Cannot use captured groups in replace when searching a regex that contains multiple lines (\n)

[SebLz]

• VSCode Version: 1.29.1
• OS Version: Win 7 x64

It seems that when we search in multiple files using a regex that contains the "\n" sequence, we cannot use the captured groups in the replace field:

Steps to Reproduce:

Multiline search with **non-**working replace ($1 & $2 are not replaced by their corresponding group)

Multiline search with working replace ($1 & $2 are correctly replaced by their corresponding group)

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Regex find and replace - unwanted group replacing during search (#58701)
• Multi-line copy replacement (#60924)
• Regex replace fails on group operation. (#40213)
• Highlight capturing groups when searching using regex (#45665)
• Error using 'sidebar find / replace' (#18194)

[SebLz]

This does not seem to be a duplicate of any of the bugs above. The example above contains a rather long regex, but even with very simple ones you can verify that the replace is broken as soon as a \n is in the regex:

• (.+) : $1 replace will work
• (.+)\n : $1 replace won't work

[roblourens]

This looks like a duplicate of #62980 - should be fixed in Insiders