Simple math markup using straight asciidoctor

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Simple math markup using straight asciidoctor

oddhack
Has anyone written an asciidoctor extension that would do something like change the style of words in a span with a specified user style, while leaving numbers in that span unchanged? The hope is to reproduce conventions for displaying math, where words are italicized but numbers are not, without actually including all the intrusive underscores required to make that happen. So we could write something like

[eq]#M~h~ = [-1, 0, 1]#

and get the M and h in italics, the array in roman.

N.b. MathJax / KaTeX are great - until you have hundreds of equations in a document, and loading turns into a 45 second process.

Jon