MAPC not used because EDITDEFAULT needs tail for 
												     |
							    spelling corrections.)
    (PROG NIL
      LP  [COND
	    ((NLISTP COMS)
	      (AND COMS (EDITCOM COMS))                     (* Permits commands that take lists of commands as 
							    arguments, e.g. ORR, IF, etc. to be given a single 
							    atomic command.)
	      (RETURN (CAR L]
          (EDITCOM (CAR COMS))
          (SETQ COMS (CDR COMS))
          (GO LP])

(EDIT!UNDO
  [LAMBDA (PRINTFLG !UNDOFLG)
    (AND EDITHISTORY (LISPXWATCH P.A.STATS))
    (PROG ((LST UNDOLST)
	   FLG)
      LP  (COND
	    ((OR (NULL LST)
		 (NULL (CAR LST)))
	      (GO OUT)))
          (SELECTQ (CAAR LST)
		   ((NIL !UNDO UNBLOCK)
		     (GO LP1))
		   [UNDO (COND
			   ((NULL !UNDOFLG)
			     (GO LP1]
		   NIL)
          (UNDOEDITCOM (CAR LST)
		       PRINTFLG)
          (COND
	    ((NULL !UNDOFLG)
	      (RETURN)))
          (SETQ FLG T)
      LP1 (SETQ LST (CDR LST))
          (GO LP)
      OUT (COND
	    (FLG (RETURN))
	    ((CDR LST)
	      (PRINT (QUOTE blocked)
		     T T))
	    (T (PRIN1 (QUOTE "nothing saved.
")
		      T])

(UNDOEDITCOM
  [LAMBDA (X FLG)                                           (* If FLG is T, name of command is 
							    printed.)
    (PROG (C)
          (COND
	    ((NLISTP X)
	      (ERROR!))
	    ((NULL (SETQ C (CAR X)))                        (* Has been undone before, but UNDO 
							    it again.)
	      (SETQ C (QUOTE ALREADY))
	      (GO OUT))
	    ([NEQ (CAR (FLAST L))
		  (CAR (FLAST (CADR X]

          (* The expression being edited is not the one referred to by this undo 
	  command. This can happen if you undo by using history list outside of scope 
	  of this editing.)


	      (PRIN1 (QUOTE "different expression.
")
		     T)
	      (SETQ COM NIL)
	      (ERROR!)))
          (SETQ L (CADR X))
          [PROG (L)

          (* L bound to NIL so that EDITSMASH doesnt search up it looking for CLISP 
	  markers.)


	        (UNDOEDITCOM1 X)
	        (EDITSMASH X NIL (CONS (CAR X)
				       (CDR X]

          (* Marks it so UNDO will skip it in future.
	  Note that undoing this UNDO will unmark it.)


      OUT (AND FLG (PRIN2 [COND
			    ((NULL C)
			      (QUOTE already))
			    ((NOT (NUMBERP C))
			      C)
			    (T (CONS C (QUOTE (--]
			  T T)
	       (PRIN1 (QUOTE " undone.
")
		      T))
          (RETURN T])

(UNDOEDITCOM1
  [LAMBDA (X)

          (* Takes a single entry on UNDOLST, i.e. list of the form 
	  (command-name L . UNDOLST1) and maps down the UNDOLST1 portion performing 
	  the corresonding EDITSMASHes.)


    (MAPC (CDDR X)
	  (FUNCTION (LAMBDA (X)
	      (COND
		((EQ (CAR X)
		     (QUOTE GROUPED))

          (* Used by TTY: command, which must add entire UNDOLST from subordinate call
	  to EDITL0 to its own UNDOLST1.)


		  (MAPC (CDR X)
			(FUNCTION UNDOEDITCOM1)))
		((EQ (CAR X)
		     (QUOTE LISPXHIST))
		  (EDITCOM1 (CDR X)))
		(T (EDITSMASH (CAR X)
			      (CADR X)
			      (CDDR X))
		   (LISPXWATCH EDITUNDOSTATS])

(EDITCOM1
  [LAMBDA (LST FLG)

          (* LST is a list of expressions of the form used for saving undo information on LISPXHIST, i.e. CAR of form is to be
												     |
	  applied to CDR. EDITCOM1 executes the forms and then transfers the undo information to the edit history list so that
												     |
	  UNDO can work as an edit command. EDITCOM1 is used by the S and I command, and for undoing these commands.
												     |
	  Value is the result of last application -
												     |
	  used by I command to get result of evaluaton back.)


    (PROG ((LISPXHIST (CONS (QUOTE SIDE)
			    (CONS (LIST 0)
				  LISPXHIST)))
	   TEM)

          (* LISPXHIST is rebound this way so that the SIDE information doesnt get stored on the regular side slot.
												     |
	  LISPXHIST is not completely rebound, i.e. to just the side info, so that other messages etc. will still be stored on
												     |
	  the correct entry)


          [COND
	    [FLG                                            (* IF FLG is T, LST is a single form.)
		 (SETQ EDITLISPFLG T)
												     |
		 (SETQ TEM (EVAL (COND
				   (TYPEIN (LISPX/ LST))
				   (T LST]
	    (T (MAPC LST (FUNCTION (LAMBDA (X)
			 (SETQ TEM (COND
			     ((NLISTP X)
			       TEM)
			     ((LISTP (CAR X))
			       (/RPLNODE (CAR X)
					 (CADR X)
					 (CDDR X)))
			     (T (APPLY (CAR X)
				       (CDR X]
          (AND [SETQ LISPXHIST (CDR (LISTGET1 LISPXHIST (QUOTE SIDE]
	       (SETQ UNDOLST1 (CONS (CONS (QUOTE LISPXHIST)
					  LISPXHIST)
				    UNDOLST1)))
          (RETURN TEM])

(EDITSAVE
  [LAMBDA (COM)                    (* lmm "22-NOV-82 00:11")
                                   (* This function was originally included in HIST but is now in the editor for 
				   block compilation.)
    (PROG (X)
          (COND
	    ((FMEMB COM DONTSAVEHISTORYCOMS)
	      (RETURN))
	    ((AND (OR (NUMBERP COM)
		      (FMEMB COM COMPACTHISTORYCOMS))
		  (OR [NUMBERP (CAR (SETQ X (CAAAR EDITHISTORY]
		      (FMEMB (CAR X)
			     COMPACTHISTORYCOMS))
		  (NOT (FMEMB HISTSTR0 X)))
                                   (* CAAR is first entry, CAAAR the input.)
	      (NCONC1 X COM)
	      (RETURN X))
	    ((OR (FMEMB COM HISTORYCOMS)
		 (AND (LISTP COM)
		      (FMEMB (CAR COM)
			     HISTORYCOMS)))
	      (RETURN)))
          (SETQ EDITHIST (CDDR (HISTORYSAVE EDITHISTORY (QUOTE *)
					    NIL COM)))

          (* EDITHIST is bound in EDITL0. Note that it is imperative for subsequently storing the undo information to save the
	  history entry BEFORE executing the command since you cannot be sure that the first entry on EDITHISTORY corresponds 
	  to the command just completed, e.g. consider a loop command with a TTY in it.)


