Sections must have a style

[dmail00]

Describe the bug
Sections must have a style otherwise style is take from the previous(current) font style.

Minimal code

from fpdf import FPDF, TitleStyle

def test_headings():
    # fonts.py line:55 will set emphasis to None
    # fpdf.py line: 4870 will use the previous style as emphasis is None
    pdf = FPDF()
    pdf.add_page()
    pdf.set_font("Helvetica", "B")  # this is the font style that will be used
    level0 = TitleStyle("Helvetica", "", 20, (0, 0, 0))  # empty string or None does not matter
    pdf.set_section_title_styles(level0)
    pdf.start_section("foo")
    pdf.output("test_headings.pdf")


if __name__ == "__main__":
    test_headings()

Environment
Please provide the following information:

• Operating System: Windows
• Python version: 3.11.3
• fpdf2 version used: 2.7.7

[Lucas-C]

Thank you for the report @dmail00

I opened #1078 to fix this.

[Lucas-C]

The fix has been merged into the master branch of this repo, but not released yet.

You can install this unreleased latest version this way, if you want to test that this fix solves your initial problem:

pip install git+https://github.com/py-pdf/fpdf2.git@master