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jinja: treat a null left operand of in as a plain lookup (#28620)

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Templates that default an optional variable to none and then test its
membership in a map hit an error, while the same expression is a normal
lookup returning false in Jinja. The undefined counterpart of this case
was already handled just above.
This commit is contained in:
Pascal
2026-09-09 10:08:27 +03:00
committed by GitHub
parent df750f76bb
commit b31b71f3a0
2 changed files with 24 additions and 0 deletions
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common/jinja/runtime.cpp
+6
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@@ -167,6 +167,12 @@ value binary_expression::execute_impl(context & ctx) {
}
throw std::runtime_error("Cannot perform operation " + op.value + " on undefined values");
} else if (is_val<value_none>(left_val) || is_val<value_none>(right_val)) {
if (!is_val<value_none>(right_val) && (op.value == "in" || op.value == "not in")) {
// case: none in {'low': 1}
// A null left operand is looked up like any other value.
bool member = test_is_in();
return mk_val<value_bool>(op.value == "in" ? member : !member);
}
if (op.value == "+" || op.value == "~") {
value res = mk_val<value_undefined>();
if (workaround_concat_null_with_str(res)) {