          (COND
	    (EDITLISPFLG (SETQ EDITLISPFLG NIL)))
          (RETURN NIL])

(EDITSAVE1
  [LAMBDA (X REPLACEFLG)           (* Used to add inputs to history event, e.g. for F commands, and for line 
				   commands typed without parentheses)
    (AND EDITHIST EDITHISTORY (PROG (TEM)
				    (COND
				      [[OR (NULL REREADFLG)
					   (NULL (SETQ TEM (CDR (FMEMB (QUOTE *GROUP*)
								       (CADR (FMEMB HISTSTR3 
										    REREADFLG]
					(COND
					  (REPLACEFLG (FRPLACA (CAAR EDITHISTORY)
							       X))
					  (T (NCONC1 (CAAAR EDITHISTORY)
						     X]
				      (T 
                                   (* Value is the list of events in the GROUP property.)
					 (COND
					   (REPLACEFLG (FRPLACA (CAR (LAST (CAR TEM)))
								X))
					   (T (NCONC1 (CAAR (LAST (CAR TEM)))
						      X])

(EDITSMASH
  [LAMBDA (OLD A D)                                         (* wt: "12-MAY-80 21:32")|
                                                            (* ALL edit changes go through this function.)
|
    (COND|
      ((NLISTP OLD)|
	(ERROR!)))|
    (AND EDITSMASHUSERFN (APPLY* EDITSMASHUSERFN OLD L))|
|
          (* hook to enable updating a structure thatis being edited that has hash links off of it. the PROG below is a built 
|
	  in example of how such a thing might be used)|
|
|
    (AND EDITCHANGES (FRPLACA (CDR EDITCHANGES)|
			      T))|
    (SETQ UNDOLST1 (CONS (CONS OLD (CONS (CAR OLD)|
					 (CDR OLD)))|
			 UNDOLST1))|
    (AND EDITHISTORY (LISPXWATCH EDITUNDOSAVES))|
    (FRPLACA OLD A)|
    (FRPLACD OLD D)|
    (PROG ((L L)|
	   TEM)|
      LP  (COND|
	    ((NULL L)|
	      (RETURN))|
	    ((NLISTP (CAR L)))|
	    [(EQ (CAAR L)|
		 CLISPTRANFLG)|
|
          (* Deletes CLISP translation. NOt made part of the edit event, because of the possibility of the uer performing two 
|
	  changes, and then undoing the first, which would then restore the translation, even though it no longer corresond to
|
	  the untranslated and chaged CLISP.)|
|
|
	      (COND|
		((LISTP (SETQ TEM (CDDAR L)))|
		  (/RPLNODE (CAR L)|
			    (CAR TEM)|
			    (CDR TEM)))|
		(T                                          (* CLISP% used to tranlsate an atom -|
							    e.g. QLISP does this.)|
		   (/RPLACA (MEMB (CAR L)|
				  (CADR L))|
			    TEM]|
	    ((AND CLISPARRAY (GETHASH (CAR L)|
				      CLISPARRAY))|
	      (/PUTHASH (CAR L)|
			NIL CLISPARRAY)))|
          (SETQ L (CDR L))|
          (GO LP))|
    OLD])

(EDITSMASH1
  [LAMBDA (X)
    (AND CHANGESARRAY (PROG ((L0 L))
			LP  (COND
			      ((NULL L0)
				(GO OUT))
			      ((NLISTP (CAR L0)))
			      ((GETHASH (CAR L0)
					CHANGESARRAY)
				(RETURN NIL)))
			    (SETQ L0 (CDR L0))
			    (GO LP)
			OUT [AND (NLISTP X)
				 (SETQ X (COND
				     ((OR (NULL (SETQ X (CADR L)))
					  (FMEMB (CAR L)
						 X))
				       (CAR L))
				     (T X]
			    (SETQ UNDOLST1 (CONS (CONS (QUOTE LISPXHIST)
						       (LIST (LIST (QUOTE /PUTHASH)
								   X
								   (GETHASH X CHANGESARRAY)
								   CHANGESARRAY)))
						 UNDOLST1))

          (* Done this way for efficiency rather than going through editcom1 since we 
	  know what to undosave.)


			    (PUTHASH X ATM CHANGESARRAY)
			    (RETURN])

(EDITSW
  [LAMBDA (M N)
    (PROG ((Y (EDITNTH (CAR L)
		       M))
	   (Z (EDITNTH (CAR L)
		       N))
	   TEM)
          (SETQ TEM (CAR Y))
          (EDITSMASH Y (CAR Z)
		     (CDR Y))
          (EDITSMASH1 (CAR Z))
          (EDITSMASH Z TEM (CDR Z))
          (EDITSMASH1 TEM])

(EDITNCONC
  [LAMBDA (X Y)
    (COND
      ((NULL X)
	Y)
      ((NLISTP X)
	(ERROR!))
      (T (PROG1 X (EDITSMASH (SETQ X (LAST X))
			     (CAR X)
			     Y)
		(AND CHANGESARRAY (MAPC Y (FUNCTION EDITSMASH1])

(EDITAPPEND
  [LAMBDA (X)                                               (* wt: " 3-OCT-78 19:59")
                                                                                                     |
                                                            (* copies top level, differs fro append in that if ends 
												     |
							    in non-nil, the non-nil is retained)
												     |
    (COND
      ((NLISTP X)
	X)
      (T (CONS (CAR X)
	       (EDITAPPEND (CDR X])

(EDIT1F
  [LAMBDA (C L)                                             (* wt: "13-JUN-78 00:55")
    (PROG (TEM)
          [COND
	    [(EQ C 0)
	      (RETURN (COND
			((CDR L)
			  (RETURN (CDR L)))
			(T (SETQQ COM (ERROR: . "can't - at top.
"))
			   (ERROR!]
	    ((NLISTP (CAR L))
	      (ERROR!))
	    ((EQ (CAAR L)
		 CLISPTRANFLG)
	      (SETQ TEM (CDDAR L)))
	    (T (SETQ TEM (CAR L]
          (RETURN (COND
		    [(IGREATERP C 0)
		      (COND
			((NLISTP (SETQ TEM (NTH TEM C)))
			  (ERROR!))
			(T (CONS (CAR (SETQ LASTAIL TEM))
				 L]
		    ([NULL (SETQ TEM (NLEFT TEM (IMINUS C]
		      (ERROR!))
		    (T (CONS (CAR (SETQ LASTAIL TEM))
			     L])

(EDIT2F
  [LAMBDA (N X)
    (PROG ([CL (COND
		 ((AND (LISTP (CAR L))
		       (EQ (CAAR L)
			   CLISPTRANFLG))
		   (CDDAR L))
		 (T (CAR L]
	   TEM)

          (* Handles all deletion, replacement and insertion.
	  For deletion and replacement, saves information about what was destroyed on 
	  variable LASTCHANGE. The command UNDO can then be used to restore the 
	  structure.)


          [COND
	    ((NLISTP CL)
	      (ERROR!))
	    (COPYFLG (SETQ X (COPY X)))
	    (T                                              (* APPEND makes it much easier for 
							    EDITHISTORY.)
	       (SETQ X (APPEND X]
          (COND
	    [(IGREATERP N 0)
	      (COND
		([AND (NEQ N 1)
		      (OR [NLISTP (SETQ TEM (NTH CL (SUB1 N]
			  (NLISTP (CDR TEM]
		  (SETQ COM N)
		  (ERROR!))
		((NULL X)                                   (* Delete)
		  (GO DELETE))
		(T                                          (* Replace)
		   (GO REPLACE]
	    ([OR (EQ N 0)
		 (NULL X)
		 (NLISTP (SETQ TEM (NTH CL (IMINUS N]
	      (ERROR!))
	    (T                                              (* Insert)
	       (COND
		 ((NEQ N -1)
		   (SETQ CL TEM)))                          (* Insertion also physically changes
							    indicated tail.)
	       (EDITSMASH CL (CAR X)
			  (CONS (CAR CL)
				(CDR CL)))
	       (EDITSMASH1 (CAR X))
	       [COND
		 ((CDR X)
		   (AND CHANGESARRAY (MAPC (CDR X)
					   (FUNCTION EDITSMASH1)))
		   (EDITSMASH CL (CAR CL)
			      (NCONC (CDR X)
				     (CDR CL]
	       (RETURN)))
      DELETE
          [COND
	    [(EQ N 1)
	      (OR (LISTP (CDR CL))
		  (ERROR!))

