Incorrect `sourcepos` for a html comment of `HtmlBlock`

[akiomik]

• expected: 1:1-1:21
• actual: 1:1-0:0

source:

let text = "<!-- A html block -->";
let arena = Arena::new();
let ast = parse_document(&arena, text, &Options::default());
println!("{:?}", ast);

output:

Node {
  data: RefCell { value: Ast { value: Document, sourcepos: Sourcepos { start: LineColumn { line: 1, column: 1 }, end: LineColumn { line: 1, column: 21 } }, internal_offset: 0, content: "", open: false, last_line_blank: false, table_visited: false, line_offsets: [] } },
  children: [
    Node {
      data: RefCell { value: Ast { value: HtmlBlock(NodeHtmlBlock { block_type: 2, literal: "<!-- A html block -->\n" }), sourcepos: Sourcepos { start: LineColumn { line: 1, column: 1 }, end: LineColumn { line: 0, column: 0 } }, internal_offset: 0, content: "", open: false, last_line_blank: false, table_visited: false, line_offsets: [0] } },
      children: []
    }
  ]
}

environment:

• rustc 1.83.0 (90b35a623 2024-11-26)
• comrak 0.31.0

[akiomik]

<pre> (block_type: 1) may have the same issue.

source:

let text = "<pre>foo</pre>";
let arena = Arena::new();
let ast = parse_document(&arena, text, &Options::default());
println!("{:#?}", ast);

output:

Node {
    data: RefCell {
        value: Ast {
            value: Document,
            sourcepos: Sourcepos {
                start: LineColumn {
                    line: 1,
                    column: 1,
                },
                end: LineColumn {
                    line: 1,
                    column: 14,
                },
            },
            internal_offset: 0,
            content: "",
            open: false,
            last_line_blank: false,
            table_visited: false,
            line_offsets: [],
        },
    },
    children: [
        Node {
            data: RefCell {
                value: Ast {
                    value: HtmlBlock(
                        NodeHtmlBlock {
                            block_type: 1,
                            literal: "<pre>foo</pre>\n",
                        },
                    ),
                    sourcepos: Sourcepos {
                        start: LineColumn {
                            line: 1,
                            column: 1,
                        },
                        end: LineColumn {
                            line: 0,
                            column: 0,
                        },
                    },
                    internal_offset: 0,
                    content: "",
                    open: false,
                    last_line_blank: false,
                    table_visited: false,
                    line_offsets: [
                        0,
                    ],
                },
            },
            children: [],
        },
    ],
}