[Bug]: svg backend does not use configured generic family lists #23492
Description
Bug summary
The FontProperties family parameter can be a generic family such as sans-serif and the actual font should be looked up in rcParams according to the documentation.
Code for reproduction
>>> import matplotlib as mpl
>>> import matplotlib.font_manager as fm
>>> mpl.rcParams["font.family"]
['sans-serif']
>>> mpl.rcParams["font.sans-serif"]
['DejaVu Sans',
'Bitstream Vera Sans',
'Computer Modern Sans Serif',
'Lucida Grande',
'Verdana',
'Geneva',
'Lucid',
'Arial',
'Helvetica',
'Avant Garde',
'sans-serif']
>>> fp = fm.FontProperties()
<matplotlib.font_manager.FontProperties at ...>
>>> fp.get_family()
['sans-serif']Actual outcome
>>> fp.get_family()
['sans-serif']Expected outcome
>>> fp.get_family()
['DejaVu Sans',
'Bitstream Vera Sans',
'Computer Modern Sans Serif',
'Lucida Grande',
'Verdana',
'Geneva',
'Lucid',
'Arial',
'Helvetica',
'Avant Garde',
'sans-serif']Additional information
No response
Operating system
Windows
Matplotlib Version
3.5.2
Matplotlib Backend
TkAgg
Python version
3.9.13
Jupyter version
N/A
Installation
pip