https://github.com/irdvo/ffl   
      
   ffl takes no consideration for case sensitive Forth's.   
   So it took some more time, but I made same progress.   
   However I got stuck upon the following:   
   ---------------------------------   
      
   [UNDEFINED] nil<>? [IF]   
      
   0 nil= [IF]   
   : nil<>?    ( addr -- false | addr true = If addr is nil, then return false,   
   else return address with true )   
     state @ IF   
       postpone ?dup   
     ELSE   
       ?dup   
     THEN   
    immediate   
   [ELSE]   
   : nil<>?   
     dup nil<> IF   
       true   
     ELSE   
       drop   
       false   
     THEN   
      
   [THEN   
      
   [THEN]   
   --------------------------------------------------   
      
   This combines a number of Forth stuff that I hate:   
   - Defining words by inspecting if it is undefined.   
   - an immediate word that it is smart   
   - a word that has variable output   
   - it contains ?DUP (bleh)   
   - it contains POSTPONE even postponing ?DUP   
      
   I can't progress because van Oudheusden uses this all over the place,   
   literally in every file, and I can't compile this piece of code.   
      
   ********** PROBLEM ************************   
   ciforth don't know the word `` [THEN ''.   
   *******************************************   
   [I checked it and it is really in irho/ffl.]   
      
   What gives? 40 years of software maintenance have taught me to never   
   ever try to remove a defect if the specification of the module   
   is not clear. You can't properly test it without a specification,   
   you know.   
      
   For what it is worth gforth gives the message:   
   [THEN   
   :1: Undefined word   
   >>>[THEN<<<   
      
   Can you help me?   
   --   
   Temu exploits Christians: (Disclaimer, only 10 apostles)   
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   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)