Bug summary

The plot shorthand format spec does not work when combining a Cn color with n>=10 with a linestyle or a markerstyle, e.g. ".C10". Somewhat inconsistently, it does work when a Cn color is given by itself.

Code for reproduction

from pylab import *; plot([0, 1], ".C10") 
# plot([0, 1], "C10") works; note that this also goes through the shorthand route
# unlike plot([0, 1], c="C10")

Actual outcome

ValueError: '.C10' is not a valid format string (unrecognized character '0')

Expected outcome

No error.

Additional information

No response

Operating system

macos

Matplotlib Version

3.9.0.dev1178+g88d64e5f0c

Matplotlib Backend

any

Python version

3.12

Jupyter version

none

Installation

git checkout