          (* To delete first element you must effectively replace it by second element
	  and delete second element. This is why you cannot delete the first element 
	  of a list when it is the only one.)


	      (EDITSMASH CL (CADR CL)
			 (CDDR CL))
	      (EDITSMASH1 (COND
			    ((TAILP CL (CADR L))
			      (CADR L))
			    (T CL]
	    (T 

          (* Deleting any other element is done by patching around it, i.e. by 
	  changing previous CDR to point to its CDR.
	  In general, you can't solve problem so pointers into tails will always be 
	  updated without going down the entire list and moving everything over.
	  See manual.)


	       (EDITSMASH TEM (CAR TEM)
			  (CDDR TEM))
	       (EDITSMASH1 (COND
			     ((TAILP CL (CADR L))
			       (CADR L))
			     (T CL]
          (RETURN)
      REPLACE
          [COND
	    ((NEQ N 1)
	      (SETQ CL (CDR TEM]

          (* Replacement physically changes indicated tail i.e. if you are editing 
	  (A B C D) and set FOO to (NTH 3) i.e. (C D) and then do a 
	  (3 X Y) FOO will be changed to (X Y D))


          (EDITSMASH CL (CAR X)
		     (CDR CL))
          (EDITSMASH1 (CAR X))
          (COND
	    ((CDR X)
	      (AND CHANGESARRAY (MAPC (CDR X)
				      (FUNCTION EDITSMASH1)))
	      (EDITSMASH CL (CAR CL)
			 (NCONC (CDR X)
				(CDR CL])

(EDIT4E
  [LAMBDA (PAT X CHANGEFLG)        (* DD: "29-MAR-83 18:02")
    (COND
      ((EQ PAT X)
	T)
      ((NLISTP PAT)
	(OR (EQ PAT (QUOTE &))
	    (AND (NUMBERP PAT)
		 (EQP PAT X))
	    (AND (STRINGP PAT)
		 (STREQUAL PAT X)
		 T)))
      ((EQ (CAR PAT)
	   (QUOTE *ANY*))
	(PROG NIL
	  LP  (COND
		((NULL (SETQ PAT (CDR PAT)))
		  (RETURN NIL))
		((EDIT4E (CAR PAT)
			 X)
		  (RETURN T)))
	      (GO LP)))
      ((EQ (CAR PAT)
	   (QUOTE ))             (*  is the way the line printer prints alt-modes.)
	(AND (OR (LITATOM X)
		 (STRINGP X))
	     (EDIT4E1 (CDR PAT)
		      (DUNPACK X CHCONLST2)
		      X CHANGEFLG)))
      ((EQ (CAR PAT)
	   (QUOTE ))

          (* This pattern specifies a search for a 'close' word, using the spelling corrector, i.e. SKOR.
	  CADR of PAT is the number of characters in the word, CDDR its CHCON. The pattern is constructed by EDITFPAT when it 
	  encounters a word or string that ends in .)


	(AND (OR (LITATOM X)
		 (STRINGP X))
	     (SKOR0 X (CADR PAT)
		    (CADDR PAT)
		    (CDDDR PAT))
	     (PROGN (AND (NEQ EDITQUIETFLG T)
			 (PRIN1 (QUOTE =)
				T)
			 (PRINT X T T))
		    T)))
      [(EQ (CAR PAT)
	   (QUOTE --))
	(OR (NULL (SETQ PAT (CDR PAT)))
	    (PROG NIL
	      LP  (COND
		    ((EDIT4E PAT X)
		      (RETURN T))
		    ((NLISTP X)
		      (RETURN NIL)))
	          (SETQ X (CDR X))
	          (GO LP]
      ((EQ (CAR PAT)
	   (QUOTE ==))
	(EQ (CDR PAT)
	    X))
      ((EQ (CAR (LISTP (CDR PAT)))
	   (QUOTE ..))
	(AND (EDIT4E (CAR PAT)
		     (CAR X))
	     [NLSETQ (PROG ((L (LIST X))
			    UNFIND ORIGFLG LASTAIL)
		           (EDLOCL (CDDR PAT]
	     T))
      ((EQ (CAR PAT)
	   (QUOTE @))
	(APPLY* (CADR PAT)
		X))
      ((NLISTP X)
	NIL)
      ([EDIT4E (CAR PAT)
	       (CAR (COND
		      ((EQ (CAR X)
			   CLISPTRANFLG)
			(SETQ X (CDDR X)))
		      (T X]
	(EDIT4E (CDR PAT)
		(CDR X])

(EDIT4E1
  [LAMBDA (PAT LST X CHANGEFLG)

          (* Compares PAT and X. PAT is a DUNPACK of an atom or string which contains 
	  one or more alt-modes. An alt-mode can match any number 
	  (including zero) of characters in X, e.g. NUM$, $BERP, and $U$E$ all match 
	  NUMBERP. If CHANGEFLG is T and PAT matches X, the value of EDIT4E1 is a list
	  of pointer pairs corresponding to the beginning and end of the sequence 
	  matched by each alt-mode.)


    (PROG (PAT1 LST1 LST2 MATCH)
      LP  (COND
	    [(NULL PAT)
	      (COND
		((OR (NULL LST)
		     (NULL PAT1))

          (* If LST is NIL, then the final characters in PAT matched those in X, e.g. 
	  $BERP vs NUMBERP. If PAT1 is NIL, then the last character in PAT was an 
	  altmode, e.g. NUM$ vs NUMBERP, so extra characters in LST are acceptable.)


		  (GO SUCC))
		(LST1 (SETQ LST LST1)
		      (SETQ LST1 NIL)
		      (SETQ PAT PAT1))
		(T (RETURN NIL]
	    ((EQ (CAR PAT)
		 (QUOTE ))
	      [COND
		((AND CHANGEFLG LST2 LST1)

          (* An alt-mode was seen before. (Note that we cannot determine the scope of 
	  an alt-mode until the next one is encountered, or the end of the match is 
	  reached.) LST2 was the value of LST as of the beginning of the alt-mode 
	  match, LST1 the value of LST as of its end.
	  However, if LST1 is NIL, then there were two alt-modes in a row, and we 
	  ignore the last one.)


		  (SETQ MATCH (CONS (CONS LST2 LST1)
				    MATCH]
	      (SETQ PAT (SETQ PAT1 (CDR PAT)))

          (* PAT1 is a pointer into PAT as of the first character after an alt-mode.
	  It is used for backing up after a partially successful match, e.g. if PAT is
	  $XYZ$ and X is XYXYZ.)


