Vishal Pankaj Chandratreya

Thanks a lot for the patient and detailed analysis! I think I miscalculated the font constant updates for CM. Further, I hadn't changed `delta` to account for the changed x-height...

> Also, note that the kerns before the "c" are actually different in the two supposedly identical examples (is that a bug?) The space before 'c' is `\,`, which is...

PR cleanliness failed. If these changes are acceptable, I will squash the commits.

Probably a result of the difference between `{something}` and `something`, as discussed in https://github.com/matplotlib/matplotlib/issues/23257. I'll try to figure it out.

This time, I double-checked that `x^2_y` and `x_y^2` are rendered identically, as are `xyz^kx_kx^py^{p-2} d_i^jb_jc_kd x^j_i E^0 E^0_u` and `{xyz}^k{x}_{k}{x}^{p}{y}^{p-2} {d}_{i}^{j}{b}_{j}{c}_{k}{d} {x}^{j}_{i}{E}^{0}{E}^0_u`. Another thing is that `{a}_{0}+\dfrac{1}{{a}_{1}+\dfrac{1}{{a}_{2}+\dfrac{1}{{a}_{3}+\dfrac{1}{{a}_{4}}}}}` gets cut off...

Colour and size don't appear to change when the corresponding parameters are changed after creating the figure. Only the weight. And if one displays the figure instead of saving it,...

Along with `python-debian`, the warning message is shown for `gpg`, too. On my system, updating it required the installation of some additional packages. Documenting here for anyone who comes by....