Ignore md separators.

src/main.rs

@@ -1,7 +1,7 @@
-use std::{env::args, fs};
+use std::{env, fs};
 
 fn main() {
-	let file = args().nth(1).expect("Usage : boxon <file>");
+	let file = env::args().nth(1).expect("Usage : boxon <file>");
 	let content = fs::read_to_string(&file).unwrap_or_else(|_| panic!("Could not read file '{file}'."));
 	let mut grid = Grid::from(content);
     let count = grid.fix();
@@ -34,6 +34,9 @@ impl Grid {
 		let mut result = 0;
 		let copy = self.clone();
 		for (y, line) in self.0.iter_mut().enumerate() {
+            if line == &vec!['-', '-', '-'] {
+                continue;
+            }
 			for (x, character) in line.iter_mut().enumerate() {
 				if let Some(cross) = copy.cross_at(x as i32, y as i32) {
 					let new_char = match cross {
@@ -207,6 +210,8 @@ fn connects(c: char) -> Cross {
 const F_: bool = false;
 const MM: bool = true;
 type Empt = ();
+
+#[repr(Rust, packed)]
 struct Cross(
 	(Empt, bool, Empt), //
 	(bool, bool, bool), //

test/out.txt

@@ -17,3 +17,7 @@ this is a normalized data table diagram.
   │ 1│     bob│ 19│
   │ 2│ charlie│ 23│
   └──┴────────┴───┘
+
+---
+
+Fin.

test/run

@@ -0,0 +1,7 @@
+#!/usr/bin/bash
+set -e
+cd "$(dirname "$(realpath "$0")")"
+cp source.txt out.txt
+
+cd ..
+cargo run -- test/out.txt

test/source.txt

@@ -18,4 +18,6 @@ this is a normalized data table diagram.
   | 2| charlie| 23|
   +--+--------+---+
 
+---
 
+Fin.