Codecov Report

❌ Patch coverage is 93.33333% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.98%. Comparing base (176552a) to head (7a3aee7).
⚠️ Report is 99 commits behind head on main.

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I noticed issue #3038 (citing #3184) mentioned maintainer @edemaine recommends using the macro system to implement derivatives instead of the genfrac function.

Therefore, I (author of this PR) re-implemented the feature with a new PR #3703 🙂.

@Leedehai Thank you for the pull request. I have some questions.

1. MathJax has a physics extension that implements part of the LaTeX physics package. In the MathJax extension, some of the functions have behavior that does not quite match the LaTeX function. It appears that the MathJax behavior is simplified so that it can be expressed in MathJax macros. I'm guessing that you avoided using a macro for this PR because the current KaTeX macro language cannot fully express the functionality of the LaTeX commands. Is my assumption correct?

2. PR feat: add basic \odv and \pdv #3273 also takes a macro approach. Is this PR closer to LaTeX behavior than PR feat: add basic \odv and \pdv #3273?

3. If PR feat(macro): add basic conditional support #3385 was approved and merged, could you then use macros to fully implement \odv and \pdv?

Hi @ronkok thanks for your response! To answer your questions:

1. KaTeX's macro system is powerful enough to implement derivative macros. Please see my PR feat: Add derivatives, incl. high-order and mixed partial, using macros #3703 as mentioned in the comment above. It has the same feature as the current PR.
2. This PR and PR 3703 covers more ground than PR 3273 you mentioned, as my PRs support high-order & mixed-order derivatives. Please refer to the screenshots in either the current PR 3701 or my PR 3703 (both PRs of mine have the same feature and you may merge either one).
3. Not necessary to wait for that PR; as mentioned, the existing macro system is able enough.

Thanks!