Bug summary

All's in the title (and the examples).

Code for reproduction

from pylab import *
figtext(.5, .6, r"$\mathdefault{a-b}$", math_fontfamily="dejavusans")
figtext(.5, .5, r"$\mathdefault{a-b}$", math_fontfamily="cm")

Actual outcome

Both lines use the text default font of DejaVu Sans, but setting math_fontfamily to cm prevented replacement of minus by unicode minus.

Expected outcome

Unicode minus in both cases

Additional information

(I probably have a fix that'll come after tearing down most mathtext deprecations that expire in 3.6, namely getting rid of the math kwarg in the various font classes and instead make the minus->unicode_minus replacement earlier, during the parsing stage.)

Operating system

linux

Matplotlib Version

3.5

Matplotlib Backend

qt5agg

Python version

39

Jupyter version

ENOSUCHLIB

Installation

No response