HTML table with null text in span cells that don't show correctly

[whoisltd]

Describe the bug:

the HTML table with null text in span cells that don't show correctly
HTML table with td tag have rowspan, colspan > 1 and text inside is null the pdf output not show table correctly

HTML input:

<table border="1">
    <tr>
        <td rowspan=2></td>
        <td>cell 2</td>
        <td>cell 3</td>
    </tr>
    <tr>
        <td>cell 4</td>
        <td>cell 5</td>
    </tr>
    <tr>
        <td colspan=2></td>
        <td>cell 7</td>
    </tr>
</table>

Expect output:

Actual ouput:

Error details
the HTML table with null text in span cells that don't show correctly

Minimal code

from fpdf import FPDF

pdf = FPDF()
pdf.add_page()
pdf.write_html(
    """<table border="1">
    <tr>
        <td rowspan=2></td>
        <td>cell 2</td>
        <td>cell 3</td>
    </tr>
    <tr>
        <td>cell 4</td>
        <td>cell 5</td>
    </tr>
    <tr>
        <td colspan=2></td>
        <td>cell 7</td>
    </tr>
</table>
    """,
    table_line_separators=True,
)
pdf.output("output.pdf")

Environment
Please provide the following information:

• Operating System: Ubuntu 24.04
• Python version: 3.8.16
• fpdf2 version used: 2.8.1

[Lucas-C]

Thank you for the report @whoisltd 👍

@allcontributors please add @whoisltd for bug and code

[allcontributors]

@Lucas-C

I've put up a pull request to add @whoisltd! 🎉

[Lucas-C]

This fixup has been included in the new release published today:
https://github.com/py-pdf/fpdf2/releases/tag/2.8.2