Replace with regex: capturing group

[sekedus]

Describe the issue

Output result when replace using searchbox with regex are not the same as the result from JavaScript.

1. with searchbox: big_a1id_hide_a0aca1_fa2ag_a3-m

2. with JS: big_kid_hide_jack_flag_a3-m

const str = 'abcdefghijklm';
const rgx = /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)/i;
const rpl = "$2$9$7_$11$9$4_$8$9$4$5_$10$1$3$11_$6$12$1$7_$13-";
const result = str.replace(rgx, rpl);

// Output: big_kid_hide_jack_flag_a3-m
console.log(result);

Browser and platform

Google Chrome 128.0.6613.138 (64-bit)

Reproduction link

https://codemirror.net/try/?c=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

[marijnh]

Output result when replace using searchbox with regex are not the same as the result from JavaScript.

That is true. But I don't think our docs promise that this works the same anywhere. Did you run into a practical issue caused by this?