X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?a=blobdiff_plain;f=defer-is.4th;h=3949d0cca3480c4fc2583de5b132f6373120ab81;hb=9f67194788cd9f6b8b576e31ecb7f3059648a659;hp=07f134264d32612fe362f181c43b09059c07a67e;hpb=385421e5768281c250e22ac5d7ab8da026dea86c;p=scheme.forth.jl.git

diff --git a/defer-is.4th b/defer-is.4th
index 07f1342..3949d0c 100644
--- a/defer-is.4th
+++ b/defer-is.4th
@@ -1,4 +1,4 @@
-\ Add words supporting deferred execution
+\ Words supporting deferred execution
 
 : abort-defer
     ." Tried to execute undefined deferred word." cr abort ;
@@ -33,3 +33,12 @@ hide abort-defer
     0 ,
     here docol ,
     [compile] ] ;
+
+
+\ Need this for tail call optimization
+
+: goto ( cfa -- )
+    R> drop execute ;
+
+: goto-prime ( cfa -- )
+    R> R> 2drop execute ;