Is there an easy way to get MathJax to give me \llbracket and \rrbracket?

Pandoc without MathJax supports them as〚 and 〛. When I add the --mathjax flag they disappear.

I am not the first to want this: github.com/mathjax/MathJax/iss

@twsh you could try just using the unicode characters. They won't stretch, though

@christianp Unfortunately, Beamer output complains if I do that. I could replace the macro with the character as part of my make rule for HTML output. But that seems excessive compared to just using [[.

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