	      (SETQ LST1 NIL)
	      (SETQ LST2 LST)
	      (GO LP))
	    ((NULL LST)
	      (RETURN NIL))
	    ((EQ (CAR PAT)
		 (CAR LST))
	      (COND
		((NULL LST1)
		  (SETQ LST1 LST)))
	      (SETQ PAT (CDR PAT)))
	    ((NULL (SETQ PAT PAT1))
	      (RETURN NIL))
	    (LST1 (SETQ LST LST1)
		  (SETQ LST1 NIL)))
          (SETQ LST (CDR LST))
          (GO LP)
      SUCC(COND
	    [CHANGEFLG (AND (NEQ EDITQUIETFLG T)
			    (PRIN2 X T T))

          (* EDIT4F2 will be called, and it will print -> followed by the new atom or 
	  string.)


		       (RETURN (DREVERSE (CONS (CONS LST2 LST1)
					       MATCH]
	    ((NEQ EDITQUIETFLG T)
	      (PRIN1 (QUOTE =)
		     T)
	      (PRINT X T T)))
          (RETURN T])

(EDITQF
  [LAMBDA (PAT)
    (PROG (Q1)
          (COND
	    ([AND (LISTP (SETQ Q1 (CAR L)))
		  (SETQ Q1 (MEMB PAT (COND
				   ((EQ (CAR Q1)
					CLISPTRANFLG)
				     (CDDDR Q1))
				   (T (CDR Q1]
	      (SETQ L (CONS (COND
			      (UPFINDFLG Q1)
			      (T (SETQ LASTAIL Q1)
				 (CAR Q1)))
			    L)))
	    (T (EDIT4F PAT (QUOTE N])

(EDIT4F
  [LAMBDA (PAT C3 CHANGEFLG CHARFLG)
                                   (* DD: "29-MAR-83 17:56")

          (* Searches the expression being edited, starting from current point and continuing in print order, until a position
	  is found for which the current level list matches PAT. Then, if (CAR L) is atomic, effectively does an UP 
	  (unless UPFINDFLG=NIL) Thus F (SETQ X --) and F SETQ will produce the same result. -
	  If C3 is T, the search starts with the current exppession. If C3 is 'N', the search skips the current expression, 
	  although it does search inside of it.)


    (PROG (LL X TAIL (FF (CONS))
	      (TOPLVL (NULL C3))
	      N NEWFLG (PAT0 PAT))
          [COND
	    ((EQ [CAR (LISTP (CDR (LISTP PAT]
		 (QUOTE ..))
	      (RETURN (EDITCONT (CAR PAT)
				(CDDR PAT)
				C3]
          (SETQ PAT (EDITFPAT PAT T))
                                   (* Checks PAT for altmodes.)
          (SETQ LL L)
          (COND
	    (CHANGEFLG (SETQ N (COND
			   ((NUMBERP CHANGEFLG)
			     CHANGEFLG)
			   (T      (* Means change all occurrences.)
			      -1)))
		       (SETQ TOPLVL NIL)
		       (SETQ C3 (EDITFPAT1 C3))
		       [AND CHARFLG (NLISTP PAT)
			    (NLISTP C3)
			    [SETQ PAT (CONS (QUOTE )
					    (CONS (QUOTE )
						  (NCONC1 (UNPACK PAT)
							  (QUOTE ]
			    (SETQ C3 (CONS (QUOTE )
					   (CONS (QUOTE )
						 (NCONC1 (UNPACK C3)
							 (QUOTE ]

          (* If CHARFLG is T and neither pattern nor format contain alt-modes, supply them, i.e. user wants a character 
	  replacement operation. This option is used by the RC and RC1 commands, and by ESUBST.)


		       )
	    [(EQ C3 (QUOTE N))
	      (SETQ N 1)
	      [COND
		((NLISTP (CAR L))
		  (GO LP1))
		((EQ (CAAR L)
		     CLISPTRANFLG)
		  (SETQ X (CADDAR L)))
		(T (SETQ X (CAAR L]
	      (SETQ LL (CONS X L))
	      (COND
		((AND (NLISTP X)
		      UPFINDFLG)

          (* E.g. If at (COND --) and do F COND, cannot be allowed to match with this COND, as the subsequent UP would leave 
	  you right where you started. However, if UPFINDFLG is NIL, then it is ok to match with this COND.)


		  (GO LP1]
	    (T (SETQ N C3)))
          (COND
	    ((NOT (NUMBERP N))
	      (SETQ N 1)))
          [COND
	    ([COND
		[(TAILP (CAR LL)
			(CADR LL))
		  (AND (EQ (CAR (LISTP PAT))
			   (QUOTE ...))
		       (EDIT4E (CDR PAT)
			       (CAR LL]
		(T (EDIT4E PAT (CAR LL]

          (* This EDIT4E check is necessary because once search starts, EDIT4F1 is always looking down one level, i.e. at 
	  car's of list it is examining. Similarly, since once the search starts, tails are only matched against patterns 
	  beginning with ..., we do not call EDIT4E here on a TAIL unless the pattern also begins with ...)


	      (COND
		[CHANGEFLG (COND
			     ([NULL (AND (EQ PAT (QUOTE &))
					 (LISTP (CAR L]

          (* R can't work if you are already there, e.g. current expression is B and user says (R B C), or current expression 
	  is (CAR X) and user says (R (CAR X) (CDR Y)). the AND check is to enable commands like (r1 & .) to work.
	  In this case, it is assumed that & meant the first element in the current expression, not the current expression 
	  itself.)


			       (PRINT (QUOTE can't)
				      T T)
			       (ERROR!]
		((ZEROP (SETQ N (SUB1 N)))
		  (RETURN (SETQ L LL]
          (SETQ X (CAR LL))
      LP  (COND
	    [(EDIT4F1 PAT X MAXLEVEL TAIL)
	      (AND (CDR L)
		   (SETQ UNFIND L))
	      (RETURN (CAR (SETQ L (NCONC (CAR FF)
					  (COND
					    ((EQ (CADR FF)
						 (CAR LL))
                                   (* To avoid repetitions.)
					      (CDR LL))
					    (T LL]
	    (TOPLVL (GO ERROR))
	    ((EQ CHANGEFLG T)

          (* R command only affects current expression. However, R1 is equivalent to an F and then a replacement and so is 
	  allowed to search above the current expression.)


	      (COND
		(NEWFLG (RETURN T)))
	      (GO ERROR)))
      LP1 (SETQ X (CAR LL))        (* Ascend from this element and begin searching the next element in the next 
				   higher list.)
          (COND
	    ((NULL (SETQ LL (CDR LL)))
	      (COND
		(NEWFLG            (* This was a replacement operation which has found a successful match.)
			(RETURN T)))
	      (GO ERROR))
	    ([SETQ TAIL (COND
		  ((AND (EQ X (CAR LASTAIL))
			(TAILP LASTAIL (CAR LL)))

          (* This is sort of an open UP. It is necessary to handle the case where the current expression is atomic and the 
	  next higher expression contains two instances of it.)


		    LASTAIL)
		  (T (MEMB X (CAR LL]
	      (SETQ X (CDR TAIL))
	      (GO LP)))
          (GO LP1)
      ERROR
          (SETQ COM PAT0)
          (ERROR!])

(EDIT4F1
  [LAMBDA (PAT X LVL TAIL)                                  (* wt: " 5-APR-78 11:07")

          (* In most cases, EDIT4F1 treats X as a list, and matches PAT against elements of X. However, if TAIL is not NIL, 
	  EDIT4F1 will also look at X itself if (1) X is not a list (this covers the case where a list ends in an atom other 
	  than NIL), or (2) PAT begins with ... In both cases, X is EQ to CDR of TAIL, and TAIL is used if replacement is 
	  being carried out.)


