raw string formatter is broken

[1e1001]

use kdl::{KdlDocument, KdlEntry, KdlNode, KdlValue};
use std::str::FromStr;
fn main() {
  let mut node = KdlNode::new("what");
  node.entries_mut().push(KdlEntry::new(KdlValue::RawString(
    "\"#\nkdl-injection \"no way!!\"//".into(),
  )));
  let mut doc = KdlDocument::new();
  doc.nodes_mut().push(node);
  println!("{doc}");
  println!(
    "{} ≠ {} ‽",
    doc.nodes().len(),
    // unparse and parse the document
    KdlDocument::from_str(&doc.to_string())
      .unwrap()
      .nodes()
      .len()
  );
}

outputs

what r#""#
kdl-injection "no way!!"//"#

1 ≠ 2 ‽

this is because the implementation of write_raw_string checks for sequences of /#{n}"/ instead of /"#{n}/

i'd suggest replacing the for loop with something like

for char in raw.chars() {
    if char == '"' {
        consecutive = 1;
    } else if char == '#' && consecutive > 0 {
        consecutive += 1;
    } else {
        consecutive = 0;
    }
    maxhash = maxhash.max(consecutive);
}