Katex: Mhchem not loaded on katex.org

[danielhollas]

Hi!

I tried to enable mhchem extension that shipped in the new 0.10.1 version on my site. It seems to work although some rendering seems a bit odd (will make another issue for that) so I wanted compare with katex.org test page. It seems that mhchem is not loaded there. I realize that might be by design since mhchem is an extension, but maybe in this case it is worth it to add?

[ylemkimon]

For now, you can load the extension by running javascript:var a=document.createElement('script');a.src='https://cdn.jsdelivr.net/npm/[email protected]/dist/contrib/mhchem.min.js';document.body.appendChild(a) in the developer console or the address bar (please note that some browsers like Chrome strips off javascript: when pasting to the address bar).

[edemaine]

Nice workaround @ylemkimon.

I think including the mhchem extension in the online demo is a good idea -- show off all our features -- and should be easy to do (just another <script> tag, as above).

In the same spirit, we could also consider including the copy-tex extension -- though that's more useful when there's a mix of inline math and formulas.

[kevinbarabash]

It seems like there shouldn't be too much work to add it the demo page.

[mothas]

@kevinbarabash I was looking for a 'good first issue'. If I have understood this issue right, the changes required for this fix isn't on the repo, but on the website katex.org, right?

[edemaine]

@mothas The website is on (or published from) the repo, in the website directory (built via Docusaurus -- run yarn and yarn start in that directory to run a test server, after yarn building in the root directory).

[mothas]

I have made a PR #1932 for this issue. Let me know if it looks good.

This is my first time contributing to a project. So apologies in advance in case I missed anything.

[danielhollas]

Hmm, to do this properly, don't you also need to update the release script to support versioning?

[edemaine]

@danielhollas I think our update-sri.js script already handles this, but I've asked for confirmation. Discussion about this should take place on the PR itself, #1932.