How to set --headless=false?

[wesgt]

Does anyone know how to set headless=false?
Because I want to set --init='some_init_file' to executed a command by the terminal client.
This command is similar to 'config max-string-len 99999'. it's order to extend the variable length.
And I saw that the Delve code has follow condition.

if Headless && (InitFile != "") {
	fmt.Fprint(os.Stderr, "Warning: init file ignored\n")
}

And go-debug code is

dlvArgs.push(
  '--headless=true',
  `--listen=${host}:${port}`,
  '--api-version=2',
  `--backend=${backend}`
)

thx~