Add support for a table without an extra new line before it

[dannyp32]

Fixes the following issue where a table will not be rendered if there isn't an extra line before the table.
#818

For example this will not render correctly

Here is the table:
| Key   | Value    |
| ----  | -------- |
| Color | Blue     |
| Size  | Medium   |

But this will because there's an extra new line before the table starts

Here is the table:

| Key   | Value    |
| ----  | -------- |
| Color | Blue     |
| Size  | Medium   |

Not handled in this change - whitespace between the new line and the pipe

[dannyp32]

@xoofx hoping you can take a look. Open to any suggestions

[xoofx]

Thanks for this. I will have to double check some stuffs but it could be enough.

[RickStrahl]

Checking in 0.42.0 - looks like this works for Grid Tables but not for Pipe Tables.

[MihaZupan]

Possibly an issue with how we're dealing with new lines in this change.
The PR added tests for a\r|... and a\n|... - if I change that to \r\n instead it fails.

[MihaZupan]

Looks like this change is also removing the content before the table

string md =
    """
    Some text
    | A |
    |---|
    | B |
    """.ReplaceLineEndings("\n");
    
var pipeline = new MarkdownPipelineBuilder()
    .UsePipeTables()
    .Build();

Console.WriteLine(Markdown.ToHtml(md, pipeline));

(note the missing "some text")

<table>
<thead>
<tr>
<th>A</th>
</tr>
</thead>
<tbody>
<tr>
<td>B</td>
</tr>
</tbody>
</table>

And it doesn't match the table if the text before it is more than one line (not sure if this was intentional).

[RickStrahl]

FWIW - I normalize my linefeeds to LF before sending to Markdig, so that's not the issue I'm seeing...

[MihaZupan]

I suspect that your case hit this

And it doesn't match the table if the text before it is more than one line (not sure if this was intentional).

Should be fixed with #905 to allow multiple lines of text to precede the table.