Bad snippets expansion when curly braces are used in regex

[nvlang]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.76.0
• OS Version: macOS Ventura 13.2.1

Steps to Reproduce:

1. Create global snippets file with the following contents:

{
	"works": {
		"prefix": "works",
		"body": [
			"${TM_CURRENT_LINE/(^#.*)|(^[^#].*)/${1:+(comment)}${2:+(code)}/}"
		],
		"scope": "plaintext"
	},
	"doesn't work": {
		"prefix": "doesn't work",
		"body": [
			"${TM_CURRENT_LINE/(^#.*)|(^[^#].*)/${1:+{comment}}${2:+{code}}/}"
		],
		"scope": "plaintext"
	}
}

2. Create plain text file, e.g. test.txt
3. Autocomplete each of the following lines:

works
# works
doesn't work
# doesn't work

4. Result:

(code)
# (comment)
}{code}
# {comment}}

5. Expected result:

(code)
# (comment)
{code}
# {comment}

[jrieken]

@nvlang Please try escaping the "inner" } character with backslash, e.g ${TM_CURRENT_LINE/(^#.*)|(^[^#].*)/${1:+{comment\\}}${2:+{code\\}}/}. Note that multiple backslashes are needed because backslashes in JSON need to be encoded as well

[nvlang]

My bad, I didn't realize asymmetric escaping was a thing. It works as expected when escaped like you described. Thanks!