Bug report

The bundled fontcmr10 (and it's associated family) do not contain the underscore character. Instead, the unicode character for the underscore (according tothis website anyways) is actually mappted to the overdot.

Seethis StackOverflow for details, but I'll repeat here.

Code for reproduction

importmatplotlib.pyplotaspltplt.rcParams.update({'font.family':'serif','font.serif':'cmr10',})variable=range(5)plt.plot(variable,variable,label='test_underscore')plt.plot(variable,variable,label='escape\_underscore')plt.plot(variable,variable,label=r'rawtest_underscore')plt.plot(variable,variable,label=r'rawescape\_underscore')_=plt.legend()

Actual outcome

Expected outcome

Matplotlib version

• Operating system: Manjaro 19.0.2
• Matplotlib version: 3.1.3
• Matplotlib backend (print(matplotlib.get_backend())): module://ipykernel.pylab.backend_inline
• Python version: 3.7.6

Other
cmr10 loaded into FontForge shows that:
A) the underscore character doesn't exist
B) the normal underscore character (005f) is replaced by the overdot