VE: Add X

blk/107

@@ -1,4 +1,4 @@
-: F
+: _F ( F without _pln. used in VE )
     FBUF _type FBUF EDPOS @ _cpos ( a1 a2 )
     BEGIN
         C@+ ROT ( a2+1 c2 a1 ) C@+ ROT ( a2+1 a1+1 c1 c2 )
@@ -6,7 +6,5 @@
         TUCK C@ 0xd = ( a1 a2 f1 )
         OVER BLK) = OR ( a1 a2 f1|f2 )
     UNTIL
-    DUP BLK) < IF BLK( - FBUF + -^ EDPOS ! THEN
-    EDPOS @ 64 / _pln DROP
-;
-
+    DUP BLK) < IF BLK( - FBUF + -^ EDPOS ! THEN DROP ;
+: F _F EDPOS @ 64 / _pln ;

blk/108

@@ -3,7 +3,7 @@
 : _rbufsz ( size of linebuf to the right of curpos )
     EDPOS @ 64 MOD 63 -^ ;
 : i COMPILE I ; IMMEDIATE ( save overshadowed )
-: I
+: _I ( I without _pln. used in VE )
     IBUF _type _rbufsz IBUF _blen 2DUP > IF
         TUCK - ( ilen chars-to-move )
         SWAP EDPOS @ _cpos 2DUP + ( ctm ilen a a+ilen )
@@ -11,6 +11,5 @@
         NIP ( ilen )
     ELSE DROP ( ilen becomes rbuffsize )
     THEN
-    DUP IBUF EDPOS @ _cpos ROT MOVE ( ilen )
-    BLK!! EDPOS +! EDPOS @ 64 / _pln
-;
+    DUP IBUF EDPOS @ _cpos ROT MOVE ( ilen ) EDPOS +! BLK!! ;
+: I _I EDPOS @ 64 / _pln ;

blk/109

@@ -1,9 +1,9 @@
-: E
-    FBUF _blen EDPOS @ _cpos 2DUP + ( l a1 a1+l )
+: X ( len -- , delete len chars after curpos )
+    EDPOS @ _cpos 2DUP + ( l a1 a1+l )
     SWAP _rbufsz MOVE ( l )
     ( get to next line - l )
     DUP EDPOS @ 0xffc0 AND 0x40 + -^ _cpos ( l a )
     SWAP 0 FILL
-    EDPOS @ 64 / _pln
-;
+    EDPOS @ 64 / _pln ;
+: E FBUF _blen X ;
 

blk/122

@@ -2,8 +2,10 @@
 
 'w' moves forward by a word. 'W' moves backward by a word.
 
-'I' inserts text by calling the "I" command from the Block
-editor.
+'I', 'F' and 'E' invoke the corresponding command from the
+Block Editor (B100). Refer to documentation there.
+
+'X' deletes "modifier" characters following cursor.
 
 'R' goes into replace mode at current cursor position.
 Following keystrokes replace current character and advance

blk/127

@@ -6,7 +6,10 @@
 : $g ACC @ selblk 0acc ;
 : $[ BLK> @ acc@ - selblk ;
 : $] BLK> @ acc@ + selblk ;
-: $I mode! 'I' EMIT 3 1 AT-XY I contents mode! SPC ;
+: $I mode! 'I' EMIT 3 1 AT-XY _I contents mode! SPC ;
+: $F mode! 'F' EMIT 3 2 AT-XY _F setpos mode! SPC ;
+: $E E contents ;
+: $X acc@ X contents ;
 : $h -1 cmv ; : $l 1 cmv ; : $k -64 cmv ; : $j 64 cmv ;
 : $H 0acc EDPOS @ 0x3c0 AND EDPOS ! ;
 : $L 0acc EDPOS @ 0x3f OR EDPOS ! ;