Function format_long_line 

pub fn format_long_line(
    entry: &Entry,
    colorizer: &Colorizer,
    config: &Config,
    widths: &LongWidths,
) -> String

Format a single long-listing line (no trailing newline).

When dired is enabled, name_offsets receives (start, end) byte offsets of the raw (pre-color) name within the returned line string.