replace_string_in_file deletes \n

[hediet4]

# Tool Call - toolu_011FY4XuVnQDXGtUKgGJUBva__vscode-1750360460889

## Request
~~~
id   : toolu_011FY4XuVnQDXGtUKgGJUBva__vscode-1750360460889
tool : replace_string_in_file
args : {
  "filePath": "d:\\dev\\2025\\web-widgets\\.vscode\\launch.json",
  "newString": "		{
			\"name\": \"Debug Main Process\",
			\"type\": \"node\",
			\"request\": \"launch\",
			\"cwd\": \"${workspaceFolder}/app\",
			\"runtimeExecutable\": \"${workspaceFolder}/node_modules/.bin/electron\",
			\"windows\": {
				\"runtimeExecutable\": \"${workspaceFolder}/node_modules/.bin/electron.cmd\"
			},
			\"args\": [\".\", \"--appDataDir=test-data\"],
			\"outputCapture\": \"std\",
			\"runtimeArgs\": [\"--remote-debugging-port=9222\"],
			\"env\": {
				\"PATH\": \"${env:USERPROFILE}\\\\AppData\\\\Roaming\\\\fnm;${env:PATH}\"
			}
		},",
  "oldString": "		{
			\"name\": \"Debug Main Process\",
			\"type\": \"node\",
			\"request\": \"launch\",
			\"cwd\": \"${workspaceFolder}/app\",
			\"runtimeExecutable\": \"${workspaceFolder}/node_modules/.bin/electron\",
			\"windows\": {
				\"runtimeExecutable\": \"${workspaceFolder}/node_modules/.bin/electron.cmd\"
			},
			\"args\": [\".\", \"--appDataDir=test-data\"],
			\"outputCapture\": \"std\",
			\"runtimeArgs\": [\"--remote-debugging-port=9222\"]
		},"
}
~~~
## Response
~~~
The following files were successfully edited:
d:\dev\2025\web-widgets\.vscode\launch.json

~~~

This resulted in this edit.

[roblourens]

This is likely microsoft/vscode-copilot-release#9753