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Non-matched optional capture group should be null and offset -1 (#3238)

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Fixes #3093
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Mattias Wadman authored and GitHub committed 2025-02-04 19:18:58 +01:00
1 parent d0adcbfebb
commit 2755664a8e
2 files changed
+34 -3
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src/builtin.c
+7 -2
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@@ -1006,8 +1006,13 @@ static jv f_match(jq_state *jq, jv input, jv regex, jv modifiers, jv testmode) {
jv captures = jv_array();
for (int i = 1; i < region->num_regs; ++i) {
jv cap = jv_object();
cap = jv_object_set(cap, jv_string("offset"), jv_number(idx));
cap = jv_object_set(cap, jv_string("string"), jv_string(""));
if (region->beg[i] == -1) {
cap = jv_object_set(cap, jv_string("offset"), jv_number(-1));
cap = jv_object_set(cap, jv_string("string"), jv_null());
} else {
cap = jv_object_set(cap, jv_string("offset"), jv_number(idx));
cap = jv_object_set(cap, jv_string("string"), jv_string(""));
}
cap = jv_object_set(cap, jv_string("length"), jv_number(0));
cap = jv_object_set(cap, jv_string("name"), jv_null());
captures = jv_array_append(captures, cap);