    (PROG ((L L)
	   TEM XX)
          (AND CHANGEFLG (NEQ X (CAR L))
	       (SETQ L (CONS X L)))

          (* So that if there are any replacements in CLISP expressions that have been
	  translated, editsmash will know to remove the translations.)


          [COND
	    ((AND (LISTP X)
		  (NULL TAIL)
		  (EQ (CAR X)
		      CLISPTRANFLG))
	      (SETQ XX X)
	      (SETQ TAIL (CDR X))
	      (SETQ X (CDDR X]
      LP  (COND
	    ((AND (LISTP PAT)
		  (EQ (CAR PAT)
		      (QUOTE ...)))

          (* This check is made before the NULL check because F 
	  (...) is acceptable and means find the first list ending in NIL.)


	      (GO CHECK...))
	    ((NULL X))
	    ((AND LVL (NOT (IGREATERP LVL 0)))

          (* NIL = infinity.)


	      (PRIN1 (QUOTE "maxlevel exceeded.
")
		     T))
	    ((LISTP X)
	      (GO ELEMENT))
	    ((AND TAIL (SETQ TEM (EDIT4E PAT X CHANGEFLG)))

          (* Compares PAT with atomic tail of 
							    a list.)


	      [COND
		(CHANGEFLG (SETQ X (EDIT4F2 TAIL TEM C3 T]
	      (COND
		((ZEROP (SETQ N (SUB1 N)))
		  (GO SUCC)))

          (* Note that the current expression is left at the 
	  (atomic) tail to prevent accidents like 
	  (MOVE FOO TO ...) and FOO is CDR of (FIE . FOO))


	      ))
          (RETURN NIL)
      CHECK...
          (COND
	    [(AND TAIL (SETQ TEM (EDIT4E (CDR PAT)
					 X CHANGEFLG)))

          (* Note that at this point, X may still be atomic, as in F 
	  (... . B))


	      [COND
		(CHANGEFLG (SETQ X (EDIT4F2 TAIL TEM C3 T]
	      (COND
		((ZEROP (SETQ N (SUB1 N)))
		  (GO SUCC))
		(CHANGEFLG                                  (* Don't want to go to LP1 because you don't want to 
							    search through new structure inserted by replacement.)
			   (RETURN NIL))
		((NLISTP X)
		  (RETURN NIL))
		(T (GO LP1]
	    ((NLISTP X)
	      (RETURN NIL))
	    (T                                              (* PAT is a ... pattern, so don't 
							    compare it with elements.)
	       (GO DESCEND)))
      ELEMENT
          [COND
	    ((SETQ TEM (EDIT4E PAT (CAR X)
			       CHANGEFLG))
	      (COND
		(CHANGEFLG (EDIT4F2 X TEM C3)))
	      (COND
		((ZEROP (SETQ N (SUB1 N)))
		  [COND
		    ((OR (NULL UPFINDFLG)
			 (LISTP (CAR X)))

          (* Instead of adding atom and then doing UP -
	  this check is made and atom not added if UPFINDFLG is T.)


		      (SETQ LASTAIL X)                      (* For use by UP.)
		      (SETQ X (CAR X]
		  (GO SUCC))
		(CHANGEFLG                                  (* Don't want to go to DESCEND because you don't want to
							    search through new structure inserted by replacement 
							    operation.)
			   (GO LP1]
      DESCEND
          (COND
	    ((AND (NULL TOPLVL)
		  (LISTP (CAR X))
		  (EDIT4F1 PAT (CAR X)
			   (AND LVL (SUB1 LVL)))
		  (ZEROP N))
	      (SETQ X (CAR X)))
	    (T (GO LP1)))
      SUCC(AND XX (EQ X (CDDR XX))
	       (SETQ X XX))                                 (* CLISP%  expression.)
          (COND
	    ([AND FF (NOT (AND X (EQ X (CADR FF]

          (* To eliminate repetitions.)


	      (TCONC FF X)))
          (RETURN (OR FF T))
      LP1 (SETQ TAIL X)
          (SETQ X (CDR X))
          (AND LVL (SETQ LVL (SUB1 LVL)))
          (GO LP])

(EDIT4F2
  [LAMBDA (NODE MATCH FORMAT CDRFLG)

          (* Analagous to CONSTRUCT in FLIP, with EDITFPAT1 playing the role of 
	  FORMTRAN. Replaces CAR of NODE by FORMAT 
	  (CDR if CDRFLG=T). MATCH is the value returned by EDIT4E.
	  If MATCH is a list of pointers and FORMAT begins with $, EDIT4F2 assembles a
	  new atom or string, replacing those sequences not matched by alt-modes with 
	  elements from NEW. For example, user types 
	  (R $1 $2) then all terminal 1's will be changed to 2's.)


    (PROG ([X (COND
		(CDRFLG (CDR NODE))
		(T (CAR NODE]
	   FLG)
          (SETQ NEWFLG T)                                   (* to let EDIT4F know that a 
							    successful match was found.)
          (SETQ FORMAT (EDIT4F3 FORMAT MATCH X))
          (COND
	    ((EQ EDITQUIETFLG T)
	      (GO OUT))
	    ((NEQ MATCH T)                                  (* EDIT4E printed X.)
	      )
	    (FLG 

          (* MATCH was T, indicating no alt-modes, and therefore X was not printed by 
	  EDIT4E1. However, FLG being T means a format was used, and therefore X must 
	  be printed here. For example, (R FOO $1))


		 (PRIN2 X T T))
	    (T (GO OUT)))
          (PRIN1 (QUOTE ->)
		 T)
          (PRINT FORMAT T T)
      OUT [COND
	    (CDRFLG (EDITSMASH NODE (CAR NODE)
			       FORMAT))
	    (T (EDITSMASH NODE FORMAT (CDR NODE]
          (EDITSMASH1 FORMAT)
          (RETURN FORMAT])

(EDIT4F3
  [LAMBDA (FORMAT MATCH X)         (* lmm "18-NOV-82 13:54")
    (PROG (LST)
          (COND
	    [(LISTP FORMAT)
	      (COND
		([EQ (CAR FORMAT)
		     (CONSTANT (CHARACTER (CHARCODE ESCAPE]
		  (SETQ FLG T))
		(T (RETURN (CONS (EDIT4F3 (CAR FORMAT)
					  MATCH X)
				 (EDIT4F3 (CDR FORMAT)
					  MATCH X]
	    (T (RETURN FORMAT)))
      LP  [COND
	    [(NLISTP (SETQ FORMAT (CDR FORMAT)))
	      (RETURN (COND
			((AND (EQ MATCH T)
			      (NULL (CDR LST)))
			  (CAR LST))
			((STRINGP X)
			  (CONCATLIST LST))
			(T (PACK LST]
	    [[EQ (CAR FORMAT)
		 (CONSTANT (CHARACTER (CHARCODE ESCAPE]
	      (SETQ LST (NCONC LST (COND
				 ((EQ MATCH T)
                                   (* Permits user to say (R FOO $1) meaning change all FOO's to FOO1's, etc.)
				   (LIST X))
				 (T (PROG1 (LDIFF (CAAR MATCH)
						  (CDAR MATCH))
					   (SETQ MATCH (CDR MATCH]
	    (T (SETQ LST (NCONC1 LST (CAR FORMAT]
          (GO LP])

(EDITFPAT
  [LAMBDA (PAT FLG)                                         (* wt: 23-NOV-76 1 45)

          (* Done once at beginning of find operation. Replaces atoms ending in alt-modes with patterns recognized by EDIT4E.
	  Analagous to PATTRAN in FLIP, with role of MATCH being played by EDIT4E1.)


