Function rustc_driver::args::arg_expand_all

pub fn arg_expand_all(
    early_dcx: &EarlyDiagCtxt,
    at_args: &[String],
) -> Result<Vec<String>, ErrorGuaranteed>

Replaces any @file arguments with the contents of file, with each line of file as a separate argument.

Note: This function doesn’t interpret argument 0 in any special way. If this function is intended to be used with command line arguments, argv[0] must be removed prior to calling it manually.