Crazy (?) error in embedded interpreter using compiled syntax forms

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So I've got a Java program that I added SISC to; it's got a console and I
tied the input/output of that to a REPL running sisc-cli.  (This error
actually happens if I *don't* start the REPL, so I don't think the REPL is
the issue).

Separately, I've got a file foo.scm:

; srfi-1 is imported too for fold-right
(define-syntax flatten
 (syntax-rules ()
  ((_ list-of-lists)
   (fold-right append '() list-of-lists))))
; other non-syntax procedure definitions, including ones that use flatten...

I have compiled foo.scm to foo.scc by: (compile-file "foo.scm" "foo.scc")

In my Java initialization code, I do:  interpreter.eval"(load \"foo.scc\")".

In my REPL, I can use the procedures in foo.scc just fine.  If I say
something like (flatten) [a clear abuse of syntax], I get the normal error
of "Error: invalid syntax flatten".  But when I try to use it normally:

(flatten '((1 2) (3 4 5)))

I get this weird error message:

Error in memq: expected type pair, got '#3(syntax-object thread/priori...
...'.

Now, if I go and redefine the syntax form by hand in the REPL, it will work
fine.  It only seems to not like syntax defined in foo.scc.

So, my question is, what am I doing wrong?  Can you not compile syntax?
Should I load syntax from a .scm (non-compiled) file?  Am I not compiling
properly?  Maybe there's something I'm not setting up in my initial
environment properly that's screwing up the interpreter?

Thanks in advance for any ideas...

-- 
Mike J. Bell on gmail

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<div dir="ltr">So I&#39;ve got a Java program that I added SISC to; it&#39;s got a console and I tied the input/output of that to a REPL running sisc-cli.&nbsp; (This error actually happens if I *don&#39;t* start the REPL, so I don&#39;t think the REPL is the issue).<br>
<br>Separately, I&#39;ve got a file foo.scm:<br><br>; srfi-1 is imported too for fold-right<br>(define-syntax flatten<br>&nbsp;(syntax-rules ()<br>&nbsp; ((_ list-of-lists)<br>&nbsp;&nbsp; (fold-right append &#39;() list-of-lists))))<br>; other non-syntax procedure definitions, including ones that use flatten...<br>
<br>I have compiled foo.scm to foo.scc by: (compile-file &quot;foo.scm&quot; &quot;foo.scc&quot;)<br><br>In my Java initialization code, I do:&nbsp; interpreter.eval&quot;(load \&quot;foo.scc\&quot;)&quot;.<br><br>In my REPL, I can use the procedures in foo.scc just fine.&nbsp; If I say something like (flatten) [a clear abuse of syntax], I get the normal error of &quot;Error: invalid syntax flatten&quot;.&nbsp; But when I try to use it normally:<br>
<br>(flatten &#39;((1 2) (3 4 5)))<br><br>I get this weird error message:<br><br>Error in memq: expected type pair, got &#39;#3(syntax-object thread/priori... ...&#39;.<br><br>Now, if I go and redefine the syntax form by hand in the REPL, it will work fine.&nbsp; It only seems to not like syntax defined in foo.scc.<br>
<br>So, my question is, what am I doing wrong?&nbsp; Can you not compile syntax?&nbsp; Should I load syntax from a .scm (non-compiled) file?&nbsp; Am I not compiling properly?&nbsp; Maybe there&#39;s something I&#39;m not setting up in my initial environment properly that&#39;s screwing up the interpreter?<br>
<br>Thanks in advance for any ideas...<br clear="all"><br>-- <br>Mike J. Bell on gmail<br>
</div>

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