    (PROG (TEM)
          (RETURN (COND
		    [(LISTP PAT)
		      (COND
			((OR (EQ (CAR PAT)
				 (QUOTE ==))
			     (EQ (CAR PAT)
				 (QUOTE ))
			     (EQ (CAR PAT)
				 (QUOTE )))
			  PAT)
			(T (CONS (EDITFPAT (CAR PAT))
				 (EDITFPAT (CDR PAT]
		    ((OR (EQ PAT (QUOTE ))
			 (NOT (STRPOS (QUOTE )
				      PAT)))
		      PAT)
		    [(STRPOS (QUOTE "")
			     PAT -2)                        (* Used to specify a search for a 'close' word using 
												     |
							    SKOR. See comment in EDIT4E.)
		      (SETQ TEM (CHCON PAT))
		      (FRPLACD (NLEFT TEM 3))
		      (CONS (QUOTE )
			    (CONS (LENGTH TEM)
				  (CONS (PROG ((ND 0)
					       CHAR)
					      [MAPC TEM (FUNCTION (LAMBDA (X)
							(COND
							  ((EQ X CHAR)
							    (SETQ ND (ADD1 ND)))
							  (T (SETQ CHAR X]
					      (RETURN ND))
					TEM]
		    (T (CONS (QUOTE )
			     (COND
			       (FLG (DUNPACK PAT CHCONLST1))
			       (T (UNPACK PAT])

(EDITFPAT1
  [LAMBDA (X)                                               (* rmk: " 6-JUN-82 15:15")

          (* Analgous to FORMTRAN in FLIP, with EDIT4F2 playing the role of CONSTRUCT. Used by EDIT4F once at the beginning of
	  a find operation that also specifies replacement -
	  i.e. an R command. Converts an atom or string containing alt modes into a list of the character sequences, e.g. if X
	  is $ABC$DEF$ then the value of EDITFPAT1 is ($ $ ABC $ DEF $) (The first $ is merely a flag.))


    (COND
      ((OR (LITATOM X)
	   (STRINGP X))
	(COND
	  [(STRPOS (QUOTE )
		   X)
	    (CONS (QUOTE )
		  (PROG ((N 1)
			 (NC (NCHARS X))
			 VAL)
		    LP  (SETQ VAL (CONS [COND
					  ((EQ (NTHCHARCODE X N)
					       (CHARCODE ESCAPE))
					    (QUOTE ))
					  (T (SUBSTRING X N (SETQ N
							  (SUB1 (OR (STRPOS "" X N)
								    0]
					VAL))
		        [COND
			  ((OR (EQ N -1)
			       (IGREATERP (SETQ N (ADD1 N))
					  NC))
			    (RETURN (DREVERSE VAL]
		        (GO LP]
	  (T X)))
      [(LISTP X)
	(CONS (EDITFPAT1 (CAR X))
	      (EDITFPAT1 (CDR X]
      (T X])

(EDITFINDP
  [LAMBDA (X PAT FLG)

          (* Allows the user to use the edit find operation as a predicate without 
	  being inside the editor or doing any conses.)


    (PROG ((N 1)
	   CHANGEFLG LASTAIL TOPLVL FF)
          (AND (NULL FLG)
	       (SETQ PAT (EDITFPAT PAT T)))
          (RETURN (OR (EDIT4E PAT X)
		      (EDIT4F1 PAT X MAXLEVEL])

(FEDITFINDP
  [LAMBDA (LST AT)                 (* lmm "26-JUL-83 20:55")
    (OR (EQ AT LST)
	(AND (LISTP LST)
	     (OR (FEDITFINDP (CAR LST)
			     AT)
		 (FEDITFINDP (CDR LST)
			     AT])

(EDITBELOW
  [LAMBDA (PLACE DEPTH)            (* See comment in EDITCOML)
    (PROG ((L0 (PROG ((L L)
		      (LCFLG (QUOTE ←)))
		     (EDITCOM PLACE)
		     (RETURN L)))
	   L1 N)
          (COND
	    ((NULL DEPTH)
	      (SETQ COM C)
	      (SETQ DEPTH 1))
	    ((MINUSP (SETQ COM (EVAL DEPTH)))
                                   (* If anything goes wrong from hhe on, the error message shuld print the value of
				   DEPTH.)
	      (ERROR!))
	    (T (SETQ DEPTH COM)))
          (SETQ L1 (REVERSE L))
          (SETQ L0 (FMEMB (CAR L0)
			  L1))
      LP  [COND
	    ((NULL L0)
	      (ERROR!))
	    [(ZEROP DEPTH)
	      (FRPLACD L0)
	      (SETQ UNFIND L)
	      (RETURN (SETQ L (DREVERSE L1]
	    ((NOT (TAILP (CADR L0)
			 (CAR L0)))
	      (SETQ DEPTH (SUB1 DEPTH]
          (SETQ L0 (CDR L0))
          (GO LP])

(EDITBF
  [LAMBDA (PAT N)
    (PROG ((LL L)
	   X Y (FF (CONS)))

          (* Same as EDIT4F, except searches in reverse printorder.
	  If N is T (or at top level) search includes current expression, otherwise 
	  starts with first expression that would be printed before the current 
	  expression.)


          (SETQ COM PAT)
          (SETQ PAT (EDITFPAT PAT))
          (COND
	    ((OR (NLISTP (CAR LL))
		 (AND (NULL N)
		      (CDR LL)))                            (* Do not examine current 
							    expression.)
	      (GO LP1)))
      LP  [COND
	    ((EDITBF1 PAT (CAR LL)
		      MAXLEVEL Y)
	      (SETQ UNFIND L)
	      (RETURN (CAR (SETQ L (NCONC (CAR FF)
					  (COND
					    ((EQ (CAR LL)
						 (CADR FF))
					      (CDR LL))
					    (T LL]
      LP1 (SETQ X (CAR LL))
          (COND
	    ((NULL (SETQ LL (CDR LL)))
	      (ERROR!))
	    ([OR (SETQ Y (MEMB X (CAR LL)))
		 (SETQ Y (TAILP X (CAR LL]
	      (GO LP)))
          (GO LP1])

(EDITBF1
  [LAMBDA (PAT X LVL TAIL)
    (PROG [Y XX (...PAT (AND (LISTP PAT)
			     (EQ (CAR PAT)
				 (QUOTE ...]
          (AND (LISTP X)
	       (EQ (CAR X)
		   CLISPTRANFLG)
	       (SETQ XX X)
	       (SETQ X (CDDR X)))
      LP  [COND
	    ((AND LVL (NOT (IGREATERP LVL 0)))
	      (PRIN1 (QUOTE "maxlevel exceeded.
")
		     T)
	      (RETURN NIL))
	    ((EQ TAIL X)
	      (RETURN (COND
			((AND (NOT ...PAT)
			      (EDIT4E PAT X))

          (* Only compare with X after you have searched inside it, e.g. if backing up
	  to (COND -- (COND --)) should find inner COND.)


			  (TCONC FF X]
          (SETQ Y X)
      LP1 (COND
	    ([NULL (OR (EQ (CDR Y)
			   TAIL)
		       (NLISTP (CDR Y]

          (* TAIL is where you were last time. Go until you find the tail before it.)


