Matplotlib/v-3.4.2 问题与 matplotlibrc 中的乳胶序言

Question

I have matplotlibrc file which contains following for latex preamble

text.latex.preamble : \usepackage{siunitx}, \usepackage{amsmath}, \boldmath

This definition used to work with matplotlib/v-3.03, but when I updated to version-3.4.2, it stopped working. I checked the cached tex file that matplotlib created, I found that in version-3.4.2 it can not split preamble properly. I am showing respectively lines from tex file bellow

Version-3.0.3

\usepackage{siunitx}
\usepackage{amsmath}
\boldmath

Version-3.4.2

\usepackage{siunitx}, \usepackage{amsmath}, \boldmath

Can someone help me, the right way to define the preamble in matplotlibrc file for new version? I know they have changed how to handle preamble but could not figure it out.

Thanks

Answer 1

正如@samcarter_is_at_topanswers.xyz 所建议的，如果我从序言中删除逗号，则它适用于旧版本和新版本。