--- gforth/history.fs	1994/10/18 15:57:17	1.1
+++ gforth/history.fs	1994/11/15 15:55:37	1.4
@@ -15,6 +15,11 @@
 
 s" gforth.history" get-history
 
+: history-cold  Defers 'cold
+  s" gforth.history" get-history ;
+
+' history-cold IS 'cold
+
 \ moving in history file                               16oct94py
 
 : clear-line ( max span addr pos1 -- max addr )
@@ -36,12 +41,12 @@ s" gforth.history" get-history
 
 : prev-line  ( max span addr pos1 -- max span addr pos2 false )
   clear-line over 2 + negate s>d backward^ 2@ d+ 0. dmax
-  history reposition-file throw  0.
-  BEGIN   2over swap history read-line throw nip  WHILE
-          history file-position throw
-	  2dup backward^ 2@ d<  WHILE  2swap 2drop
-  REPEAT  2drop  THEN
-  history reposition-file throw get-line 0 ;
+  2dup history reposition-file throw
+  BEGIN   2over swap history read-line throw  WHILE
+          >r history file-position throw
+	  2dup backward^ 2@ d<  WHILE  2swap 2drop rdrop
+  REPEAT  ELSE  >r history file-position throw  THEN
+  forward^ 2!  backward^ 2!  r> tuck 2dup type 0 ;
 
 : ctrl  ( "<char>" -- ctrl-code )
   char [char] @ - postpone Literal ; immediate
@@ -75,18 +80,19 @@ Create prefix-found  0 , 0 ,
   IF  r> char+ capscomp 0<=  EXIT  THEN
   nip r> c@ $1F and < ;
 
-: search-prefix  ( addr len1 -- suffix len2 )
-  context @ @  0 >r
-  BEGIN  dup  WHILE
-         >r dup r@ cell+ c@ $1F and <=
-	 IF  2dup r@ cell+ char+ capscomp  0=
-	     IF  r> dup r@ word-lex
-		 IF  dup prefix-found @ word-lex
-		     0>= IF  rdrop dup >r  THEN
-		 THEN >r
-	     THEN
-	 THEN  r> @
-  REPEAT drop r> dup prefix-found ! ?dup
+: search-prefix  ( addr len1 -- suffix len2 )  0 >r  context
+  BEGIN  BEGIN  dup @ over  cell - @ =  WHILE  cell -  REPEAT
+         dup >r -rot r> @ @
+         BEGIN  dup  WHILE  >r dup r@ cell+ c@ $1F and <=
+                IF  2dup r@ cell+ char+ capscomp  0=
+                    IF  r> dup r@ word-lex
+                        IF  dup prefix-found @ word-lex
+                            0>= IF  rdrop dup >r  THEN
+                        THEN >r
+                    THEN
+                THEN  r> @
+         REPEAT  drop rot cell -  dup vp u> 0=
+  UNTIL  drop r> dup prefix-found ! ?dup
   IF    cell+ count $1F and rot /string rot drop
   ELSE  2drop s" "  THEN  ;