	      (SETQ Y (CDR Y))
	      (GO LP1)))
          (SETQ TAIL Y)                                     (* Y is a tail of X, TAIL is CDR of 
							    Y.)
          (COND
	    ((AND PAT (CDR TAIL)
		  (NLISTP (CDR TAIL))
		  (EDIT4E PAT (CDR TAIL)))                  (* Atomic tail.)
	      (SETQ TAIL (CDR TAIL)))
	    ((AND ...PAT (EDIT4E (CDR PAT)
				 (CDR TAIL)))
	      (SETQ TAIL (CDR TAIL)))
	    ([AND (LISTP (CAR TAIL))
		  (EDITBF1 PAT (CAR TAIL)
			   (AND LVL (SUB1 LVL]

          (* Descend first before comparing 
							    with outer one.)


	      (SETQ TAIL (CAR TAIL)))
	    [(AND (NOT ...PAT)
		  (EDIT4E PAT (CAR TAIL)))
	      (COND
		((OR (NULL UPFINDFLG)
		     (LISTP (CAR TAIL)))
		  (SETQ LASTAIL TAIL)
		  (SETQ TAIL (CAR TAIL]
	    (T (AND LVL (SETQ LVL (SUB1 LVL)))
	       (GO LP)))
          (AND XX (EQ TAIL (CDDR XX))
	       (SETQ TAIL XX))
          (COND
	    ([NOT (AND TAIL (EQ TAIL (CADR FF]
	      (TCONC FF TAIL)))
          (RETURN FF])

(EDITNTH
  [LAMBDA (X N)

          (* If N is non-numeric, EDITELT is called, so that one can give commands 
	  such as (BI COND SETQ) meaning do a BI starting at the element containing 
	  COND up to the one containing SETQ.)


    (PROG (TEM)
          [COND
	    ((NLISTP X)
	      (ERROR!))
	    ((EQ (CAR X)
		 CLISPTRANFLG)
	      (SETQ X (CDDR X]
          (RETURN (COND
		    ((NOT (NUMBERP N))

          (* Normally EDITELT returns the element of this level list containing N.
	  However, if N is atomic and ends with an alt-mode, it will fail the first 
	  FMEMB, and EDITELT will return the tail of the list, so the second MEMB will
	  fail. This is the reason for the TAILP.)


		      (OR (MEMB N X)
			  (MEMB (SETQ N (EDITELT N (LIST X)))
				X)
			  (TAILP N X)))
		    ((ZEROP N)
		      (ERROR!))
		    ([SETQ TEM (COND
			  ((MINUSP N)
			    (NLEFT X (IMINUS N)))
			  (T (NTH X N]
		      TEM)
		    (T (SETQ COM N)
		       (ERROR!])

(BPNT
  [LAMBDA (X)                                               (* wt: 14-MAY-76 18 42)
    (PROG (Y N Z)
          [COND
	    ((ZEROP (CAR X))
	      (SETQ Y (CAR L))
	      (SETQ Z (CADR L)))
	    (T (SETQ Y (CAR (EDITNTH (CAR L)
				     (CAR X]
          [COND
	    ((NULL (CDR X))
	      (SETQ N 1))
	    ([NULL (NUMBERP (SETQ N (CADR X]
	      (ERROR!))
	    ((MINUSP N)
	      (SETQ N (ADD1 N)))
	    (T                                              (* Makes (P 0 N) have same effect as it did in old 
							    system.)
	       (SETQ N (SUB1 N]
          (RETURN (BPNT0 Y T N (OR (CADDR X)
				   20)
			 Z])

(BPNT0
  [LAMBDA (X FILE CARLVL CDRLVL TAIL)
                                   (* wt: 11-MAY-76 18 0)
    (COND
      ((NULL (NLSETQ (LVLPRINT X FILE CARLVL CDRLVL TAIL)))
	(SETQ COM NIL)
	(ERROR!])

(EDIT.RI
  [LAMBDA (M N X)
    (PROG (A B)
          (SETQ A (EDITNTH X M))
          (SETQ B (EDITNTH (CAR A)
			   N))
          (COND
	    ((OR (NULL A)
		 (NULL B))
	      (ERROR!)))
          [PROG ((L (CONS (CAR A)
			  L)))

          (* The only reason for this is so that EDITSMASH will also check (CAR a) for clisp translation.
	  Note that EDIT.RI is the only command which lets you change something INSIDE of (CAR L) (The R command for xample 
	  is rebinding L as it goes down.))


	        (MAPC (CDR B)
		      (FUNCTION EDITSMASH1))
	        (EDITSMASH1 (CAR A))
	        (EDITSMASH A (CAR A)
			   (EDITNCONC (CDR B)
				      (CDR A]
          (EDITSMASH B (CAR B])

(EDIT.RO
  [LAMBDA (N X)
    (SETQ X (EDITNTH X N))
    (COND
      ((OR (NULL X)
	   (NLISTP (CAR X)))
	(ERROR!)))
    (EDITSMASH (SETQ N (LAST (CAR X)))
	       (CAR N)
	       (CDR X))
    (EDITSMASH X (CAR X))
    (EDITSMASH1 (CAR X])

(EDIT.LI
  [LAMBDA (N X)
    (SETQ X (EDITNTH X N))
    (COND
      ((NULL X)
	(ERROR!)))
    (EDITSMASH X (CONS (CAR X)
		       (CDR X)))
    (EDITSMASH1 (CAR X))
    (EDITSMASH1 (CAR X])

(EDIT.LO
  [LAMBDA (N X)
    (SETQ X (EDITNTH X N))
    (COND
      ((OR (NULL X)
	   (NLISTP (CAR X)))
	(ERROR!)))
    (EDITSMASH X (CAAR X)
	       (CDAR X))
    (MAPC X (FUNCTION EDITSMASH1])

(EDIT.BI
  [LAMBDA (M N X)                  (* lmm "26-JUL-83 20:51")
    (PROG (A B)
          (OR N (SETQ N M))
          [SETQ B (CDR (SETQ A (EDITNTH X N]
          (SETQ X (EDITNTH X M))
          (COND
	    ((AND A (TAILP A X))
	      (EDITSMASH A (CAR A))
	      (EDITSMASH X (CONS (CAR X)
				 (CDR X))
			 B)
	      (EDITSMASH1 (CAR X)))
	    (T (ERROR!])

