The many1 nom Parser Panics With multispace0 in Rust

Still learning how all this stuff works, but it seems like [TODO: Code shorthand span ] won't throw an error that [TODO: Code shorthand span ] needs to stop trying to process. I thought [TODO: Code shorthand span ] would stop on it's own error, but I don't think that's the case. I think it only stops it if gets an error from a child parser.

rust

use nom::character::complete::multispace0;
use nom::multi::many1;
use nom::IResult;

fn main() {
    let source = "  -- alfa\n-- bravo\n\ncharlie\ndelta\n\necho\n\n-- foxtrot\n\ngolf\nhotel";
    dbg!(sections(source).unwrap());
}

fn sections(source: &str) -> IResult<&str, Vec<&str>> {
    dbg!(&source);
    let (source, sections) = many1(section)(source)?;
    Ok((source, sections))
}

fn section(source: &str) -> IResult<&str, &str> {
    dbg!(&source);
    let (source, section) = multispace0(source)?;
    Ok((source, section))
}

If you add something like this below the multispace line, the output shows two dashes and returns the rest of the content.

rust

let (source, section) = tag("-")(source)?;

The many1 nom Parser Panics With multispace0 in Rust

Footnotes And References