fixes

src/fh_builtins_meta.c

@@ -911,6 +911,16 @@ static enum fh_error w_parse_name(struct fh_thread_s *fh, const struct fh_word_s
   return FH_OK;
 }
 
+static enum fh_error w_refill(struct fh_thread_s *fh, const struct fh_word_s *w)
+{
+  (void) w;
+  enum fh_error rv;
+  bool suc = fh->input->refill_input_buffer(fh, fh->input);
+  if (fh->input->source_id == -1) suc = false; // string always says it can't refill
+  TRY(ds_push(fh, TOBOOL(suc)));
+  return FH_OK;
+}
+
 const struct name_and_handler fh_builtins_meta[] = {
     {"depth",        w_depth,         0, 0},
     {"unused",       w_unused,        0, 0},
@@ -957,5 +967,6 @@ const struct name_and_handler fh_builtins_meta[] = {
     {"evaluate",     w_evaluate,      0, 0},
     {"included",     w_included,      0, 0},
     {"include",      w_include,       0, 0},
+    {"refill",       w_refill,        0, 0},
     { /* end marker */ }
 };

testfiles/combinedtest.f

@@ -1788,7 +1788,6 @@ TESTING REFILL SOURCE-ID
 \ REFILL and SOURCE-ID from the user input device can't be tested from a file,
 \ can only be tested from a string via EVALUATE
 
-1 debug
 T{ : RF1  S" REFILL" EVALUATE ; RF1 -> FALSE }T
 T{ : SID1  S" SOURCE-ID" EVALUATE ; SID1 -> -1 }T