(EDIT.BO
  [LAMBDA (N X)
    (SETQ X (EDITNTH X N))
    (COND
      ((NLISTP (CAR X))
	(ERROR!)))
    (EDITSMASH X (CAAR X)
	       (EDITNCONC (CDAR X)
			  (CDR X)))
    (EDITSMASH1 (CAR X])
)

(RPAQ? EDITRDTBL (COPYREADTABLE T))

(RPAQQ DUMMY-EDIT-FUNCTION-BODY [LAMBDA (ARGS ...)
					BODY])

(ADDTOVAR USERMACROS [EDIT NIL (E (EDIT (COND ((LISTP (##))
					       (CAR (##)))
					      (T (##])
[DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY
(BLOCK: EDITBLOCK EDITL EDITL0 EDITL1 UNDOEDITL EDITCOM EDITCOMA EDITCOML EDITMAC EDITCOMS EDIT!UNDO 
	UNDOEDITCOM UNDOEDITCOM1 EDITCOM1 EDITSMASH EDITSMASH1 EDITNCONC EDITAPPEND EDIT1F EDIT2F 
	EDITNTH BPNT BPNT0 EDIT.RI EDIT.RO EDIT.LI EDIT.LO EDIT.BI EDIT.BO EDITDEFAULT EDITDEFAULT1 
	## EDUP EDIT* EDOR EDRPT EDLOC EDLOCL EDIT: EDITMBD EDITXTR EDITELT EDITCONT EDITSW EDITMV 
	EDITTO EDITBELOW EDITRAN EDITSAVE EDITSAVE1 EDITH (ENTRIES EDITL EDITL0 ## UNDOEDITL BPNT0 
								   EDITCONT EDLOCL)
	(SPECVARS L ATM COM LCFLG #1 #2 #3 UNDOLST UNDOLST1 LASTAIL MARKLST UNFIND LASTP1 LASTP2 COMS 
		  EDITCHANGES EDITHIST0 LISPXID)
	(RETFNS EDITL0 EDITL1)
	(BLKAPPLYFNS EDIT: EDITMBD EDITMV EDITXTR EDITSW)
	(BLKLIBRARY NTH LAST MEMB NLEFT)
	(NOLINKFNS PRINTDEF EDITRACEFN EDITUSERFN)
	(LOCALFREEVARS FINDFLAG EDITHIST UNDOLST1 COM L L0 COM0 UNDOLST EDITLFLG ATM MARKLST 
		       EDITHIST0 UNFIND TYPEIN LCFLG LASTP1 LASTP2 LASTAIL COPYFLG ORIGFLG COMS TOFLG 
		       C LVL EDITCHANGES EDITLISPFLG)
	(GLOBALVARS EDITCALLS P.A.STATS EDITUNDOSTATS EDITUNDOSAVES SPELLSTATS1 P.A.STATS EDITUSERFN 
		    EDITIME USERHANDLE DONTSAVEHISTORYCOMS COMPACTHISTORYCOMS EDITEVALSTATS MAXLOOP 
		    EDITCOMSL EDITCOMSA DWIMFLG CLISPTRANFLG EDITOPS HISTORYCOMS REREADFLG HISTSTR3 
		    EDITRDTBL EDITHISTORY HISTSTR0 READBUF LISPXHISTORY LISPXBUFS EDITRACEFN 
		    EDITMACROS USERMACROS CLISPARRAY CHANGESARRAY COMMENTFLG **COMMENT**FLG 
		    EDITESTATS EDITISTATS PRETTYFLG EDITSMASHUSERFN))
(BLOCK: EDITFINDBLOCK EDIT4E EDIT4E1 EDITQF EDIT4F EDITFPAT EDITFPAT1 EDIT4F1 EDIT4F2 EDIT4F3 
	EDITSMASH EDITSMASH1 EDITFINDP EDITBF EDITBF1 ESUBST
	(ENTRIES EDIT4E EDIT4E1 EDITQF EDIT4F EDITFPAT EDITFINDP EDITBF ESUBST)
	(LOCALFREEVARS C3 CHANGEFLG N TOPLVL FF NEWFLG FLG)
	(GLOBALVARS EDITUNDOSAVES CHCONLST2 EDITQUIETFLG CHCONLST1 MAXLEVEL UPFINDFLG CLISPTRANFLG 
		    CHANGESARRAY CLISPARRAY EDITHISTORY)
	(SPECVARS ATM L COM UNFIND LASTAIL UNDOLST1 EDITCHANGES))
(BLOCK: NIL EDITF EDITFA EDITFB EDITV EDITP EDITE (SPECVARS EDITCHANGES EDITFN))
(BLOCK: NIL ESUBST1 EDITFNS EDITLOADFNS? UNSAVEBLOCK? (GLOBALVARS FILELST FILEPKGFLG DWIMFLG DWIMWAIT 
								  DWIMLOADFNSFLG)
	(NOLINKFNS WHEREIS))
]
(DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY COMPILERVARS 

(ADDTOVAR NLAMA EDITP EDITV EDITF EDITFNS ##)

(ADDTOVAR NLAML EDITF2)

(ADDTOVAR LAMA )
)
(PUTPROPS EDIT COPYRIGHT ("Xerox Corporation" T 1983 1984 1985))
(DECLARE: DONTCOPY
  (FILEMAP (NIL (3867 109251 (## 3877 . 4435) (EDIT* 4437 . 5119) (EDIT: 5121 . 6367) (EDITDEFAULT 6369
 . 12072) (EDITDEFAULT1 12074 . 12298) (EDITFNS 12300 . 13246) (EDITH 13248 . 16490) (EDITRAN 16492 . 
17644) (EDITTO 17646 . 18648) (EDITXTR 18650 . 19630) (EDLOC 19632 . 20797) (EDLOCL 20799 . 20936) (
EDOR 20938 . 21253) (EDRPT 21255 . 21868) (EDUP 21870 . 22844) (ESUBST 22846 . 23592) (ESUBST1 23594
 . 24053) (EDITF 24055 . 24519) (EDIT 24521 . 26671) (EDITFERROR 26673 . 27771) (EDITFA 27773 . 28484)
 (EDITFB 28486 . 30735) (EDITLOADFNS? 30737 . 33341) (EDITE 33343 . 35886) (EDITELT 35888 . 36066) (
UNSAVEBLOCK? 36068 . 36986) (EDITF1 36988 . 37223) (EDITF2 37225 . 37801) (EDITV 37803 . 38466) (EDITP
 38468 . 38968) (EDITL 38970 . 41921) (EDITL0 41923 . 43364) (EDITL1 43366 . 46287) (EDITL2 46289 . 
46616) (UNDOEDITL 46618 . 47164) (EDITCOM 47166 . 48072) (EDITCOMA 48074 . 57223) (EDITCOML 57225 . 
64523) (EDITCONT 64525 . 65387) (EDITMAC 65389 . 65682) (EDITMBD 65684 . 66271) (EDITMV 66273 . 68692)
 (EDITCOMS 68694 . 69251) (EDIT!UNDO 69253 . 69922) (UNDOEDITCOM 69924 . 71228) (UNDOEDITCOM1 71230 . 
71902) (EDITCOM1 71904 . 73526) (EDITSAVE 73528 . 74796) (EDITSAVE1 74798 . 75547) (EDITSMASH 75549 . 
77370) (EDITSMASH1 77372 . 78138) (EDITSW 78140 . 78452) (EDITNCONC 78454 . 78670) (EDITAPPEND 78672
 . 79177) (EDIT1F 79179 . 79847) (EDIT2F 79849 . 82888) (EDIT4E 82890 . 84810) (EDIT4E1 84812 . 87290)
 (EDITQF 87292 . 87638) (EDIT4F 87640 . 92444) (EDIT4F1 92446 . 96285) (EDIT4F2 96287 . 97752) (
EDIT4F3 97754 . 98716) (EDITFPAT 98718 . 100007) (EDITFPAT1 100009 . 101131) (EDITFINDP 101133 . 
101507) (FEDITFINDP 101509 . 101717) (EDITBELOW 101719 . 102562) (EDITBF 102564 . 103560) (EDITBF1 
103562 . 105390) (EDITNTH 105392 . 106387) (BPNT 106389 . 107029) (BPNT0 107031 . 107238) (EDIT.RI 
107240 . 107963) (EDIT.RO 107965 . 108223) (EDIT.LI 108225 . 108434) (EDIT.LO 108436 . 108642) (
EDIT.BI 108644 . 109036) (EDIT.BO 109038 . 109249)))))
STOP