--- gforth/ekey.fs	2000/09/23 15:46:52	1.3
+++ gforth/ekey.fs	2002/06/03 09:12:10	1.7
@@ -41,9 +41,10 @@ keycode k-up
 keycode k-down
 keycode k-home
 keycode k-end
-\ keycode k-prior \ note: captured by xterm
-\ keycode k-next \ note: captured by xterm
+keycode k-prior \ note: captured by xterm
+keycode k-next \ note: captured by xterm
 keycode k-insert \ not in pfe
+127 constant k-delete \ not an escape sequence on my xterm, so use ASCII code
 \ function/keypad keys
 keycode k1
 keycode k2
@@ -57,20 +58,20 @@ keycode k9
 keycode k10
 keycode k11 \ not in pfe
 keycode k12 \ not in pfe
-\ shifted function/keypad keys have the same key sequences (in xterm)
-\ and pfe gives the same keycodes; so what are these keycodes good for?
-\ keycode s-k1
-\ keycode s-k2
-\ keycode s-k3
-\ keycode s-k4
-\ keycode s-k5
-\ keycode s-k6
-\ keycode s-k7
-\ keycode s-k8
-\ keycode s-k9
-\ keycode s-k10
-\ keycode s-k11 \ not in pfe
-\ keycode s-k12 \ not in pfe
+\ shifted fuinction keys (don't work in xterm (same as unshifted, but
+\ s-k1..s-k8 work in the Linux console)
+keycode s-k1
+keycode s-k2
+keycode s-k3
+keycode s-k4
+keycode s-k5
+keycode s-k6
+keycode s-k7
+keycode s-k8
+keycode s-k9
+keycode s-k10
+keycode s-k11 \ not in pfe
+keycode s-k12 \ not in pfe
 
 \ helper word
 \ print a key sequence:
@@ -119,13 +120,14 @@ create ekey-buffer 8 chars allot
 27 constant #esc
 
 : esc-prefix ( -- u )
-    key ekey-buffered char-append-buffer
-    ekey-buffered 2@ esc-sequences search-wordlist
-    if
-	execute exit
-    else
-	ekey-buffered 2@ unkeys #esc
-    then ;
+    key? if
+	key ekey-buffered char-append-buffer
+	ekey-buffered 2@ esc-sequences search-wordlist
+	if
+	    execute exit
+	endif
+    endif
+    ekey-buffered 2@ unkeys #esc ;
 
 : esc-sequence ( xt addr u -- ; name execution: -- u ) recursive
     \ define key "name" and all prefixes
@@ -156,8 +158,8 @@ get-current esc-sequences set-current
 ' k-down	s" [B"	esc-sequence
 ' k-home	s" [H"	esc-sequence
 ' k-end		s" [F"	esc-sequence
-\ ' k-prior	s" [5~"	esc-sequence \ from linux console
-\ ' k-next	s" [6~"	esc-sequence \ from linux console
+' k-prior	s" [5~"	esc-sequence
+' k-next	s" [6~"	esc-sequence
 ' k-insert	s" [2~"	esc-sequence
 
 ' k1	s" OP"	esc-sequence
@@ -173,6 +175,26 @@ get-current esc-sequences set-current
 ' k11	s" [23~" esc-sequence
 ' k12	s" [24~" esc-sequence
 
+\ esc sequences from Linux console:
+
+' k1       s" [[A" esc-sequence
+' k2       s" [[B" esc-sequence
+' k3       s" [[C" esc-sequence
+' k4       s" [[D" esc-sequence
+' k5       s" [[E" esc-sequence
+' k-delete s" [3~" esc-sequence
+' k-home   s" [1~" esc-sequence
+' k-end    s" [4~" esc-sequence
+
+' s-k1 s" [25~" esc-sequence
+' s-k2 s" [26~" esc-sequence
+' s-k3 s" [28~" esc-sequence
+' s-k4 s" [29~" esc-sequence
+' s-k5 s" [31~" esc-sequence
+' s-k6 s" [32~" esc-sequence
+' s-k7 s" [33~" esc-sequence
+' s-k8 s" [34~" esc-sequence
+
 set-current
 [ENDIF]
 
@@ -189,37 +211,39 @@ set-current
 : ekey>char ( u -- u false | c true ) \ facility-ext e-key-to-char
     dup 256 u< ;
 
-: esc? ( -- flag ) recursive
-    key? 0=
-    if
-	false exit
-    then
-    key ekey-buffered char-append-buffer
-    ekey-buffered 2@ esc-sequences search-wordlist
-    if
-	['] esc-prefix =
-	if
-	    esc? exit
-	then
-    then
-    true ;
+' key? alias ekey? ( -- flag )
 
-: ekey? ( -- flag ) \ facility-ext e-key-question
-    \G Return @code{true} if a keyboard event is available (use
-    \G @code{ekey} to receive the event), @code{false} otherwise.
-    key?
-    if
-	key dup #esc =
-	if
-	    clear-ekey-buffer esc?
-	    ekey-buffered 2@ unkeys
-	else
-	    true
-	then
-	swap unkey
-    else
-	false
-    then ;
+\  : esc? ( -- flag ) recursive
+\      key? 0=
+\      if
+\  	false exit
+\      then
+\      key ekey-buffered char-append-buffer
+\      ekey-buffered 2@ esc-sequences search-wordlist
+\      if
+\  	['] esc-prefix =
+\  	if
+\  	    esc? exit
+\  	then
+\      then
+\      true ;
+
+\  : ekey? ( -- flag ) \ facility-ext e-key-question
+\      \G Return @code{true} if a keyboard event is available (use
+\      \G @code{ekey} to receive the event), @code{false} otherwise.
+\      key?
+\      if
+\  	key dup #esc =
+\  	if
+\  	    clear-ekey-buffer esc?
+\  	    ekey-buffered 2@ unkeys
+\  	else
+\  	    true
+\  	then
+\  	swap unkey
+\      else
+\  	false
+\      then ;
 
 \ : test-ekey?
 \     begin