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-rw-r--r--eval.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/eval.c b/eval.c
index f63e01a1..1e6e48d5 100644
--- a/eval.c
+++ b/eval.c
@@ -3161,7 +3161,7 @@ val subst_vars(val forms, val env, val filter)
pa_123_1(func_n3(eval), env, form)),
rest(forms));
} else {
- str = fmt_cat(str, lit(" "));
+ str = fmt_cat(str, nil);
forms = cons(filter_string_tree(filter, str), rest(forms));
}