/// Whether the source string is comes from `println!` as opposed to `format!` or `print!`
append_newline: bool,
/// Whether this formatting string is a literal or it comes from a macro.
- is_literal: bool,
+ pub is_literal: bool,
/// Start position of the current line.
cur_line_start: usize,
/// Start and end byte offset of every line of the format string. Excludes