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-rw-r--r--src/eval.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/eval.c b/src/eval.c
index 8563aa6d79..815d13d42a 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -4276,7 +4276,7 @@ eval9(
return FAIL;
end_leader = *arg;
- if (**arg == '.' && (!isdigit(*(*arg + 1)) || in_old_script(2)))
+ if (**arg == '.' && (!SAFE_isdigit(*(*arg + 1)) || in_old_script(2)))
{
semsg(_(e_invalid_expression_str), *arg);
++*arg;